:Lake Tahoe

The name for Lake Tahoe derives from the Washo word for the lake, {{Lang|was|dáʔaw}}, meaning 'the lake.'{{Cite web|title = Lake Tahoe Basin Mgt Unit – History & Culture|url = http://www.fs.usda.gov/detail/ltbmu/learning/history-culture/?cid=fsm9_046620|website = www.fs.usda.gov|access-date = January 15, 2016}} Even though {{Lang|was|dáʔaw}} is used in the names of other lakes with modifiers (for example, {{Lang|was|áʔwaku dáʔaw}} for Pyramid Lake, meaning 'trout lake'), it often is used without a modifier to refer to Lake Tahoe. This may be because of Tahoe's importance to Washo culture.Natalie E. Davenport (2019). "Naming, Remembering, and Experiencing We’ lmelt’ iʔ [northern Washoe] Cultural Spaces in Wa she shu It Deh [Washoe Land]". ScholarWorks, University of Nevada, Reno. Accessed 1 Jan 2023. pp. 194, 329. https://scholarworks.unr.edu/bitstream/handle/11714/6780/Davenport_unr_0139D_13067.pdf

{{See also|List of Lake Tahoe peaks|Lake Tahoe-Nevada State Park}}

Lake Tahoe is the second deepest lake in the U.S., with a maximum depth of {{convert|1645|ft}}, trailing Oregon's Crater Lake at {{convert|1949|ft|abbr=on}}.{{cite web|url=https://www.nps.gov/crla/planyourvisit/upload/World-s-Deepest-Lakes-2017-508.pdf|title=The World's Deepest Lakes|publisher=US Department of the Interior: National Park Service|access-date=October 31, 2008}} Tahoe is the 17th{{cite web |url= http://geology.com/records/deepest-lake.shtml |title=Deepest Lake in the World Deepest Lake in the United States |access-date=October 31, 2008 |publisher=Geology.com }} deepest lake in the world, and the sixth deepest in average depth. It is about {{convert|22|mi|abbr=on}} long and {{convert|12|mi|km|abbr=on}} wide and has {{convert|72|mi|abbr=on}} of shoreline and a surface area of {{convert|191|sqmi|km2}}. The lake is so large that its surface is noticeably convex due to the curvature of the Earth.{{Cite web |last=Peterson |first=Dave |date=2020-09-25 |title=How Much Does the Earth Curve? |url=https://www.themathdoctors.org/how-much-does-the-earth-curve/ |access-date=2023-07-15 |website=The Math Doctors |language=en-US}} At lake level the opposing shorelines are below the horizon at its widest parts; by nearly {{convert|100|ft|m}} at its maximum width, and by some {{convert|320|ft|m}} along its length.{{cite web |title=Distance to the Horizon Calculator |url=http://www.ringbell.co.uk/info/hdist.htm |access-date=June 22, 2018}}{{cite web |last1=Senesac |first1=David |title=Visual Line of Sight Calculations dependent on Earth's Curvature |url=http://www.davidsenesac.com/Information/line_of_sight.html |access-date=June 22, 2018}} Visibility may vary somewhat with atmospheric refraction;{{cite web |last1=Young |first1=Andrew T. |title=Looming, Towering, Stooping, and Sinking |url=https://aty.sdsu.edu/mirages/mirsims/loom/loom.html |website=An Introduction to Green Flashes |publisher=San Diego State University |access-date=July 10, 2018}} when the air temperature is much greater than the lake temperature, looming may occur where the lake surface or opposing shoreline is lifted above the horizon. Fata Morgana may be responsible for Tahoe Tessie sightings.

File:North Lake Tahoe Aerial photo Don Ramey Logan.jpg

Approximately two-thirds of the shoreline is in California.{{cite press release |url=http://www.bluelaketahoe.com/media/release.php?p=p_display&l=2&t=1&id=128 |archive-url=https://web.archive.org/web/20090222021159/http://www.bluelaketahoe.com/media/release.php?p=p_display&l=2&t=1&id=128 |archive-date=February 22, 2009 |title=Lake Tahoe Trivia |access-date=October 26, 2008 |publisher=Lake Tahoe Visitors Authority |date=June 10, 2005 }} The south shore is dominated by the lake's largest city, South Lake Tahoe, California, which adjoins the town of Stateline, Nevada, while Tahoe City, California, is located on the lake's northwest shore. Kings Beach, California, and Incline Village, Nevada, anchor the lake's north shore.{{clarify|what does anchor the north shore mean?|date=January 2023}} Although highways run within sight of the lake shore for much of Tahoe's perimeter, many important{{clarify|in what way are these parts of the shoreline important?|date=January 2023}} parts of the shoreline lie within state parks or are protected by the United States Forest Service. The Lake Tahoe Watershed (USGS Huc 18100200) of {{convert|505|sqmi|km2|abbr=on}} is the land area that drains to the lake and the Lake Tahoe drainage divide traverses the same general area as the Tahoe Rim Trail.

File:Lake Tahoe, view of California from Nevada side.jpg

Lake Tahoe is fed by 63 tributaries. These drain an area about the same size as the lake and produce half its water; the other half is produced by direct precipitation.

File:Sunrise over lake Tahoe.jpg

File:Emerald Bay Oct 2023.jpg

The Truckee River is the lake's only outlet, flowing northeast through Reno, Nevada, into Pyramid Lake which has no outlet. It accounts for one third of the water that leaves the lake, the rest evaporating from the lake's surface. Evaporation is thought to account for 40 to 60 percent of the water usage.Friedrich, Katja, et al. "Reservoir Evaporation in the Western United States: Current Science, Challenges, and Future Needs." Bulletin of the American Meteorological Society, vol. 99, no. 1, 2018, p. 169. [https://www.jstor.org/stable/26639320 JSTOR website] Retrieved 5 June 2023. The flow of the Truckee River and the height of the lake are controlled by Lake Tahoe Dam at the outlet. The natural rim is at {{convert|6223|ft|abbr=on}} above sea level. The maximum legal limit to which the lake can be allowed to rise in order to store water is at {{convert|6,229.1|ft|abbr=on}}; a spillway at the dam controls overflow.{{cite web| url= http://waterdata.usgs.gov/usa/nwis/uv?site_no=10337000 |title=USGS – National Water Information System |access-date=April 14, 2016}} Around New Year 1996/1997 a Pineapple Express atmospheric river melted snow and caused the lake and river to overflow, inundating Reno and surrounding areas.{{cite web|url= http://tahoequarterly.com/Features/Story/a-new-years-deluge |first=Matthew |last=Renda |title=A New Year's Deluge|date= December 2016 |access-date= December 22, 2016}}

The Lake Tahoe Basin was formed by vertical motion (normal) faulting. Uplifted blocks created the Carson Range on the east and the main Sierra Nevada crest on the west. Down-dropping and block tilting (half-grabens) created the Lake Tahoe Basin in between. This kind of faulting is characteristic of the geology of the adjoining Great Basin to the east.

Lake Tahoe is the youngest of several extensional basins of the Walker Lane deformation zone that accommodates nearly {{cvt|12|mm|order=flip|}} per year of dextral shear between the Sierra Nevada-Great Valley Block and the North America plate.{{cite journal|last1=Oldow|first1=J.S.|first2=C.L.V.|last2=Aiken|title=Active displacement transfer and differential block motion within the central Walker Lane, western Great Basin |journal=Geology |date=January 2001 |volume=29 |pages=19–22|doi=10.1130/0091-7613(2001)029<0019:ADTADB>2.0.CO;2 |issue=1|issn=0091-7613|bibcode = 2001Geo....29...19O |last3=Hare|first3=J. L.|last4=Ferguson|first4=J. F.|last5=Hardyman|first5=R. F.}}{{cite journal |last1=Unruh |first1=Jeffrey |first2=James|last2=Humphrey|title=Transtensional model for the Sierra Nevada frontal fault system, eastern California |journal=Geology |date=April 2003 |volume=31 |pages=327–30 |doi=10.1130/0091-7613(2003)031<0327:TMFTSN>2.0.CO;2 |issue=4 |issn=0091-7613|bibcode = 2003Geo....31..327U |last3=Barron |first3=Andrew }}

File:Tunnel Creek Road, Lake Tahoe, Nevada, 20220904, 02.jpg

Three principal faults form the Lake Tahoe basin: the West Tahoe Fault, aligned between Meyers and Tahoe City, and which is the local segment of the Sierra Nevada Fault, extending on shore north and south of these localities;{{cite news|title=New tool to dig up fresh quake clues|first=David|last=Perlman|newspaper=San Francisco Chronicle|date=September 3, 2012}} the Stateline/North Tahoe Fault, starting in the middle of the lake and creating the relief that forms Stateline, NV; and the Incline Village Fault, which runs parallel to the Stateline/North Tahoe Fault offshore and into Incline Village.{{cite web|url=https://earthquake.usgs.gov/earthquakes/recenteqscanv/FaultMaps/120-39.html |archive-url=https://web.archive.org/web/20110607125612/http://earthquake.usgs.gov/earthquakes/recenteqscanv/FaultMaps/120-39.html |archive-date=June 7, 2011 |publisher=USGS |title=California-Nevada Fault Map centered at 39°N,120°W |access-date=September 18, 2012 |url-status=dead }} The West Tahoe Fault appears to be the most active and potentially hazardous fault in the basin. A study in Fallen Leaf Lake, just south of Lake Tahoe, used seafloor mapping techniques to image evidence for paleoearthquakes on the West Tahoe and revealed the last earthquake occurred between 4,100 and 4,500 years ago.{{cite journal|last1=Brothers|first1=D.S.|first2=G.M.|last2=Kent|title=New Constraints on Deformation, Slip Rate, and Timing of the Most Recent Earthquake on the West Tahoe-Dollar Point Fault, Lake Tahoe Basin, California |journal=Bulletin of the Seismological Society of America |date=April 2009 |volume=99|doi=10.1785/0120080135|pages=499–519|issue=2a|bibcode = 2009BuSSA..99..499B |last3=Driscoll|first3=N. W.|last4=Smith|first4=S. B.|last5=Karlin|first5=R.|last6=Dingler|first6=J. A.|last7=Harding|first7=A. J.|last8=Seitz|first8=G. G.|last9=Babcock|first9=J. M.|display-authors=4}} Subsequent studies revealed submarine landslides in Fallen Leaf Lake and Lake Tahoe that are thought to have been triggered by earthquakes on the West Tahoe fault and the timing of these events suggests a recurrence interval of 3,000–4,000 years.{{Cite journal|title = Paleoseismic history of the Fallen Leaf segment of the West Tahoe-Dollar Point fault reconstructed from slide deposits in the Lake Tahoe Basin, California-Nevada|journal = Geosphere|last1=Maloney|first1=J.M.|first2=P.J.|last2=Noble|first3=N.W.|last3=Driscoll|first4=G.M.|last4=Kent|first5=S.B.|last5=Smith|first6=G.C.|last6=Schmauder|first7=J.M.|last7=Babcock|first8=R.L.|last8=Baskin|first9=R.|last9=Karlin|first10=A.M.|last10=Kell|first11=G.G.|last11=Seitz|first12=S.|last12=Zimmerman|first13=J.A.|last13=Kleppe|display-authors=4|doi = 10.1130/GES00877.1|issue = 4|pages = 1065–90|volume = 9|year = 2013|bibcode = 2013Geosp...9.1065M|doi-access=free}}

Some of the highest peaks of the Lake Tahoe Basin that formed during the process of Lake Tahoe creation are Freel Peak at {{convert|10891|ft|m|0}}, Monument Peak at {{convert|10067|ft|m|0}}, Pyramid Peak at {{convert|9984|ft|m|0}} (in the Desolation Wilderness), and Mount Tallac at {{convert|9735|ft|m|0}}. The north shore boasts three peaks at over {{convert|10,000|ft|sigfig=4}}: Mount Rose at {{convert|10,785|ft|m|0}}, Mount Houghton at {{convert|10,490|ft|m|0}} and Relay Peak at {{convert|10,388|ft|m|0}}. Mt. Rose is a very popular hiking and backcountry skiing destination.

Eruptions from the now-extinct volcano Mount Pluto formed a volcanic dam on the north side. Melting snow filled the southern and lowest part of the basin to form the ancestral Lake Tahoe. Rain and runoff added additional water.{{cite web|url=http://www.fs.fed.us/r5/ltbmu/faqs/|archive-url=https://web.archive.org/web/20090510163228/http://www.fs.fed.us/r5/ltbmu/faqs/|archive-date=May 10, 2009|title=Frequently Asked Questions about Lake Tahoe and the Basin|website=Lake Tahoe Basin Management Unit|publisher=Forest Service, U.S. Department of Agriculture|access-date=June 20, 2007}}

The Sierra Nevada adjacent to Lake Tahoe were carved by scouring glaciers during the Ice Ages, which began a million or more years ago, and retreated ~15,000 years ago at the end of the Pleistocene. The glaciers carved canyons that are today iconic landmarks such as Emerald Bay, Cascade Lake, and Fallen Leaf Lake, among others. Lake Tahoe itself never held glaciers, but instead water is retained by damming Miocene volcanic deposits.

Soils of the basin come primarily from andesitic volcanic rocks and granodiorite, with minor areas of metamorphic rock. Some of the valley bottoms and lower hill slopes are mantled with glacial moraines, or glacial outwash material derived from the parent rock. Sandy soils, rock outcrops and rubble and stony colluvium account for over 70% of the land area in the basin. The basin soils (in the < 2 mm fraction) are generally 65–85% sand (0.05–2.0 mm).

Given the great depth of Lake Tahoe, and the locations of the normal faults in the deepest portions of the lake, modeling suggests that earthquakes on these faults can trigger tsunamis. Wave heights of these tsunamis are predicted to be on the order of {{convert|10|to|33|ft|0|abbr=on}} in height, capable of traversing the lake in just a few minutes.{{cite journal |last=Ichinose |first=G.A.|author2=Anderson, J.G. |author3=Satake, K. |author4=Schweickert, R.A. |author5= Lahren, M.M. |title=The potential hazard from tsunami and seiche waves generated by large earthquakes within Lake Tahoe, California-Nevada|date=April 2000|journal=Geophysical Research Letters |volume=27 |pages=1203–06 |doi=10.1029/1999GL011119 |issue=8 |bibcode=2000GeoRL..27.1203I|s2cid=128945972|doi-access=free }} A massive collapse of the western edge of the basin that formed McKinney Bay around 50,000 years ago is thought to have generated a tsunami/seiche wave with a height approaching {{convert|330|ft|abbr=on}}.{{cite conference|last=Gardner|first=J.V.|title=The Lake Tahoe debris avalanche|conference=Geological Society of Australia|book-title=15th Annual Geological Conference |date=July 2000}}

Image:Fallen Leaf Lake and Lake Tahoe South Shore.jpg and Lake Tahoe in background from Angora Ridge Rd. to the Angora Lakes Resort]]

Lake Tahoe has a dry-summer continental climate (Dsb in the Köppen climate classification), featuring warm, dry summers and cold winters with heavy snowfall. Mean annual precipitation ranges from over {{convert|55|in|mm}} for watersheds on the west side of the basin to about {{convert|26|in|mm}} near the lake on the east side of the basin. Most of the precipitation falls as snow between November and April, although rainstorms combined with rapid snowmelt account for the largest floods. There is a pronounced annual runoff of snowmelt in late spring and early summer, the timing of which varies from year to year. In some years, summertime monsoon storms from the Great Basin bring intense rainfall, especially to high elevations on the northeast side of the basin.

August is normally the warmest month at the Lake Tahoe Airport (elevation {{convert|6254|ft|m|abbr=on|disp=semicolon}}) with an average maximum of {{convert|78.7|°F|°C|abbr=on}} and an average minimum of {{convert|39.8|°F|°C|abbr=on}}. January is the coolest month with an average maximum of {{convert|41.0|°F|°C|abbr=on}} and an average minimum of {{convert|15.1|°F|°C|abbr=on}}. The all-time maximum of {{convert|99|°F|°C|abbr=on}} was recorded on July 22, 1988. The all-time minimum of {{convert|-16|°F|°C|abbr=on}} was recorded on December 9, 1972. Temperatures exceed {{convert|90|°F|°C|abbr=on}} on an average of 2.0 days annually. Minimum temperatures of {{convert|32|°F|°C|abbr=on}} or lower occur on an average of 231.8 days annually, and minimum temperatures of {{convert|0|°F|°C|abbr=on}} or lower occur on an average of 7.6 days annually. Freezing temperatures have occurred in every month of the year.{{cite web

| title = Tahoe, California – Climate Summary

| publisher=Desert Research Institute

| url = http://www.wrcc.dri.edu/cgi-bin/cliMAIN.pl?ca8758

| access-date =October 31, 2008 }} (1903–2007 climate data)

{{cite web

| title = Climate Data – North Lahontan Hydrologic Region

| publisher = State of California, Department of Water Resources

| url = http://www.water.ca.gov/floodmgmt/hafoo/csc/climate_data/nlahontan.cfm

| access-date = October 31, 2008

| archive-date = December 19, 2017

| archive-url = https://web.archive.org/web/20171219120654/http://www.water.ca.gov/floodmgmt/hafoo/csc/climate_data/nlahontan.cfm

| url-status = dead

}} (30-year climate data)

{{Clear}}

{{Weather box

|location = Tahoe City, California (Elevation {{convert|6,230|ft|m|abbr=on|disp=semicolon}})

|single line = Y

|Jan record high F = 59

|Feb record high F = 60

|Mar record high F = 67

|Apr record high F = 74

|May record high F = 89

|Jun record high F = 90

|Jul record high F = 99

|Aug record high F = 94

|Sep record high F = 87

|Oct record high F = 80

|Nov record high F = 70

|Dec record high F = 60

|year record high F = 99

|Jan high F = 38.6

|Feb high F = 40.3

|Mar high F = 44.0

|Apr high F = 50.4

|May high F = 59.6

|Jun high F = 68.7

|Jul high F = 77.9

|Aug high F = 77.2

|Sep high F = 69.8

|Oct high F = 58.8

|Nov high F = 46.9

|Dec high F = 40.3

|year high F = 56.0

|Jan low F = 19.1

|Feb low F = 19.9

|Mar low F = 22.8

|Apr low F = 26.9

|May low F = 32.8

|Jun low F = 38.6

|Jul low F = 44.4

|Aug low F = 43.7

|Sep low F = 39.0

|Oct low F = 32.3

|Nov low F = 25.8

|Dec low F = 20.8

|year low F = 30.5

|Jan record low F = −14

|Feb record low F = −15

|Mar record low F = −6

|Apr record low F = 5

|May record low F = 9

|Jun record low F = 24

|Jul record low F = 22

|Aug record low F = 28

|Sep record low F = 21

|Oct record low F = 9

|Nov record low F = 1

|Dec record low F = −16

|year record low F = −16

|precipitation colour = green

|Jan precipitation inch = 5.97

|Feb precipitation inch = 5.29

|Mar precipitation inch = 4.12

|Apr precipitation inch = 2.14

|May precipitation inch = 1.20

|Jun precipitation inch = 0.65

|Jul precipitation inch = 0.26

|Aug precipitation inch = 0.30

|Sep precipitation inch = 0.59

|Oct precipitation inch = 1.82

|Nov precipitation inch = 3.57

|Dec precipitation inch = 5.55

|year precipitation inch = 31.47

|Jan snow inch = 45.9

|Feb snow inch = 36.5

|Mar snow inch = 35.2

|Apr snow inch = 15.9

|May snow inch = 3.7

|Jun snow inch = 0.2

|Jul snow inch = 0

|Aug snow inch = 0

|Sep snow inch = 0.3

|Oct snow inch = 2.4

|Nov snow inch = 15.5

|Dec snow inch = 35.2

|year snow inch = 190.7

|source 1 = The Western Regional Climate Center{{cite web

| url =http://www.wrcc.dri.edu/cgi-bin/cliMAIN.pl?ca8758| title =Seasonal Temperature and Precipitation Information | access-date =April 13, 2013 | publisher =Western Regional Climate Center }}

|date=April 2013

}}

{{main|Ecology of the Sierra Nevada}}Image:Sockeye salmon jumping over beaver dam Lake Aleknagik, AK Kristina Ramstad 1997.jpg (Oncorhynchus nerka) jumping a beaver dam |right]]

File:Broken beaver dam on Blackwood Creek June 2014.jpg dam on Blackwood Creek. Beaver dams are easily crossed by trout and their ponds may serve as critical breaks for wildfires.{{cite journal |title=Do Beaver Dams Impede the Movement of Trout? |author=Ryan L. Lokteff |author2=Brett B. Roper |author3=Joseph M. Wheaton |name-list-style=amp |date=2013 |journal=Transactions of the American Fisheries Society |volume=142 |issue=4 |pages=1114–25 |url=http://etal.usu.edu/Downloads/FactSheets/FactSheet_TempleForkLokteffFINAL_Flattened.pdf |access-date=June 17, 2014 |doi=10.1080/00028487.2013.797497|bibcode=2013TrAFS.142.1114L }}{{cite book |title=Three Against the Wilderness |author=Eric Collier |year=1959 |publisher=Touchwood |location=Victoria, British Columbia |page=288 |isbn= 978-1-894898-54-6 }}]]

Vegetation in the basin is dominated by a mixed conifer forest of jeffrey pine (Pinus jeffreyi), lodgepole pine (P. contorta), white fir (Abies concolor), red fir (A. magnifica), sugar pine (P. lambertiana), California incense-cedar (Calocedrus decurrens), ponderosa pine (P. ponderosa), and western white pine (P. monticola).{{cite web|url=http://www.northstarattahoe.com/info/ski/media/tahoe_environment.asp |archive-url=https://web.archive.org/web/20120119180552/http://www.northstarattahoe.com/info/ski/media/tahoe_environment.asp |archive-date=January 19, 2012 |title=Trees Indigenous to Lake Tahoe |access-date=October 31, 2008 |publisher=Northstar-at-Tahoe Resort |url-status=dead }} The basin also contains significant areas of wet meadows and riparian areas, dry meadows, brush fields (with Arctostaphylos and Ceanothus) and rock outcrop areas, especially at higher elevations. Ceanothus is capable of fixing nitrogen, but mountain alder (Alnus tenuifolia), which grows along many of the basin's streams, springs and seeps, fixes far greater quantities, and contributes measurably to nitrate-N concentrations in some small streams. The beaches of Lake Tahoe are the only known habitat for the rare Lake Tahoe yellowcress (Rorippa subumbellata), a plant which grows in the wet sand between low- and high-water marks.{{cite web |url=http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Rorippa+subumbellata |title=The Nature Conservancy: Rorippa subumbellata |website=Natureserve |access-date=November 15, 2011 |archive-date=August 17, 2005 |archive-url=https://web.archive.org/web/20050817024413/http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Rorippa+subumbellata |url-status=dead }} Vegetation in the lake itself formerly consisted of native Chara and Gomphoneis algae and coontail (Ceratophyllum demersum), but the later introduction of curlyleaf pondweed (Potamogeton crispus), Eurasian watermilfoil (Myriophyllum spicatum), and Zygnema and Cladophora algae has transformed the nearshore environment.{{Cite web|title=The Lake Tahoe Takeover |date= May 17, 2017|publisher= FISHBIO Fisheries Research, Monitoring, and Conservation|url=https://fishbio.com/field-notes/population-dynamics/lake-tahoe-takeover|access-date=July 17, 2020|language=en-US}}

Native fish of the lake include Lahontan cutthroat trout (Oncorhynchus clarki henshawi), mountain whitefish (Prosopiurm williamsoni), Lahontan speckled dace (Rhinichthys osculus robustus), Lahontan redside (Rhinichthys egregious), Lahontan Lake tui chub (Siphateles bicolor pectinifer), Tahoe sucker (Catostomus tahoensis), Lahontan mountain sucker (Catostomus platyrhynchus lahontan), and Paiute sculpin (Cottus beldingi). Most of these fish populations have been significantly reduced due to the introduction of nonnative fish, Asian clam (Corbicula fluminea), and mysid shrimp. Competition from introduced fish led cutthroat trout to be completely extirpated from the lake in the early 20th century until reintroduction efforts started in 2019.{{Cite web|title=Nevada Department of Wildlife|url=http://www.ndow.org/Bodies_Of_Water/Lake_Tahoe/|access-date=July 17, 2020|website=Ndow.org|archive-date=November 18, 2020|archive-url=https://web.archive.org/web/20201118135058/http://www.ndow.org/Bodies_Of_Water/Lake_Tahoe/|url-status=dead}}{{Cite web|date=May 28, 2020|title=More Than 4,600 Lahontan Cutthroat Trout Released into Native Lake Tahoe|url=https://activenorcal.com/more-than-4600-lahontan-cutthroat-trout-released-into-native-lake-tahoe/|access-date=July 17, 2020|website=Active NorCal|language=en-US}}

Introduced fish species include lake trout (Salvelinus namaycush), rainbow trout (Oncorhynchus mykiss gairdneri), sockeye salmon (Oncorhyncus nerka), brown trout (Salmo trutta), brook trout (Salvelinus fontinalis), common carp (Cyprinus carpio), golden shiner (Notemigonus crysoleucas), western mosquitofish (Gambusia affinis), bluegill (Lepomis macrochirus), black (Pomoxis nigromaculatus) and white (P. annularis) crappie, largemouth (Micropterus salmoides) and smallmouth (Micropterus dolomieu) bass, and brown bullhead (Ameiurus nebulosus). Each autumn, from late September through mid-October, mature sockeye salmon transform from silver-blue color to a fiery vermilion, and run up Taylor Creek, near South Lake Tahoe. As spawning season approaches the fish acquire a humpback and protuberant jaw. After spawning they die and their carcasses provide a feast for gatherings of mink (Neogale vison), bears (Ursus americanus), and bald eagles (Haliaeetus leucocephalus). The non-native salmon were transplanted from the North Pacific to Lake Tahoe in 1944.{{cite journal |title=Tahoe's drama of the kokanee |author=Marcia Williamson |journal=Sunset Magazine |date=Oct 1992 |url=https://www.questia.com/read/1G1-12884197 |access-date=May 8, 2010 }}

North American beaver (Castor canadensis) were re-introduced to the Tahoe Basin by the California Department of Fish and Wildlife and the U.S. Forest Service between 1934 and 1949. Descended from no more than nine individuals, 1987 beaver populations on the upper and lower Truckee River had reached a density of 0.72 colonies (3.5 beavers) per kilometer.{{cite journal|title=Beaver Distribution in the Truckee River Basin, California |last1=Beier|first1=P|last2=Barrett|first2=RH |journal=California Fish and Game |year=1989 |url=http://oak.ucc.nau.edu/pb1/vitae/Beier-Barrett.1987.CDFG_Beaver.pdf |access-date=January 17, 2010 |url-status=dead |archive-url=https://web.archive.org/web/20110720012004/http://oak.ucc.nau.edu/pb1/vitae/Beier-Barrett.1987.CDFG_Beaver.pdf |archive-date=July 20, 2011 }} At the present time beaver have been seen in Tahoe Keys, Taylor Creek, Meeks Creek at Meeks Bay on the western shore, and Kings Beach on the north shore, so the descendants of the original nine beavers have apparently migrated around most of Lake Tahoe.{{cite web |title=The Beavers of the Truckee River |publisher=Tahoe Arts and Mountain Culture |url=http://www.tahoeculture.com/green-tahoe/eco-tips/the-beavers-of-the-truckee-river-going-to-town/ |date=July 20, 2009 |access-date=August 16, 2010 |archive-url=https://web.archive.org/web/20110609011329/http://www.tahoeculture.com/green-tahoe/eco-tips/the-beavers-of-the-truckee-river-going-to-town/ |archive-date=June 9, 2011 |url-status=dead }}{{cite news|title=This is Wildlife Management in the 21st century? |author=Keaven Van Lom |publisher=Moonshine Ink |date=January 16, 2010 |url=http://moonshineink.com/articles.php/70/1618 |archive-url=https://web.archive.org/web/20120303135432/http://moonshineink.com/articles.php/70/1618 |archive-date=March 3, 2012 |access-date=August 16, 2010 |url-status=dead }} Recently novel physical evidence has demonstrated that beaver were native to the Sierra until at least the mid-nineteenth century, via radiocarbon dating of buried beaver dam wood uncovered by deep channel incision in the Feather River watershed.{{cite journal |title=Novel physical evidence that beaver historically were native to the Sierra Nevada |author=James, C. D. |author2=Lanman, R. B. |journal=California Fish and Game |date=Spring 2012 |volume=98 |number=2 |pages=129–32 |url=https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=67452&inline=1 |access-date=June 17, 2014 }} That report was supported by a summary of indirect evidence of beaver including reliable observer accounts of beaver in multiple watersheds from the northern to the southern Sierra Nevada, including its eastern slope.{{cite journal |title=The historical range of beaver in the Sierra Nevada: a review of the evidence |author=R. B. Lanman |author2=H. Perryman |author3=B. Dolman|author4=Charles D. James |journal=California Fish and Game |date=Spring 2012 |volume=98 |number=2 |pages=65–80 |url=https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=67444&inline=1 |access-date=June 17, 2014}} A specific documented record of beaver living historically in Lake Tahoe's North Canyon Creek watershed above Glenbrook includes a description of Spooner Meadow rancher Charles Fulstone hiring a caretaker to control the beaver population in the early 20th century.{{cite report|title=North Canyon Creek Restoration Project: Phase I Final Report|author1=((2ndNature))|author2=((Huffman & Carpenter, Inc.))|name-list-style=amp|publisher=U.S. Army Corps of Engineers Sacramento District|date=April 2010|url=http://www.2ndnaturellc.com/wp-content/uploads/2011/12/NCC_Final.pdf|access-date=September 6, 2016|archive-date=October 11, 2016|archive-url=https://web.archive.org/web/20161011073300/http://www.2ndnaturellc.com/wp-content/uploads/2011/12/NCC_Final.pdf|url-status=dead}} A recent study of Taylor Creek showed that beaver dam removal decreased wetland habitat, increased stream flow, and increased total phosphorus pollutants entering Lake Tahoe – all factors which negatively impact the clarity of the lake's water.{{cite thesis |title=The Effect of Beaver (Castor canadensis) Dam Removal on Total Phosphorus Concentration in Taylor Creek and Wetland, South Lake Tahoe, California |author=Sarah Muskopf |publisher=Humboldt State University, Natural Resources |date=October 2007 |hdl=2148/264 }} In addition, beaver dams located in Ward Creek, located on the west shore of Lake Tahoe, were also shown to decrease nutrients and sediments traveling downstream.

The lake's low temperatures and extreme depth can slow the decomposition rate of organic matter. For example, the almost perfectly preserved body of a diver was found at a depth of {{convert|300|ft|m|-1}} 17 years after he went missing.{{cite news|url=https://www.latimes.com/archives/la-xpm-2011-aug-09-la-me-missing-diver-20110809-story.html|title=At Lake Tahoe, a scuba diver's body is recovered after 17 years|newspaper=Los Angeles Times|date=August 9, 2011}}

The area around Lake Tahoe was previously inhabited by the Washoe Native Americans. Lake Tahoe was the center and heart of Washoe Indian territory, including the upper valleys of the Walker, Carson and Truckee Rivers.

Cave Rock is a large rock formation located on the southeastern shore of the lake and considered a sacred site for the Washoe Indians. The Washoe people called Cave Rock deʔek wadapush (Washo for Standing Gray Rock). Part of why the Washoe felt the Cave was sacred was due to "The Lady of the Lake" a rock formation on the side of the Cave which looks like the profile of a woman's face gazing out towards the lake. Washoe ancestors performed religious ceremonies inside the cave. There were significant but ultimately unsuccessful protests from the tribe when a tunnel was blasted through the rock in 1931 for Highway 50.{{cite web |url=https://sierranevadageotourism.org/entries/cave-rock/44075513-fee3-4532-9ca6-715a1ae400d2 |title=Cave Rock |website=Sierranevadageotourism.org |access-date=October 8, 2021 }}

Lt. John C. Frémont was the first European-American to see Lake Tahoe, during his second exploratory expedition on February 14, 1844.{{cite web|url=http://www.trpa.org/default.aspx?tabindex=5&tabid=95 |archive-url=https://web.archive.org/web/20120205131013/http://trpa.org/default.aspx?tabindex=5&tabid=95 |archive-date=February 5, 2012 |title=Lake Tahoe Facts and Figures |access-date=October 26, 2008 |publisher=Tahoe Regional Planning Association |url-status=dead }} Fremont named it "Lake Bonpland" after Aimé Bonpland (a French botanist who had accompanied Prussian explorer Alexander von Humboldt in his exploration of Mexico, Colombia and the Amazon River).{{cite web |url=http://www.rubiconbay.net/name.htm |title=Where does the name "Tahoe" come from? |publisher=rubiconbay.net |access-date=May 9, 2007 |archive-url = https://web.archive.org/web/20070315192037/http://www.rubiconbay.net/name.htm |archive-date = March 15, 2007}} Lake Bonpland's usage never became popular, and the name changed from "Mountain Lake" to "Fremont's Lake" several years after. John Calhoun Johnson, Sierra explorer and founder of "Johnson's Cutoff" (now U.S. Route 50), named it Fallen Leaf Lake after his Indian guide. Johnson's first job in the west was in the government service carrying the mail on snowshoes from Placerville to Nevada City, during which time he named it "Lake Bigler" after California's third governor John Bigler. In 1853 William Eddy, the surveyor general of California, identified the lake as Lake Bigler.

Image:CalifNevada1860s.jpg

The usage never became universal. By the start of the American Civil War in 1861, former Governor Bigler, once a Free Soil Democrat, had become such an ardent Confederate sympathizer that Union advocates objected to the name. Unionists and Republicans alike derided the former governor's name on the lake on official state maps. Pro-Union papers called for a "change from this Secesh appellation" and "no Copperhead names on our landmarks for us." Several Unionist members in the Legislature suggested changing the name to the fanciful sounding "Tula Tulia". The Sacramento Union jokingly suggested the name "Largo Bergler" for Bigler's widely perceived financial incompetency in his final term and contemporary Southern sympathies. Within a year, different maps referred to the lake not only as Bigler, but also as "Mountain Lake" and "Maheon Lake".

The debate took a new direction when William Henry Knight, mapmaker for the federal U.S. Department of the Interior, and colleague Dr. Henry DeGroot of the Sacramento Union joined the political argument in 1862. As Knight completed a new map of the lake, the mapmaker asked DeGroot for a new name of the lake. DeGroot suggested "Tahoe", a local tribal name he believed meant "water in a high place". Knight agreed, and telegraphed to the Land Office in Washington, D.C., to officially change all federal maps to now read "Lake Tahoe". Knight later explained his desire for a name change, writing, "I remarked (to many) that people had expressed dissatisfaction with the name "Bigler", bestowed in honor of a man who had not distinguished himself by any single achievement, and I thought now would be a good time to select an appropriate name and fix it forever on that beautiful sheet of water."{{cite web |url=http://www.tahoeinfo.com/visit/history.htm |title=History of Lake Tahoe |publisher=South Lake Tahoe Chamber of Commerce |access-date=May 9, 2007 |archive-url = https://web.archive.org/web/20070502000925/http://www.tahoeinfo.com/visit/history.htm |archive-date = May 2, 2007}}

File:Albert_Bierstadt_-_Lake_Tahoe,_California.jpg, Lake Tahoe, California, 1867]]

"Lake Tahoe", also like "Lake Bigler", did not gain universal acceptance. Mark Twain, a critic of the new name, called it an "unmusical cognomen". In an 1864 editorial regarding the name in the Virginia City Territorial Enterprise, Twain cited Bigler as being "the legitimate name of the Lake, and it will be retained until some name less flat, insipid and spooney than "Tahoe" is invented for it."{{Cite news|title=Legislative Proceedings|first=Mark|last=Twain|url=http://www.twainquotes.com/18640212t.html|access-date=2023-01-02|via=www.twainquotes.com|newspaper=Virginia City Territorial Enterprise|date=February 1864}} In Twain's 1869 novel Innocents Abroad, Twain continued to deride the name in his foreign travels. "People say that Tahoe means 'Silver Lake' – 'Limpid Water' – 'Falling Leaf.' Bosh! It means grasshopper soup, the favorite dish of the digger tribe – and of the Paiutes as well."{{cite book |author=Mark Twain|title=The Innocents Abroad |location=Mineola, NY |publisher=Dover Publications |year=2003 |orig-year=1869 |isbn=0-486-42832-X}} The Placerville Mountain Democrat began a notorious rumor that "Tahoe" was actually an Indian renegade who plundered upon White settlers. To counter the federal government, the California State Legislature reaffirmed in 1870 that the lake was indeed called "Lake Bigler".

But to most surveys and the general public it was known as Lake Tahoe.{{cite book|last=Erwin|first=Gudde|title=California Place Names: The origin and etymology of current geographical names|date=2004|publisher=University of California Press|location=Berkeley, CA|page=121}} By the end of the 19th century "Lake Bigler" had nearly completely fallen out of popular use in favor of "Tahoe". The California State Legislature reversed its previous decision in 1945, officially changing the name to Lake Tahoe.

Upon discovery of gold in the South Fork of the American River in 1848, thousands of gold seekers going west passed near the basin on their way to the gold fields. Europeans first impinged upon the Lake Tahoe basin with the 1858 discovery of the Comstock Lode, a silver deposit just {{convert|15|mi|km}} to the east in Virginia City, Nevada. From 1858 until about 1890, logging in the basin supplied large timbers to shore up the underground workings of the Comstock mines.{{Cite news|last=Brown|first=Julie|date=October 30, 2020|title=Why Tahoe never became a national park|url=https://www.sfgate.com/renotahoe/article/Why-Tahoe-isn-t-a-national-park-15685996.php|access-date=December 27, 2020|work=SFGATE|language=en-US}} The logging was so extensive that loggers cut down almost all of the native forest.

Lake Tahoe became a transportation hub for the surrounding area as mining and logging commenced prior to development of railroads. The first mail delivery was via a sailboat which took a week to visit each of the lakeside communities. The first steamboat on Lake Tahoe was the {{convert|42|ft|m|adj=on}} paddle wheel tugboat Governor Blasdel towing log rafts to a sawmill on the south side of Glenbrook Bay from 1863 until her boiler exploded in 1877. The {{convert|40|ft|m|adj=on}} Truckee and {{convert|55|ft|m|adj=on}} propeller-driven Emerald were also towing log rafts in 1870.{{cite web |url=http://www.dougstepsout.com/2015/01/12/lake-tahoe-the-lake-of-the-sky-part-ix-the-early-steamers-on-the-lake/ |title=The Early Steamers on the Lake |last=Noble |first=Doug |date=January 12, 2015 |publisher=Doug Steps Out |access-date=September 3, 2017 }} J.A. Todman brought steam-powered passenger service to Lake Tahoe in 1872 with the {{convert|100|ft|m|adj=on}} 125-passenger side-wheel steamer Governor Stanford which reduced the mail delivery trip around Lake Tahoe to eight hours.{{cite web |url=http://www.sierrasun.com/entertainment/the-arts/sierra-history-a-look-at-lake-tahoes-wonderful-wood-powered-steamship-past/ |title=Sierra History: a look at Lake Tahoe's wonderful wood-powered steamship past |last=McLaughlin |first=Mark |date=August 3, 2015 |publisher=Sierra Sun |access-date=September 3, 2017 }} Todman expanded service with steamboats Mamie, Niagara, and Tod Goodwin. Lawrence & Comstock provided competition with their steel-hulled steamboat Tallac in 1890 and later purchased Todman's steamboats Mamie and Tod Goodwin. The Carson and Tahoe Lumber and Fluming Company purchased the {{convert|83|ft|m|adj=on}} Niagara and built the iron-hulled steamboats Meteor in 1876 and Emerald (II) in 1887. The {{convert|75|ft|m|adj=on}} Meteor was the fastest boat on Lake Tahoe with a speed of {{convert|22|mile|km}} per hour. Lake Tahoe Railway and Transportation Company dominated the passenger and mail route after launch of their 200-passenger steamboat Tahoe on June 24, 1896. The 154-ton Tahoe was {{convert|170|ft|m}} long with a slender {{convert|18|ft|m|adj=on}} beam so her {{convert|1200|HP|kW}} engines could push her over the lake at 18.5 knots. Lake Tahoe Railway and Transportation Company purchased Tallac and rebuilt her as Nevada with length increased by {{convert|20|ft|m}} to serve as a backup steamboat when Tahoe required maintenance.{{cite book |last=McKean |first=Owen F. |title =Railroads and Steamers of Lake Tahoe |publisher =Francis Guido |location =San Mateo, California |pages =9, 14, 15,30&31 }}

Tod Goodwin burned at Tallac, and most of the other steamboats were retired as the sawmills ran out of trees and people began traveling by automobile. Niagara was scrapped at Tahoe City in 1900. Governor Stanford was beached at Glenbrook where its boiler was used until 1942 heating cottages at Glenbrook Inn and Ranch. Steamboats continued to carry a mail clerk around Lake Tahoe until 1934, when the mail contract was given to the {{convert|42|ft|m|adj=on}} motorboat Marian B powered by two Chevrolet engines. Mail delivery moved ashore after the Marian B was lost on May 17, 1941, when her owner and the mail clerk attempted mail delivery during a storm. The {{convert|60|ft|m|adj=on}} Emerald (II) left Lake Tahoe in 1935 to become a fishing boat in San Diego. Historic Tahoe, Nevada, and Meteor were purchased with hope they might be preserved; but were scuttled in deep water after deterioration made preservation impractical. The latter two lie in Glenbrook Bay, but Tahoe sank in deeper water.

Even in the mining era, the potential of the basin as a tourist destination was recognized. Tahoe City was founded in 1864 as a resort community for Virginia City.{{USGS|title=Stream and Ground-Water Monitoring Program, Lake Tahoe Basin, Nevada and California|url=http://pubs.usgs.gov/fs/FS-100-97/|access-date=November 24, 2009}}

Public appreciation of the Tahoe basin grew, and during the 1912, 1913 and 1918 Congressional sessions, congressmen tried unsuccessfully to designate the basin as a national park.

File:Lake Tahoe Dam 1.jpg at Lake Tahoe Dam]]

While Lake Tahoe is a natural lake, it is also used for water storage by the Truckee-Carson Irrigation District (TCID). The lake level is controlled by Lake Tahoe Dam built in 1913 at the lake's only outlet, the Truckee River, at Tahoe City. The {{convert|18|ft|m|1|adj=on}} high dam can increase the lake's capacity by {{convert|744600|acre.ft|m3|abbr=on|lk=in}}.{{cite web |url=http://www.usbr.gov/mp/lbao/water_projects.html |archive-url=https://web.archive.org/web/20111012215418/http://www.usbr.gov/mp/lbao/water_projects.html |archive-date=October 12, 2011 |title=Water Delivery Projects and Facilities |website=Lahontan Basin Area Office |publisher=U.S. Bureau of Reclamation |access-date=November 24, 2009 |url-status=live}}

During the first half of the 20th century, development around the lake consisted of a few vacation homes. The post-World War II population and building boom, followed by construction of gambling casinos in the Nevada part of the basin during the mid-1950s, and completion of the interstate highway links for the 1960 Winter Olympics held at Olympic Valley (then known as "Squaw Valley"), resulted in a dramatic increase in development within the basin. From 1960 to 1980, the permanent residential population increased from about 10,000 to greater than 50,000, and the summer population grew from about 10,000 to about 90,000. Since the 1980s, development has slowed due to controls on land use.

Lake Tahoe is divided by the prominent interstate boundary between California and Nevada, where the two states' edges make their iconic directional turn near the middle of the lake. This boundary has been disputed since the mid-nineteenth century.{{cite news |last=Brean |first=Henery |date=May 2, 2009 |title=Nevada and California have a border dispute going back to 1850 |url=https://www.reviewjournal.com/ |work=Las Vegas Review-Journal |archive-url=https://web.archive.org/web/20010215013824/http://www.reviewjournal.com/ |archive-date= February 15, 2001 |access-date=June 4, 2018}} [http://www.boitano.net/history/california/Nevada%20and%20California%20have%20a%20border%20dispute%20going%20back%20to%201850%20%20www_rgj_com%20%20Reno%20Gazette-Journal.htm Alt URL]

As part of the compromise of 1850, California was speedily admitted to the Union. In doing so, Congress approved the California Constitution which defined the state's boundary in reference to geographical coordinates. This includes the section of the 120th meridian that is between the 42nd parallel at the Oregon border and the 39th parallel amid Lake Tahoe, and an oblique line continuing from that point southward to where the Colorado River crosses the 35th parallel.{{cite court |litigants=California v. Nevada |vol=44 |reporter=U.S. |opinion=125 |court=Supreme Court of the United States |date=1980 |url=https://www.law.cornell.edu/supremecourt/text/447/125 |access-date=June 4, 2018 |quote=The two straight-line segments that make up the boundary between California and Nevada were initially defined in California's Constitution of 1849. The first, the "north-south" segment, commences on the Oregon border at the intersection of the 42d parallel and the 120th meridian and runs south along that meridian to the 39th parallel. And the second, the "oblique" segment, begins at that parallel and runs in a southeasterly direction to the point where the Colorado River crosses the 35th parallel. Cal.Const., Art. XII (1849). In 1850, when California was admitted to the Union, Congress approved the 1849 Constitution, and with it California's eastern boundary. Act of Sept. 9, 1850, 9 Stat. 452.}} Fourteen years later, Congress approved the Nevada Constitution when it was admitted as a state in 1864, which defined its western border at the forty third degree of Longitude West from Washington, D.C., and its southwestern border along the oblique section of the boundary line of California. While 43 degrees of longitude west from the Washington Meridian does not really coincide with the 120 degrees longitude west of Greenwich, the 1864 Congress was of the belief that the two lines were identical; the former was abandoned nationally in 1884. The centuries long dispute that erupted began with boundary discrepancies across many surveys within which were valuable mineral deposits; Nevada also had a wish that California would assent to cede its land east of the Pacific crest as had been preauthorized by Congress in 1850. The first consequential attempt to mark the California-Nevada boundary was the 1863 J.F. Houghton and Butler Ives line. An 1867–1868 survey of the California-Oregon border by Daniel G. Major for the United States General Land Office found the 120th meridian more than two miles west of the prior line, so it was followed by the 1872 survey by Alexey W. Von Schmidt. Against initial instructions, Von Schmidt began his survey with the 1872 California-Nevada State Boundary Marker{{cite web |title=NGS Data Sheet – California Nev Iron Mon |url=https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=KS1363 |website=Survey Marks and Datasheets |publisher=NOAA: National Geodetic Survey}} which was six-tenths of a mile east of the Houghton-Ives line. When he discovered the Colorado River had shifted at the 35th parallel, he simply changed the endpoint resulting in a survey that was neither straight nor accurate. Substantial doubts led Congress in 1892 to fund the United States Coast and Geodetic Survey to remark the oblique line.{{cite web |title=NGS Data Sheet – Initial Mon – 1 CA NV |url=https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JR1261 |website=Survey Marks and Datasheets |publisher=NOAA: National Geodetic Survey}} This new survey found the Von Schmidt line to be 1,600 to 1,800 feet too far west, but both surveys were then used by both states.{{cite web|url={{NRHP url|id=81000387}}|author=Abbe, Donald|title=1872 California-Nevada State Boundary Marker|website=National Register of Historic Places Inventory-Nomination Form|publisher=National Park Service|year=1979|access-date=June 20, 2018|quote=Between 1855 and 1900, six different surveys of California's eastern boundary were made. None of them agreed as to the location of the boundary or the 120th degree of longitude. Various surveys were conducted in 1855, 1863, 1872, 1889 and 1893. The 1872 Von Schmidt survey is the only one that was clearly marked along its entire length with stone, rock, wood and iron markers. The 1872 survey also was accepted longer than any other survey before its inaccuracy became widely known. It was not until 1893 that the Von Schmidt line was found to be 1,600 to 1,800 feet too far west. However, even after 1893, the Von Schmidt line remained the accepted boundary, and is still used more today than the more accurate 1893 version. Oddly enough, both the 1872 and 1893 lines have been recognized and are used by both California and Nevada.}} Unsurprisingly, the combination of the 1893 C.G.S. survey's oblique line and Schmidt's well marked north–south line do not intersect precisely at the 39th parallel as mandated by the California Constitution. Congress does not have the constitutional power to unilaterally move state boundaries.

The wealth in natural resources between the Sierra Crest and the easternmost sections of survey lines created a powerful source for conflict. Major mining sites in the Tahoe area were in disputed territory. In a striking display of opportunism which ostensibly occurred because the boundary was still "officially" unsurveyed, settlers arrogated parts of California up to the irregular Sierra Crest tens of miles east of the boundary—defined over six years prior—in an attempt to create Nataqua Territory. An armed skirmish known as the Sagebrush War included gunshots exchanged between militia.{{cite news |first=Henry |last=Brean |title=Four Corners mistake recalls long border feud between Nevada, California |url=http://www.lvrj.com/news/43760307.html |archive-url=https://web.archive.org/web/20120402150233/http://www.lvrj.com/news/43760307.html |archive-date=April 2, 2012 |work=Las Vegas Review-Journal |date=April 27, 2009 |access-date=April 27, 2009 |url-status=live}} Even after six surveys, conflict remained over which of them, if any, were legally binding in marking the boundary; this was partially heard by the Supreme Court of the United States in 1980, where the doctrine of acquiescence was invoked.

A boundary defined in terms of geographical coordinates is theoretically precise, but poses pragmatic challenges to implement. Where a particular coordinate actually lies on the surface of the earth is dependent on the figure of the Earth. In the mid-1800s the Bessel ellipsoid of 1841 or the Clarke ellipsoid of 1866 were widely used; the Hayford ellipsoid of 1910 may later have been used by the United States Coast and Geodetic Survey. The standard ellipsoid for western states in 1849—which is generally congruent with that year's version of the Astronomical Almanac—is implicit in California's constitutional boundary definition; incessant invention of new datums by new and potentially interested parties do not re-render the old boundary definition. Holding assumptions of the earth back-in-time, modern satellite assisted survey techniques can determine location and transform them onto old ellipsoids to within a centimeter. Celestial navigation{{cite web |title=NGS Data Sheet – Von Schmidts Iron Monument|url=https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=KS1400 |website=Survey Marks and Datasheets |publisher=NOAA: National Geodetic Survey |quote=The south face has the lettering inscribed – 1872 longitude 120 west of Greenwich A.W. Von Schmidt U.S. astronomer and surveyor}}{{cite web |title=NGS Data Sheet – Upper Truckee |url=https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JS3908 |website=Survey Marks and Datasheets |publisher=NOAA: National Geodetic Survey |quote=It was placed near the old blocks that mark the astronomical station of Van Schmidt.}} techniques by contrast, are accurate up to two-fifths of a mile; uncertainty in the latter was known, but precision then was unobtainable.

The legacy of this dispute continues. There is an official federal obelisk-shaped monument marking the oblique California border, which is now surrounded by Edgewood Tahoe golf resort that is claimed and taxed by Nevada.{{cite map |author = United States Geological Survey |year = 1982 |title = South Lake Tahoe, Calif. – Nev. |url = https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_South%20Lake%20Tahoe_300625_1955_24000.jpg |format = JPEG |type = Topographic map |series = 7.5 Minute Series |scale = 1:24,000 |location = Reston, VA |publisher = United States Geological Survey |access-date= July 17, 2018}} A federal survey monument was removed to the Lake Tahoe Historical Society circa 2018. The Von Schmidt line crosses US 50 on the west edge of present-day Applebee's, and the east edge of the Marcus Ashley Gallery in Tahoe Crescent V Shopping Center.{{cite map |author = United States Geological Survey |year = 1891 |title = Markleeville Sheet |url = https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_Markleeville_299437_1891_125000.jpg |format = JPEG |type = Topographic map |scale = 1:125,000 |location = Reston, VA |publisher = United States Geological Survey |access-date= July 17, 2018}} The Nevada community of Stateline has been moved east.{{cite map |author = United States Geological Survey |year = 1992 |title = South Lake Tahoe, Calif. – Nev. |url = https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_South%20Lake%20Tahoe_295270_1992_24000.jpg |format = JPEG |type = Topographic map |series = 7.5 Minute Series |scale = 1:24,000 |location = Reston, VA |publisher = United States Geological Survey |access-date= July 17, 2018}}

The boundary splits Lake Tahoe unevenly, with two-thirds in California and one-third in Nevada.{{cite web |url= http://water.nv.gov/WaterPlanning/truckee/truckee1.cfm#N_13_ |archive-url= https://web.archive.org/web/20100825094729/http://water.nv.gov/WaterPlanning/truckee/truckee1.cfm |archive-date= August 25, 2010 |title= Truckee River Chronology |access-date=October 26, 2008 |publisher=Nevada Department of Conservation & Natural Resources }} In California, Lake Tahoe is divided between Placer County and El Dorado County. In Nevada, Lake Tahoe is divided among Washoe County, Douglas County and Carson City (an independent city).

Lake Tahoe is a U.S. Navigable Waterway,{{cite web |title=33 CFR 2.36(a)(3)(i) - Navigable waters of the United States, navigable waters, and territorial waters |url=https://www.law.cornell.edu/cfr/text/33/2.36 |publisher=United States |quote=navigable waters of the United States, navigable waters, and territorial waters mean...Internal waters of the United States not subject to tidal influence that:...Are or have been used, or are or have been susceptible for use, by themselves or in connection with other waters, as highways for substantial interstate or foreign commerce, notwithstanding natural or man-made obstructions that require portage...}}{{cite court |litigants=Kaiser Aetna v. United States |vol=444 |reporter=US |court=Supreme Court of the United States |opinion=164 |url=https://www.law.cornell.edu/supremecourt/text/444/164 |date=December 4, 1979 |quote= four tests for determining what constitutes navigable waters: whether the body of water (1) is subject to the ebb and flow of the tide, (2) connects with a continuous interstate waterway, (3) has navigable capacity, and (4) is actually navigable. Using these tests, courts have held that bodies of water much smaller than lakes and rivers also constitute navigable waters. Even shallow streams that are traversable only by canoe have met the test.}} under federal jurisdiction,{{Cite web|url=https://www.law.cornell.edu/uscode/text/18/7|title=18 U.S. Code § 7 - Special maritime and territorial jurisdiction of the United States defined|website=Law.cornell.edu|access-date=February 15, 2022}}{{cite web |title=33 CFR 2.38(a) - Waters subject to the jurisdiction of the United States; waters over which the United States has jurisdiction |url=https://www.law.cornell.edu/cfr/text/33/2.38 |publisher=United States |quote=Waters subject to the jurisdiction of the United States and waters over which the United States has jurisdiction mean the following waters...Navigable waters of the United States, as defined in § 2.36(a). }}{{cite web |title=14 U.S. Code § 2 - Primary duties |url=https://www.law.cornell.edu/uscode/text/14/2 |publisher=United States |quote=The Coast Guard shall—(1) enforce or assist in the enforcement of all applicable Federal laws on, under, and over the high seas and waters subject to the jurisdiction of the United States;...(3) administer laws and promulgate and enforce regulations for the promotion of safety of life and property on and under the high seas and waters subject to the jurisdiction of the United States, covering all matters not specifically delegated by law to some other executive department}} and the public is allowed to occupy any watercraft as close to any shore as the craft is navigable. Public capacity to navigate across any land formerly inundated by the waterway is not extinguished by the lowering of the lake level; this federal easement is maintained under United States law.{{cite web |title=33 CFR 329.4 - General definition |url=https://www.law.cornell.edu/cfr/text/33/329.4 |publisher=United States |quote=Navigable waters of the United States are those waters that are subject to the ebb and flow of the tide and/or are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce. A determination of navigability, once made, applies laterally over the entire surface of the waterbody, and is not extinguished by later actions or events which impede or destroy navigable capacity.}} Because small fluctuations in the height of the shoreline can result in substantive temporal immersions by the lake surface, the irreversible public easement slowly grows larger in size.

While the submerged lands generally belong to the state,{{Cite web|url=https://www.law.cornell.edu/uscode/text/43/chapter-29|title=43 U.S. Code Chapter 29 - SUBMERGED LANDS|website=Law.cornell.edu|access-date=February 15, 2022}} the water held in the lake is federally controlled by the US Bureau of Reclamation,{{cite web |url=https://www.usbr.gov/projects/index.php?id=368 |title=Newlands Project |publisher=U.S. Bureau of Reclamation |website=Usbr.gov|date=May 11, 2011 |access-date=July 6, 2018}} and immersion of the shoreline itself would be a common law trespass against east lakefront property owners if it were not for the land—below the theoretical maximum elevation of the lake—being in a perpetual federal easement.{{cite court |litigants=Rancho Viejo v. Tres Amigos Viejos |vol=100 |reporter=Cal. App. 4th |opinion=550 |pinpoint= |court=Court of Appeals of California |date=July 25, 2002 |url=https://law.justia.com/cases/california/court-of-appeal/4th/100/550.html |access-date=February 1, 2016 |quote=Many activities will give rise to liability both as a trespass and a nuisance, if they result in the violation of a person's right of exclusive possession of land and also constitute an unreasonable and substantial interference with the use and enjoyment of the land. A trespass is an invasion of the interest in the exclusive possession of land, as by entry upon it. A nuisance is an interference with the interest in the private use and enjoyment of the land and does not require interference with the possession of it.}} Neither state has the authority to rescind navigability along the shoreline below the highmark of the waterbody, because it has been granted under federal law through the Enumerated powers of the United States. The entire waterbody is navigable; it is common for the majority of users to be operating negligible draft one-person craft such as kayaks and standup paddleboards. The Tahoe Regional Planning Agency does not have the authority to override existing federal law even if it was also created by Congress.

Like the interstate boundary itself, the high watermark has been disputed as well. The theoretical maximum elevation of the lake is {{convert|6,229.1|feet|m}}, using the Lake Tahoe datum. The yearly maximum is commonly {{convert|0.35|ft|m}} lower. Strong winds across the lake's substantial fetch can create a surge which further lifts the high-water line on leeward shores, known as a seiche.

On the California side, the shorezone is expressly maintained in a constitutionally{{cite web |title=California Constitution Article X Section 4 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CONS§ionNum=SEC.%204.&article=X |website=California Legislative Information |publisher=State of California |quote=No individual, partnership, or corporation, claiming or possessing the frontage or tidal lands of ... navigable water in this State, shall be permitted to exclude the right of way to such water whenever it is required for any public purpose, nor to destroy or obstruct the free navigation of such water; and the Legislature shall enact such laws as will give the most liberal construction to this provision, so that access to the navigable waters of this State shall be always attainable for the people thereof.}} and statutorily{{cite web |title=California Government Code Section 670 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=[670. |website=California Legislative Information |publisher=State of California |quote=The State is the owner of all land below tide water, and below ordinary high-water mark, bordering upon tide water within the State; of all land below the water of a navigable lake or stream; of all property lawfully appropriated by it to its own use; of all property dedicated to the State; and of all property of which there is no other owner.}} protected public trust,{{cite court |litigants=Illinois Central Railroad v. Illinois |vol=146 |reporter=US |opinion=387 |court=Supreme Court of the United States |date=1892 |url= }} analogous to an easement,{{cite court |litigants=Fogerty v. State of California |vol=87 |reporter=Cal.App.3d |opinion=225 |pinpoint= |court=Court of Appeals of California |date=November 24, 1986 |url=https://law.justia.com/cases/california/court-of-appeal/3d/187/224.html |access-date=June 6, 2018 |quote=Littoral property owners owned the shorezone of a lake in fee simple to the low watermark of the lake in its current condition; however, their fee simple title in the shorezone was impressed with a public trust, analogous to an easement, acquired by the state pursuant to the doctrine of prescription and held for the benefit of the public for purposes of commerce, navigation, fishing, recreation, and preservation of the land in its natural state. ... The uses of land subject to the public trust over the shorezone of navigable waters are broader than actual uses of the land previously by the public. [http://www.lexisnexis.com/clients/CACourts/ See Official Reports Annotated Here]}}{{cite court |litigants=State of California v. Superior Court (Fogerty) |vol=297 |reporter=Cal.3d |opinion=240 |pinpoint= |court=Supreme Court of California |date=March 20, 1981 |url=https://scocal.stanford.edu/opinion/state-california-v-superior-court-fogerty-30560 |access-date=November 25, 2018 |quote= plaintiffs may use the shorezone for any purposes which are not incompatible with the public trust. Landowners who have previously constructed docks, piers and other structures in the shorezone may continue to use these facilities unless the state determines, in accordance with applicable law, that their continued existence is inconsistent with the reasonable needs of the trust. [http://www.lexisnexis.com/clients/CACourts/ See Official Reports Annotated Here]}} which is managed by the California State Lands Commission{{Cite web|url=https://www.slc.ca.gov/Meeting_Summaries/2011_Documents/04-06-11/Complete_Items/72.pdf|title=Calendar Item 72|website=Slc.ca.gov|access-date=February 15, 2022}} and under a concurrent federal easement. As public land, the shorezone on this side may be used for nearly any purpose, rather than just travel. Upland owner is not entitled to utilize their land subject to public trust in any manner incompatible with public's interest in the property—which includes broad recreational uses.{{cite court |litigants=State of California v. Superior Court (Lyon) |vol=29 |reporter=Cal.3d |court=Supreme Court of California |opinion=210 |pinpoint=222,230-231,232 |url=https://scocal.stanford.edu/opinion/state-california-v-superior-court-lyon-30546 |date=1981 |quote=California succeeded to the ownership of the beds of such waters upon its admission to the Union, to the high water mark...It is well settled that if the state holds these lands in trust for the benefit of the public, its conveyance of title to private persons does not necessarily free the property from the burden of the public trust. Instead, unless the conveyance is made for the purpose of promoting trust goals, the grantee takes title subject to the rights of the public...the public's rights in tidelands are not confined to commerce, navigation and fishing, but include recreational uses and the right to preserve the tidelands in their natural state...We hold that the same incidents of the trust applicable to tidelands also apply to nontidal navigable waters and that the public's interest is not confined to the water, but extends also to the bed of the water...Nothing in the language of section 830 requires a conclusion that riparian landholders take free of the public's rights in the lands between low and high water in navigable lakes and streams.}} Owner is akin to a trustee of public trust for benefit of all the people, and as such has fiduciary responsibilities to the beneficiaries; state remains trustee with duty to supervise trust.{{cite court |litigants=Golden Feather Community Assn. v. Thermalito Irrigation Dist. |vol=209 |reporter=Cal.App.3d |court=Court of Appeals of California |opinion=1276 |pinpoint=1283 |date=1989 |quote=Any conveyance of trust property to a private individual is necessarily subject to the public trust and the state remains trustee with the duty to supervise the trust.}}{{cite court |litigants=Marks v. Whitney |vol=6 |reporter=Cal.3d |court=Supreme Court of California |opinion=251 |pinpoint=259 |url=https://scocal.stanford.edu/opinion/marks-v-whitney-30094 |date=1971 |quote=the buyer of land under these statutes receives the title to the soil, the Jus privatum, subject to the public right of navigation, and in subordination to the right of the state to take possession and use and improve it for that purpose, as it may deem necessary. In this way the public right will be preserved, and the private right of the purchaser will be given as full effect as the public interests will permit.’}} It is a crime for anyone who hinders, prevents, or obstructs free passage over the state lands, trusts, easements,{{cite web |title=Cal.Penal.Code § 370 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PEN§ionNum=370. |publisher=State of California |quote=Anything which is...an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property by an entire community or neighborhood, or by any considerable number of persons, or unlawfully obstructs the free passage or use, in the customary manner, of any navigable lake, or river, bay, stream, canal, or basin, or any public park, square, street, or highway, is a public nuisance.}}{{cite web |title=Cal.Penal.Code § 372 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PEN§ionNum=372. |publisher=State of California |quote=Every person who maintains or commits any public nuisance, the punishment for which is not otherwise prescribed, or who willfully omits to perform any legal duty relating to the removal of a public nuisance, is guilty of a misdemeanor.}}{{Cite web|url=https://www.slc.ca.gov/wp-content/uploads/2018/11/2017-PublicAccessGuide.pdf|title=A LEGAL GUIDE TO THE PUBLIC'S RIGHTS TO ACCESS AND USE CALIFORNIA'S NAVIGABLE WATERS |website=Slc.ca.gov |publisher=State of California |access-date=May 5, 2023}} or federal public easement.{{cite web |title=Cal.Penal.Code § 420 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PEN§ionNum=420. |publisher=State of California |quote=Every person...who unlawfully hinders, prevents, or obstructs free passage over or through the public lands of the United States within the State of California, for the purpose of entry...is guilty of a misdemeanor.}}

Building new piers can infringe on the public trust, which among many things, is purposed to preserve the land in its natural state. Accretions created in the shorezone by artificial means remain as public land because they are part of the public trust.{{cite court |litigants=California ex rel. State Lands Com'n v. United States |vol=457 |reporter=US |court=Supreme Court of the United States |opinion=273 |url=https://www.law.cornell.edu/supremecourt/text/457/273 |date=June 18, 1982 |quote=Under California law where an accretion is caused by construction of artificial works on water, boundary does not move but becomes fixed at ordinary high-water mark at time artificial influence is introduced.}}{{cite court |litigants=Carpenter v. Santa Monica |vol=63 |reporter=Cal.App.2d |court=Court of Appeals of California |opinion=772 |url=https://law.justia.com/cases/california/court-of-appeal/2d/63/772.html |date=April 17, 1944 |quote=Where title is deraigned from the United States, the question as to the extent of the grant is to be governed by federal and not by state law; but where title is deraigned from a federal patent confirming a Mexican grant, the extent of the right gained under the patent is to be determined by state and not by federal law.—The California rule is that in a controversy between the state or its grantees and the upland owner, artificial accretions belong to the state or its grantees as the owner of the tidelands.—that is, by the works of man, such as wharves, groins, piers, etc., and by the dumping of material into the ocean—belong to the state or its grantees, and do not belong to the upland owner.}}{{cite web |title=Cal. Civ. Code § 1007—Title by prescription; adverse possession; exemption of public property |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=1007. |quote=no possession by any person, firm or corporation no matter how long continued of any land, water, water right, easement, or other property whatsoever dedicated to a public use by a public utility, or dedicated to or owned by the state or any public entity, shall ever ripen into any title, interest or right against the owner thereof.}} The private Lakeside Park Association has made such an artificial accretion of land that is freely open for public use.{{cite web |title=Lake Tahoe Beach Weddings |url=http://www.laketahoebeachweddings.com |quote=see satellite images}} Access to and from the shorezone across private land on publicly enjoyed paths is by right-of-way{{cite web |title=Cal.Civ.Code § 801(a) |url=http://www.leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=801. |publisher=State of California |quote=The following land burdens, or servitudes upon land, may be attached to other land as incidents or appurtenances, and are then called easements: The right-of-way}} or prescriptive easement.{{cite web |title=Cal.Code.Civ.Proc. § 321 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP§ionNum=321. |publisher=State of California |quote=the person establishing a legal title to the property is presumed to have been possessed thereof within the time required by law, and the occupation of the property by any other person is deemed to have been under and in subordination to the legal title, unless it appear that the property has been held and possessed adversely to such legal title, for five years before the commencement of the action.}}{{cite web |title=Cal.Code.Civ.Proc. § 318 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP§ionNum=318. |publisher=State of California |quote=No action for the recovery of real property, or for the recovery of the possession thereof, can be maintained, unless it appear that the plaintiff, his ancestor, predecessor, or grantor, was seized or possessed of the property in question, within five years before the commencement of the action.}}{{cite web |title=Cal.Civ.Code § 806 |url=https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP§ionNum=321. |publisher=State of California |quote=The extent of a servitude is determined by the terms of the grant, or the nature of the enjoyment by which it was acquired.}}{{cite court |litigants=Main Street Plaza v. Cartwright & Main |vol=194 |reporter=Cal.App.4th |court=Court of Appeals of California |opinion=1044 |pinpoint=1054 |url=https://www.casemine.com/judgement/us/5914af32add7b0493474b78b |date=2011 |quote=To establish a prescriptive easement, a claimant must prove use of the property, for the statutory period of five years, which has been: (1) open and notorious; (2) continuous and uninterrupted; (3) hostile to the true owner; and (4) under a claim of right.}} Recent attempts by Lakefront Homeowners to use piers as "easement fences" to obstruct beach travel are encroaching centuries of established easement and admiralty law.

The accessibility of the Nevada beach-land below the high watermark has been the source of practical rather than legal controversy. The land is a public trust or easement under the Rivers and Harbors Act, the Submerged Lands Act, the several Coast Guard Authorization Acts, but affluent beachfront landowners and their elected civic leaders maintain the land is effectively private under state law because state law enforcement is not charged with enforcing federal law.{{cite web |title=US CONST ART X |url=https://www.govinfo.gov/content/pkg/GPO-CONAN-1992/pdf/GPO-CONAN-1992-10-11.pdf |quote=Commandeering Tenth Amendment prohibits the federal government from forcing states to pass or not pass certain legislation, or to enforce federal law. }} They dispute the high water mark itself by arguing that the state of Nevada has not agreed{{cite news |last1=Robinson |first1=Mark |title=Fact Checker: Are all Tahoe beaches public? |url=https://www.rgj.com/story/news/2014/03/09/fact-checker-are-all-tahoe-beaches-public/6209113/ |access-date=July 5, 2018 |publisher=Reno Gazette Journal |date=March 8, 2014 |quote=The land above the high-water mark is private property with no public access in California and Nevada}}{{cite news |last1=Cudahy |first1=Claire |title=High water level damages Lake Tahoe beachfront properties |url=https://www.recordcourier.com/news/local/high-water-level-damages-lake-tahoe-beachfront-properties/ |access-date=July 13, 2018 |agency=The Record Courier |publisher=Swift Communications, Inc. |date=April 13, 2018 |quote=In the Zephyr Cove neighborhood Marla Bay, beachfront properties have suffered from two years of water levels well above the lake's natural rim, which sits at an elevation of 6,223 feet. ...the U.S. District Court Water Master...is required by law to keep the water below the surface elevation of 6,229.1 feet, the federal legal limit ..."I've pleaded with the water master to drop the lake, and he said he can't—he's bound by law," said Smith. |archive-date=December 19, 2020 |archive-url=https://web.archive.org/web/20201219151500/https://www.recordcourier.com/news/local/high-water-level-damages-lake-tahoe-beachfront-properties/ |url-status=dead }} to either a highwater level or datum with California and the US.{{cite web |title=USGS 10337000 LAKE TAHOE A TAHOE CITY CA |url=https://waterdata.usgs.gov/usa/nwis/uv?site_no=10337000 |website=USGS Water Resources |publisher=U.S. Geological Survey |quote=Maximum legal limit...6,229.1; Natural rim of lake...6,223; Gage Datum...6,220}}{{cite news |last1=Hoffman |first1=Ryan |title=Pier review: Tahoe Regional Planning Agency board overturns decision on Zephyr Cove pier |url=https://www.tahoedailytribune.com/news/pier-review-tahoe-regional-planning-agency-board-overturns-decision-on-zephyr-cove-pier/ |publisher=Tahoe Daily Tribune |date=February 28, 2019 |quote=Pohl also argued the structure failed to extend beyond the high-water mark, as required under TRPA's definition of a pier. He pointed to "photographic evidence" showing that even at full capacity, Tahoe's waters did not extend underneath the structure....Topographical surveys that are part of the property's record show the structure stretches beyond the high-water mark.}} Some Civic leaders for the Nevada shore have been pushing a frivolous{{cite web |title=U.S. Constitution, Article VI |url=https://www.law.cornell.edu/constitution/articlevi |publisher=United States of America |quote=This Constitution, and the laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the Constitution or laws of any State to the contrary notwithstanding.}} states rights theory of property law—which intermittently nullifies federal easements whenever the lake level recedes—which has never been tested in federal court.{{cite web |title=28 U.S. Code § 1331. Federal question |url=https://www.law.cornell.edu/uscode/text/28/1331 |publisher=United States |quote=The district courts shall have original jurisdiction of all civil actions arising under the Constitution, laws, or treaties of the United States.}} Instilling public fear of criminal trespassing is the core goal under the theory, which if actually prosecuted would be a risky power play. The sheriffs in Nevada are elected officials; false arrest can lead to an official's imprisonment and cost their electorate hundreds of thousands of dollars.{{cite web |title=42 U.S. Code § 1983 - Civil action for deprivation of rights |url=https://www.law.cornell.edu/uscode/text/42/1983 |publisher=United States |quote=Every person who, under color of any statute, ordinance, regulation, custom, or usage, of any State or Territory or the District of Columbia, subjects, or causes to be subjected, any citizen of the United States or other person within the jurisdiction thereof to the deprivation of any rights, privileges, or immunities secured by the Constitution and laws, shall be liable to the party injured in an action at law, suit in equity, or other proper proceeding for redress, except that in any action brought against a judicial officer for an act or omission taken in such officer’s judicial capacity, injunctive relief shall not be granted unless a declaratory decree was violated or declaratory relief was unavailable.}}{{cite web |title=18 U.S. Code § 242 - Deprivation of rights under color of law |url=https://www.law.cornell.edu/uscode/text/18/242 |publisher=United States |quote=Whoever, under color of any law, statute, ordinance, regulation, or custom, willfully subjects any person in any State, Territory, Commonwealth, Possession, or District to the deprivation of any rights, privileges, or immunities secured or protected by the Constitution or laws of the United States, or to different punishments, pains, or penalties, on account of such person being an alien, or by reason of his color, or race, than are prescribed for the punishment of citizens, shall be fined under this title or imprisoned not more than one year, or both;...}}{{cite web |title=18 U.S. Code § 1001 - Statements or entries generally |url=https://www.law.cornell.edu/uscode/text/18/1001 |publisher=United States |quote=whoever, in any matter within the jurisdiction of the executive, legislative, or judicial branch of the Government of the United States, knowingly and willfully—(1) falsifies, conceals, or covers up by any trick, scheme, or device a material fact; (2) makes any materially false, fictitious, or fraudulent statement or representation; or (3) makes or uses any false writing or document knowing the same to contain any materially false, fictitious, or fraudulent statement or entry; shall be fined under this title, imprisoned not more than 5 years...}}{{cite web |title=18 U.S. Code § 1519 - Obstruction of Justice |url=https://www.law.cornell.edu/uscode/text/18/1519 |publisher=United States |quote=Whoever knowingly alters, destroys, mutilates, conceals, covers up, falsifies, or makes a false entry in any record, document, or tangible object with the intent to impede, obstruct, or influence the investigation or proper administration of any matter within the jurisdiction of any department or agency of the United States or any case filed under title 11, or in relation to or contemplation of any such matter or case, shall be fined under this title, imprisoned not more than 20 years, or both.}} To be convicted of trespassing, one must be beyond reasonable doubt above the highwater mark, which under their states rights theory is an arbitrary fact to be found.{{cite court |litigants=Connally v. General Construction Co. |vol=269 |reporter=United States Reports |opinion=385 |pinpoint=391 |court=Supreme Court of the United States |date=January 4, 1926 |url=https://supreme.justia.com/cases/federal/us/269/385/case.html |access-date=February 1, 2016 |quote=That the terms of a penal statute creating a new offense must be sufficiently explicit to inform those who are subject to it what conduct on their part will render them liable to its penalties is a well recognized requirement, consonant alike with ordinary notions of fair play and the settled rules of law, and a statute which either forbids or requires the doing of an act in terms so vague that men of common intelligence must necessarily guess at its meaning and differ as to its application violates the first essential of due process of law.}} The land is concurrently claimed by the Nevada Department of Conservation and Natural Resources (Nevada Division of State Lands).{{cite web |title=State Lands Portfolio Executive Summary |url=https://lands.nv.gov/uploads/documents/PORTFOLIO_Executive_Summary_LATEST_with_tables.pdf |publisher=State of Nevada |quote="Upon statehood, Nevada received title to all sovereign lands which are submerged beneath navigable bodies of water which at present include Lake Tahoe..."}}{{cite web |title=State Land Office: Sovereign Lands |url=https://lands.nv.gov/authorizations-and-permitting/state-land-office |publisher=State of Nevada |quote="Upon statehood in 1864, title to the bed and banks of navigable water bodies passed from the federal government to the new state. It’s important to note that there are currently a limited number of sovereign lands that the state claims; not all of Nevada’s lakes and rivers are considered state owned. Here’s a list of state owned sovereign lands:...Lake Tahoe, Truckee River...The state owns the bed and banks of these bodies of water, generally to the ordinary and permanent high water mark."}} It is a crime to prevent or obstruct use of Nevada state lands.{{cite web |title=NRS 202.450 |url=https://www.leg.state.nv.us/Division/Legal/LawLibrary/NRS/NRS-202.html#NRS202Sec450 |publisher=State of Nevada |quote="it is a public nuisance for any person:...By force, threat or intimidation, or by fencing or otherwise enclosing, or by any other unlawful means, to prevent or obstruct the free passage or transit over or through any:...State land or other public land; or...Land dedicated to public use; or...To knowingly misrepresent the status of or assert any right to the exclusive use and occupancy of...state land or other public land or land dedicated to public use, if the person has no leasehold interest, claim or color of title, made or asserted in good faith, in or to the...state land or other public land or land dedicated to public use"}}{{cite web |title=NRS 202.470 |url=https://www.leg.state.nv.us/Division/Legal/LawLibrary/NRS/NRS-202.html#NRS202Sec470 |publisher=State of Nevada |quote="Every person who:...Shall commit or maintain a public nuisance, for which no special punishment is prescribed; or...Shall willfully omit or refuse to perform any legal duty relating to the removal of such nuisance; or...Shall let, or permit to be used, any building or boat, or portion thereof, knowing that it is intended to be, or is being used, for committing or maintaining any such nuisance, shall be guilty of a misdemeanor."}}

As the population grew and development expanded in the 1960s, the question of protecting the lake became more imperative. In 1969, the U.S. Congress and the California and Nevada State Legislatures created a unique compact to share resources and responsibilities. The Compact established the Tahoe Regional Planning Agency (TRPA), a bi-state agency charged with environmental protection of the Basin through land-use regulation and planning.{{Cite web|url=https://www.trpa.gov/|title=Tahoe Regional Planning Agency — TRPA|A Voice for Lake Tahoe|website=Trpa.gov|access-date=February 15, 2022}} In 1980, the U.S. Congress amended the Compact with public law 96-551. The law designated a new agency, the Tahoe Transportation District (TTD), to facilitate and implement Basin and regional transportation improvements/additions for the protection, restoration and use of the lake. Schisms between both agencies and local residents have led to the formation of grass-roots organizations that hold to even stricter environmentalism.{{Cite web|url=https://friendsoflaketahoe.org/|archive-url=https://web.archive.org/web/20101217141425/http://www.friendsoflaketahoe.org/|url-status=usurped|archive-date=December 17, 2010|title=Friends of Lake Tahoe|website=Friendsoflaketahoe.org|access-date=February 15, 2022}}

Lake Tahoe is also the location of several 19th and 20th century palatial homes of historical significance. The Thunderbird Lodge built by George Whittel Jr once included nearly {{convert|27|mi|km}} of the Nevada shoreline. Vikingsholm was the original settlement on Emerald Bay and included an island teahouse and a 38-room home. The Ehrman Mansion is a summer home built by a former Wells Fargo president in Sugar Pine Point and is now a state park. The Pony Express had a route that went from Genoa Station over Daggett Pass to Friday's Station and Yanks Station; it succeeded the route through Woodford's Station and Fountain Place Station both on the way to Strawberry Station.{{cite web |title=Pony Express Stations Across the American West |url=https://www.legendsofamerica.com/we-ponyexpressstations/ |publisher=Legends of America |access-date=July 5, 2018}}

File:lake tahoe storm drain el dorado beach 2.jpg was removed during construction of a new beach, called Lakeview Commons, opened in mid-2012.]]

{{Image frame |caption={{center|Average Lake Tahoe Clarity{{snd}}As Measured by Secchi Depth.{{cite web|title=Average Lake Tahoe Secchi Depth|url=https://tahoe.ucdavis.edu/sites/g/files/dgvnsk4286/files/inline-files/Secchi_Averages_2023_final.pdf|website=Tahoe Environmental Research Center (TERC)|publisher=University of California, Davis|access-date=August 2, 2024}}}}|content=

{{Graph:Chart|width=400|height=100|xAxisTitle=Year|yAxisTitle=Average Secchi Depth [feet]|legend=|colors=red,lightblue,orange |y1Title=Annual|y2Title=Winter|y3Title=Summer|type=line

|x=1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023

|y1=102.4,93.8,99.1,94.2,89.9,85.6,89.2,85.6,89.9,91.2,85,87.6,81.4,89.9,79.7,73.5,74.8,79.4,79.1,80.7,81,77.4,77.4,73.5,78.4,70.5,74.1,70.5,76.8,64,65.9,68.9,67.3,73.5,78.1,70.9,73.5,72.2,67.6,70.2,69.6,68.2,64.3,68.9,75.1,70.2,77.8,73.2,69.2,60.4,70.9,62.7,63.0,61.0,71.9,68.2

|y2=109.6,119.1,99.4,109.9,85.6,96.8,97.4,94.5,90.6,91.2,87.6,95.1,90.9,81.7,90.6,95.1,72.2,89.6,88.3,76.1,77.4,87.6,84.6,70.9,72.5,84.6,71.5,75.1,88.3,65.6,76.1,81,70.5,77.8,78.4,70.9,83.3,80.4,76.8,82.3,85.3,81.4,72.8,85,88.3,77.8,79.1,71.5,83.3,78.7,73.5,81.0,64.0,71.9,72.2,91.9

|y3=94.2,74.8,93.5,86.3,91.2,75.1,83,77.8,84.6,92.8,82,81.7,74.8,97.8,64.6,57.1,74.5,72.5,74.1,85.6,91.9,75.5,75.5,72.8,82.7,65.3,77.8,58.1,69.2,62.7,59.7,63,64,72.8,81,69.2,73.2,66.9,57.4,65.3,50.5,59.1,51.8,51.5,64.6,63.6,76.8,73.2,56.4,53.5,61.7,52.8,59.1,54.8,68.9,53.5

}}

}}

Despite land-use planning and export of treated sewage effluent from the basin, the lake is becoming increasingly eutrophic (having an excessive richness of nutrients), with primary productivity increasing by more than 5% annually, and clarity decreasing at an average rate of {{convert|0.25|m|ft|order=flip}} per year.{{cite web|author=Lahontan Regional Water Quality Board|title=Lake Tahoe Basin Characterization & Assessment of Exemplary Programs for Water Quality Crediting and Trading Feasibility Analysis |url=http://www.enviroincentives.com/Tahoe%20Crediting_Trading%20Characterization%20and%20Cases%20draft%20v1.1.pdf |archive-url=https://web.archive.org/web/20120426023041/http://www.enviroincentives.com/Tahoe%20Crediting_Trading%20Characterization%20and%20Cases%20draft%20v1.1.pdf|archive-date=April 26, 2012|website=Water Quality Crediting and Trading Feasibility Study|publisher=Kieser and Associates|access-date=December 6, 2011 |url-status=dead}} Until the early 1980s, nutrient-limitation studies showed that primary productivity in the lake was nitrogen-limited. Now, after a half-century of accelerated nitrogen input (much of it from direct atmospheric deposition), the lake is phosphorus limited. Theodore Swift et al.,{{cite journal|first1=Theodore J|last1=Swift|first2=Joaquim|last2=Perez-Losada|first3=S. Geoffrey|last3=Schladow|first4=John E|last4=Reuter|first5=Alan D|last5=Jassby|first6=Charles R|last6=Goldman|title=Water clarity modeling in Lake Tahoe: Linking suspended matter characteristics to Secchi depth|journal=Aquat. Sci.|volume=68|year=2006|issue=1 |pages=1–15|doi=10.1007/s00027-005-0798-x|bibcode=2006AqSci..68....1S |s2cid=37395769}} concluded that "suspended inorganic sediments and phytoplanktonic algae both contribute significantly to the reduction in clarity, and that suspended particulate matter, rather than dissolved organic matter, are the dominant causes of clarity loss." The largest source of fine sediment particles to Lake Tahoe is urban stormwater runoff, constituting 72 percent of the total fine sediment particle load.{{cite web|title=Lake Tahoe Total Maximum Daily Load Report|url=http://www.waterboards.ca.gov/lahontan/water_issues/programs/tmdl/lake_tahoe/docs/tmdl_rpt_nov2010.pdf|publisher=California Regional Water Quality Control Board, Lahontan Region|year=2010}} Recent research has shown that the urban uplands also provide the largest opportunity to reduce fine sediment particle and phosphorus contributions to the lake. Historic clarity of approximately {{convert|30|m|ft|order=flip}} can be achieved with total reduction of approximately 75 percent from urban sources.{{cite journal|last=Sahoo |first=G. B. |author2=Schladow, S. G. |author3=Reuter, J. E. |journal=Water Resources Research |year=2010 |volume=46 |doi=10.1029/2009WR008447 |url=http://www.agu.org/pubs/crossref/2010/2009WR008447.shtml |title=Effect of sediment and nutrient loading on Lake Tahoe optical conditions and restoration opportunities using a newly developed lake clarity model |issue=10 |pages=n/a |bibcode=2010WRR....4610505S |s2cid=140172942 |url-status=dead |archive-url=https://web.archive.org/web/20120120034206/http://www.agu.org/pubs/crossref/2010/2009WR008447.shtml |archive-date=January 20, 2012 }}

Historically, the clarity of Lake Tahoe continued to decrease through 2010, when the average Secchi depth, {{convert|64.4|ft|m}}, was the second lowest ever recorded (the lowest was {{convert|64.1|ft|m}} in 1997). This represented a decrease of {{convert|3.7|ft|m}} from the previous year.{{cite web|url=http://terc.ucdavis.edu/stateofthelake/StateOfTheLake2011.pdf|title=Tahoe: State of the Lake Report|year=2011 |publisher=UC Davis Tahoe Environmental Research Center |archive-url=https://web.archive.org/web/20111208070952/http://terc.ucdavis.edu/stateofthelake/StateOfTheLake2011.pdf |archive-date=December 8, 2011 |url-status=dead}} However, the lake's clarity increased from 2011 to 2014, improving by nearly 20 percent.{{cite web|url=http://www.sacbee.com/2013/02/28/5224182/lake-tahoes-clarity-shows-gains.html|archive-url=https://web.archive.org/web/20130306111953/http://www.sacbee.com/2013/02/28/5224182/lake-tahoes-clarity-shows-gains.html|archive-date=March 6, 2013|title=Lake Tahoe's clarity shows gains for a second year}}{{Cite web|url=https://www.rgj.com/story/tech/environment/2015/04/07/drought-helps-boost-lake-tahoes-clarity/25416091/|title=Drought helps boost Lake Tahoe's clarity|first=Jeff|last=DeLong|website=Reno Gazette Journal|access-date=February 15, 2022}}

A water quality study by the Lahontan Water Quality Control Board and the Nevada Division of Environmental Protection{{cite web|archive-url=https://web.archive.org/web/20150924063247/http://ndep.nv.gov/bwqp/file/LTTMDL_NDEP_Final.PDF|archive-date=September 24, 2015|url=http://ndep.nv.gov/bwqp/file/LTTMDL_NDEP_Final.PDF|title=Lake Tahoe Total Maximum Daily Load for Fine Sediment Particles, Nitrogen and Phosphorus|first=Colleen|last=Cripps|publisher=Nevada Department of Conservations and Natural Resources|date=August 3, 2011}} determined the largest source of fine sediment particles: 71 percent is developed area (urban) erosion and run-off, much of it associated with transportation infrastructure and services.{{cite web|url=http://ndep.nv.gov/bwqp/tahoe3.htm|archive-url=https://web.archive.org/web/20110916102925/http://ndep.nv.gov/bwqp/tahoe3.htm|archive-date=September 16, 2011|title=Final EPA Approved Lake Tahoe TMDL Report|publisher=Nevada Bureau of Water Quality Planning}}

Lake Tahoe is a tributary watershed drainage element within the Truckee River Basin, and its sole outlet is the Truckee River, which continues on to discharge to Pyramid Lake. Because of the sensitivity of Truckee River water quality (involving two protected species, the cui-ui{{cite iucn |author=NatureServe |date=2014 |title=Chasmistes cujus |volume=2014 |page=e.T4586A3003395 |doi=10.2305/IUCN.UK.2014-3.RLTS.T4586A3003395.en |access-date=November 11, 2021}} Listed as Critically Endangered (CR B1+2b v2.3) sucker fish and the Lahontan cutthroat trout), this drainage basin has been studied extensively. The primary investigations were stimulated by the U.S. Environmental Protection Agency, which funded the development of the DSSAM model to analyze water quality below Lake Tahoe.

Lake Tahoe never freezes.{{cite web |url=http://www.skiheavenly.com/lake-tahoe/tahoe-town-facts.aspx |title=Lake Tahoe Facts |access-date=October 3, 2010 |publisher=Heavenly Mountain Resort |archive-url=https://web.archive.org/web/20110106193151/http://www.skiheavenly.com/lake-tahoe/tahoe-town-facts.aspx |archive-date=January 6, 2011 |url-status=dead }} Since 1970, it has mixed to a depth of at least {{convert|1300|ft|abbr=on}} a total of six or seven times. Dissolved oxygen is relatively high from top to bottom. Analysis of the temperature records in Lake Tahoe has shown that the lake warmed (between 1969 and 2002) at an average rate of {{cvt|0.015|C-change|order=flip|}} per year. The warming is caused primarily by increasing air temperatures, and secondarily by increasing downward long-wave radiation. The warming trend is reducing the frequency of deep mixing in the lake and may have important effects on water clarity and nutrient cycling.{{Cite book |date=2022 |title=Scientific Investigations Report |chapter=Seasonal and long-term clarity trend assessment of Lake Tahoe, California–Nevada |language=en |doi=10.3133/sir20225070|last1=Naranjo |first1=Ramon C. |last2=Work |first2=Paul |last3=Heyvaert |first3=Alan |last4=Schladow |first4=Geoffrey |last5=Cortes |first5=Alicia |last6=Watanabe |first6=Shohei |last7=Tanaka |first7=Lidia |last8=Elci |first8=Sebnem }}

{{See also|List of Lake Tahoe inflow streams}}

Since the 1960s, the Lake's food web and zooplankton populations have undergone major changes. In 1963–65, opossum shrimp (Mysis diluviana) were introduced to enhance the food supply for the introduced Kokanee salmon (Oncorhynchus nerka).{{Cite news|url=https://www.latimes.com/environment/story/2019-09-06/lake-tahoe-clarity-shrimp-pollution|title=Will Lake Tahoe's invasive shrimp become the next mass-market health supplement?|date=September 7, 2019|newspaper=Los Angeles Times|first=Louis |last=Sahagun|language=en-US|access-date=September 8, 2019}} The shrimp began feeding on the lake's cladocerans (Daphnia and Bosmina), and their populations virtually disappeared by 1971.{{cite journal|author=Goldman, C.R.|author2=M.D. Morgan|author3=S.T. Threlkeld|author4=N. Angeli|title=A Population Dynamics Analysis of the Cladoceran Disappearance from Lake Tahoe, California-Nevada|journal=Limnology and Oceanography|volume=24|pages=289–97|year=1979|issue=2|doi=10.4319/lo.1979.24.2.0289|citeseerx=10.1.1.556.6018|bibcode=1979LimOc..24..289G}} The shrimp provide a food resource for salmon and trout, but also compete with juvenile fish for zooplankton. Since the 1970s, the cladoceran populations have somewhat recovered, but not to former levels. Since 2006, goldfish have been observed in the lake, where they have grown to "giant size". An invasive species, they may have descended from former pets which owners dumped, or when used as fishing bait.Laila Kearney. Goldfish influx threatens to cloud pristine Lake Tahoe waters. Reuters February 22, 2013.

The Lake Tahoe area is prone to wildfires, particularly the South Lake Tahoe region. The areas around are heavily forested, with four more times as much understory trees than in recent years. They are some of the most flammable types of trees.{{cite news |last1=Cart |first1=Julie |title='It will not be survivable': Lake Tahoe could be a deathtrap during major wildfires |url=https://thenevadaindependent.com/article/it-will-not-be-survivable-lake-tahoe-could-be-a-deathtrap-during-major-wildfires |access-date=April 15, 2025 |work=The Nevada Independent |date=March 26, 2025}} In June 2007, the Angora Fire burned approximately {{convert|3100|acre|abbr=on}} throughout the South Lake Tahoe area. While the impact of ash on the lake's ecosystem is predicted to be minimal, the impact of potential future erosion is not yet known.{{cite news|title=Raging Tahoe Fire's Roots: 150 Years of Mismanagement|author=Carl T. Hall|newspaper=San Francisco Chronicle|date=June 26, 2007|page=A-1}}

File:Emerald Bay.jpg

File:Secret Beach - Lake Tahoe East Shore.jpg

Construction activities have resulted in a clouding of the lake's blue waters. Currently, the Tahoe Regional Planning Agency is regulating construction along the shoreline{{cite web|url=http://www.trpa.org/default.aspx?tabindex=1&tabid=40 |archive-url=https://web.archive.org/web/20110716131956/http://www.trpa.org/default.aspx?tabindex=1&tabid=40 |archive-date=July 16, 2011 |title=Construction Monitoring |publisher=Tahoe Regional Planning Agency |url-status=dead }} (and has won two Federal Supreme Court battles over recent decisions).{{cite court |litigants=Tahoe-Sierra Preservation Council, Inc. v. Tahoe Regional Planning Agency |vol=535|reporter=U.S.|opinion=302 |court=Supreme Court of the United States |date=2002 |url=https://www.law.cornell.edu/supct/html/00-1167.ZS.html |access-date=July 13, 2018 }} These regulations are unpopular with many residents, especially those in the Tahoe Lakefront Homeowners Association.{{cite web|title=About TLOA|url=http://www.tloa.net/pages/tloa-home/about-tloa.php|archive-url=https://web.archive.org/web/20120426023044/http://www.tloa.net/pages/tloa-home/about-tloa.php|archive-date=April 26, 2012|publisher=Tahoe Lakefront Homeowners Association|access-date=December 6, 2011}}

The League to Save Lake Tahoe (Keep Tahoe Blue) has been an environmental watchdog in the Lake Tahoe Basin for 50 years. Founded when a proposal to build a four-lane highway around the lake—with a bridge over the entrance to Emerald Bay—was proposed in 1957, the League has opposed many development projects in the area, which it alleges were environmentally harmful. The League embraces responsible and diversified use of the Lake's resources while protecting and restoring its natural attributes.{{cite web |url=http://www.keeptahoeblue.org/about-us/history |title=History of The League to Save Lake Tahoe |publisher=Keep Tahoe Blue |access-date=September 25, 2008}}

Since 1980, the Lake Tahoe Interagency Monitoring Program (LTIMP) has been measuring stream discharge and concentrations of nutrients and sediment in up to 10 tributary streams in the Lake Tahoe Basin, California-Nevada. The objectives of the LTIMP are to acquire and disseminate the water quality information necessary to support science-based environmental planning and decision making in the basin. The LTIMP is a cooperative program with support from 12 federal and state agencies with interests in the Tahoe Basin. This data set, together with more recently acquired data on urban runoff water quality, is being used by the Lahontan Regional Water Quality Control Board to develop a program (mandated by the Clean Water Act) to limit the flux of nutrients and fine sediment to the Lake.

Microplastics were found for the first time in 2019 by the Desert Research Institute. This pollution in the water could be local or from locations around the world as particles from discarded plastic products can be transported long distances through the atmosphere by wind, rain and falling snow.{{Cite news|url=https://www.latimes.com/environment/story/2019-08-26/lake-tahoe-microplastic-pollution-detected|title=Microplastics are found in Lake Tahoe's waters for first time ever|last=Sahagun|first=Louis|date=August 26, 2019|newspaper=Los Angeles Times|language=en-US|access-date=August 27, 2019}} In 2023, updated measurements of microplastics in the lake revealed that Lake Tahoe contained some of the highest microplastic pollution concentrations found among 38 lakes and reservoirs measured.{{Cite journal |last1=Nava |first1=Veronica |last2=Chandra |first2=Sudeep |last3=Aherne |first3=Julian |last4=Alfonso |first4=María B. |last5=Antão-Geraldes |first5=Ana M. |last6=Attermeyer |first6=Katrin |last7=Bao |first7=Roberto |last8=Bartrons |first8=Mireia |last9=Berger |first9=Stella A. |last10=Biernaczyk |first10=Marcin |last11=Bissen |first11=Raphael |last12=Brookes |first12=Justin D. |last13=Brown |first13=David |last14=Cañedo-Argüelles |first14=Miguel |last15=Canle |first15=Moisés |date=July 2023 |title=Plastic debris in lakes and reservoirs |url=https://www.nature.com/articles/s41586-023-06168-4 |journal=Nature |language=en |volume=619 |issue=7969 |pages=317–322 |doi=10.1038/s41586-023-06168-4 |pmid=37438590 |bibcode=2023Natur.619..317N |issn=1476-4687|hdl=10198/19283 |s2cid=259835082 |hdl-access=free }}{{Cite web |last=Spencer |first=Cari |date=2023-07-14 |title=Lake Tahoe has higher concentration of microplastics than ocean trash heap |url=https://www.latimes.com/california/story/2023-07-14/lake-tahoe-troubling-concentration-microplastics |access-date=2023-07-29 |website=Los Angeles Times |language=en-US}}{{Cite news |last=Thomas |first=Gregory |date=12 July 2023 |title=Lake Tahoe has alarmingly high concentrations of microplastics, study finds |work=The San Francisco Chronicle |url=https://www.sfchronicle.com/tahoe/article/plastic-pollution-18189271.php}} Restoring the Lake Depths Foundation uses a BlueROV2 to survey the bottom of Lake Tahoe in an organized grid pattern to remove microplastics and trash.{{Cite web |last=Dailey |first=Scott |date=2022-08-23 |title=Peninsula residents use high-tech 'gripper' to snatch junk from bottom of Lake Tahoe |url=https://climaterwc.com/2022/08/23/peninsula-residents-use-high-tech-gripper-to-snatch-junk-from-bottom-of-lake-tahoe/ |access-date=2024-01-18 |website=Climate Online |language=en-US}}

The UC Davis Tahoe Environmental Research Center is dedicated to research, education and public outreach, and to providing objective scientific information for restoration and sustainable use of the Lake Tahoe Basin.{{Cite web|url=https://tahoe.ucdavis.edu/|title=Tahoe Environmental Research Center|website=Tahoe.ucdavis.edu|access-date=February 15, 2022}} Each year, it produces a "State of the Lake" report, assessing changes such as lake clarity, nutrients and particles, or meteorology around the lake.

File:Lake Tahoe Near Cave Rock.jpg

Much of the area surrounding Lake Tahoe is devoted to the tourism industry and there are many restaurants, ski slopes, golf courses and casinos catering to visitors.{{Cite web |last=Lovato |first=Kimberley |date=September 6, 2023 |title=Tourism: The monster that feeds and eats away at Lake Tahoe |url=https://www.cnn.com/travel/lake-tahoe-tourism-struggles/index.html |access-date=2023-09-06 |website=CNN |language=en}} The Nevada side of Tahoe provides additional tourist amenities due to Nevada's legal gambling, lower regulatory environment and tax burden than California.{{Cite web |date=2020-06-04 |title=South Lake Tahoe Hotels Struggle As Nevada Casinos Reopen - CBS Sacramento |url=https://www.cbsnews.com/sacramento/news/south-lake-tahoe-hotels-nevada-casinos/ |access-date=2024-05-21 |website=CBS News |language=en-US}}{{Cite web |last=Belleci |first=Don Kanare and Sabrina |date=2018-07-08 |title=Benefits of living on the Nevada side of Tahoe |url=https://www.tahoedailytribune.com/news/benefits-of-living-on-the-nevada-side-of-tahoe/ |access-date=2024-05-21 |website=www.tahoedailytribune.com |language=en-US}} Nevada also had fewer restrictions than California during the COVID-19 Pandemic which resulted in California hotels suffering economically while the Nevada casinos were described as "living large".{{Cite web |date=2020-12-12 |title=Lake Tahoe travel: CA side closing for weeks after region enters shelter-in-place order |url=https://abc7news.com/lake-those-closing-down-to-tourists-tahoe-is-shutting-on-friday-again-tourist/8706972/ |access-date=2024-05-21 |website=ABC7 San Francisco |language=en}}

Image:Tahoe.JPGs overlooking Lake Tahoe]]

Image:LakeTahoe-gondola.jpg

During ski season, thousands of people from all over Nevada and California, including Reno, Las Vegas, Los Angeles, San Diego, San Francisco, and Sacramento, flock to the slopes for downhill skiing. Lake Tahoe, in addition to its panoramic beauty, is well known for its blizzards.

Lake Tahoe is home to 15 ski areas.{{Cite web |last=Silgalis |first=Alex |date=2024-01-30 |title=Lake Tahoe Ski Resorts Map Of 14 Ski Resorts & 1 Training Center |url=https://localfreshies.com/lake-tahoe-ski-resorts-map/ |access-date=2024-10-02 |website=Local Freshies |language=en-US}} Some of the major ski areas are:

• Heavenly Mountain Resort: the largest ski area in California and Nevada,{{citation needed|date=September 2021}} located near Stateline on the South Shore
• Palisades Tahoe: the second largest ski area,{{citation needed|date=September 2021}} known for its hosting of the 1960 Winter Olympics, located near Tahoe City
• Alpine Meadows: a medium-sized ski area on the north shore only a few miles from Olympic Valley and operated as part of Palisades Tahoe
• Diamond Peak: a small ski area located in Incline Village, Nevada
• Northstar California: a popular north shore ski area, known for its consistently rated top 10 North American terrain park{{Cite web |date=January 20, 2017 |title=North America's Top 10 Terrain Parks |url=https://snowbrains.com/north-americas-top-10-terrain-parks/ |access-date=March 28, 2022 |website=SnowBrains |language=en-US}}
• Kirkwood Mountain Resort: a ski area which gets more snow than any other ski area in the Tahoe region
• Sierra-at-Tahoe: a medium-sized south shore ski area
• Boreal Mountain Resort: a small ski area on Donner Pass
• Sugar Bowl Ski Resort: a medium-sized ski area on Donner Pass
• Donner Ski Ranch: a very small ski area on Donner Pass
• Homewood Mountain Resort: a medium-sized ski area on the west shore
• Mount Rose Ski Resort: a medium-sized ski area north-east of the Lake, on Slide Mountain

The majority of the ski resorts in the Lake Tahoe region are on the northern end of the lake, near Truckee, California and Reno, Nevada. Kirkwood, Sierra-at-Tahoe and Heavenly are located on the southern side of the lake, {{convert|55|-|75|mi|km|-1}} from Reno.

Scattered throughout Tahoe are public and private sled parks. Some, such as Granlibakken, are equipped with rope tows to help sledders get up the hill.

Many ski areas around Tahoe also have snow tubing, such as Olympic Valley. Throughout Tahoe, cross-country skiing, snowmobile riding and snowshoeing are also popular.

The NHL hosted two outdoor games at Lake Tahoe in 2021.{{Cite web|url=https://www.nhl.com/news/nhl-lake-tahoe-hockey-in-the-wilderness/c-321439306|title=NHL Lake Tahoe event bringing hockey to 'the middle of the wilderness'|website=Nhl.com|access-date=February 15, 2022}}

File:A view of Lake Tahoe from Crystal bay.JPG

During late Spring to early Fall, the lake is popular for water sports and beach activities. The two cities most identified with the Lake Tahoe tourist area are South Lake Tahoe, California and the smaller Stateline; smaller centers on the northern shoreline include Tahoe City and Kings Beach.

Other popular activities include parasailing, jet ski rentals, eco-friendly paddle sport rentals and fishing.{{Cite web|url=https://www.fishtahoe.com/getting-on-the-water-in-tahoe/|title=Getting on the Water in Tahoe|date=June 6, 2019|website=Mile High Fishing Charters|language=en-US|access-date=August 25, 2019}} There are rental locations around Lake Tahoe. Kayaking and stand-up paddle boards have also become very popular.

Boating is a primary activity in Tahoe in the summer. The lake is home to one of the most prestigious wooden boat shows in the country, the Lake Tahoe Concours d'Elegance, held every August. There are lake front restaurants all over the lake, most equipped with docks and buoys. There are all sorts of boating events, such as sailboat racing, firework shows over the lake, guided cruises, and more. As an interstate waterway, Lake Tahoe is subject to the United States Coast Guard. Lake Tahoe is home to Coast Guard Station Lake Tahoe.{{cite news |first=Joanna |last= Hartman |title=Tahoe Coast Guard changes command |url=http://www.tahoe.com/article/SS/20070805/NEWS/70805008/0/COMMUNITY06 |archive-url=https://web.archive.org/web/20081207164036/http://www.tahoe.com/article/SS/20070805/NEWS/70805008/0/COMMUNITY06 |archive-date=December 7, 2008 |work=tahoe.com |publisher=Sierra Sun |access-date=October 26, 2008 }}

SCUBA diving is popular at Lake Tahoe, with some dive sites offering dramatic drop-offs or wall dives. Diving at Lake Tahoe is considered advanced due to the increased risk of decompression sickness (DCS) while diving at such a high altitude.{{cite journal |author1=Egi, S. M. |author2=Brubakk, Alf O. |title=Diving at altitude: a review of decompression strategies |journal=Undersea and Hyperbaric Medicine |volume=22 |issue=3 |pages=281–300 |year=1995 |issn=1066-2936 |oclc=26915585 |pmid=7580768 |url=http://archive.rubicon-foundation.org/2194 |access-date=March 11, 2009 |archive-url=https://web.archive.org/web/20110811174838/http://archive.rubicon-foundation.org/2194 |archive-date=August 11, 2011 |url-status=usurped }}{{cite web |url=http://www.tdconline.com/training/specialty/altitude.html |title=Altitude Diving |access-date=October 26, 2008 |archive-date=December 6, 2008 |archive-url=https://web.archive.org/web/20081206173735/http://www.tdconline.com/training/specialty/altitude.html |url-status=dead }}

Fred Rogers became the first person to swim the length of Lake Tahoe in 1955, and Erline Christopherson became the first woman to do so in 1962.{{cite web|url=http://www.tahoedailytribune.com/article/20031029/SPORTS/110290043|title=First person to swim length of Lake Tahoe reflects back on 1955 feat|publisher=Tahoe Daily Tribune|access-date=September 17, 2014}}{{cite web|url=http://www.carsonnow.org/story/08/24/2014/first-woman-swim-length-lake-tahoe-recalls-1962-adventure|title=First woman to swim the length of Lake Tahoe recalls 1962 adventure|publisher=Carson City Nevada News|website=Carson Now|access-date=September 17, 2014}}

File:Honda Africa Twin by Lake Tahoe.jpg

The lake and its scenic environs provide many opportunities for motorcyclists to ride both on and off-road. The most popular circuit that goes around the lake runs clockwise and starts in South Lake Tahoe on the California side.{{Cite web|url=https://tahoesouth.com/explore/featured-blog/articles/tahoe-on-two-wheels/|title=Tahoe on Two Wheels|last=Lovaas|first=Jennifer|date=October 9, 2019|website=Tahoe South}} Riding north via route 89 allows riders to pull over to the right to admire the views without crossing traffic. Continuing onto highway 28 East, and finally, onto US-50 West will complete the full tour. Doing it in reverse allows experiencing the views from a different perspective. Kingsbury Grade (highway 207) is another popular route with local motorcyclists. It is only 11 miles long from South Lake Tahoe to Mottsville and can also be ridden in both directions. Some of the most scenic motorcycling stops and views around the lake:

• Emerald Bay – southwest Lake Tahoe, off Highway 89
• Fallen Leaf Lake – 6 miles southwest of South Lake, via Highway 89
• Zephyr Cove – 6 miles north of South Lake, off Highway 50
• Cave Rock – 9 miles north of South Lake, off Highway 50
• Sand Harbor – northwest Lake Tahoe, off Highway 28
• Kings Beach – North Lake Tahoe, off Highway 28
• Donner Lake – 21 miles north of Lake Tahoe, off I-80

Image:Tahoe Rim Trail SL.jpg]]

There are numerous hiking and mountain biking trails around the lake. They range widely in length, difficulty and popularity. One of the most famous of Tahoe's trails is the Tahoe Rim Trail, a 165-mile (270-km) trail that circumnavigates the lake. Directly to the west of the lake is the Granite Chief Wilderness, which provides great hiking and wilderness camping. Also, to the southwest is the very popular Desolation Wilderness. One of the most popular trailheads used to access these popular destinations is Eagle Lake trailhead, located near Emerald Bay on Tahoe's west shore. The Flume Trail of the east shore is one of Mountain Biking Magazine's Top 10 Trails in the U.S. There are also many paved off-road bicycle paths that meander through communities on all sides of the lake.

Image:Stateline, Nevada.jpg]]

Gambling is legal on the Nevada side of Lake Tahoe. Casinos, each with a variety of slot machines and table games are available. Four are located on the South Shore in Stateline, and four on the North Shore; three in Crystal Bay and one in Incline Village.

When Nevada legalized gambling in 1931, the first casino at the lake had already been open for years. First built on the North Shore in Crystal Bay by Robert Sherman in 1926,{{cite book|last=Moe|first=Al W.|title=The Roots of Reno|url=https://books.google.com/books?id=evsHVs5xvhYC|year=2008|page=65|publisher=Al Moe |isbn=9781439211991}} the Cal-Neva Lodge became the property of Norman Henry Biltz and was sold to Bill Graham and Jim McKay in 1929.

The Cal-Neva was rebuilt after a fire in 1937 and expanded several times, most noticeably in 1969 when the high-rise hotel was built. Along the way, Frank Sinatra owned the property in the early 1960s, shared his cabins with the likes of Sam Giancana and Marilyn Monroe, and sold out at the height of the area's popularity.

Other casinos at the North Shore include the Crystal Bay Club, first built in 1937 as the Ta-Neva-Ho; the defunct Tahoe Biltmore, and the Nugget. The Hyatt Regency is found at Incline Village.

At South Shore, Bill Harrah purchased the Stateline Country Club, which had stood since 1931 and built Harrah's Tahoe. Other casinos include Hard Rock Hotel and Casino Lake Tahoe, Harveys Lake Tahoe, and Bally's Lake Tahoe.

Lake Tahoe can be reached directly by car and bus, and indirectly by train or air. The nearest passenger train service is the Amtrak station in Truckee, and is served by Amtrak's train, the California Zephyr, which runs daily between Chicago and the San Francisco Bay Area. An Amtrak Thruway bus also connects South Lake Tahoe to the Capitol Corridor in Sacramento. The closest scheduled passenger airline service is available via the Reno-Tahoe International Airport (RNO).

The Tahoe Transportation District provides fare-free local mass transit in and around South Lake Tahoe and connects the basin to the Carson Valley and Carson City, and Tahoe Truckee Area Regional Transit (TART) serves the north and northwest shores of the lake, also connecting to Truckee and Amtrak.

Image:Caverock.JPG on US 50]]

Image:50 through South Lake Tahoe by Mark Miller.jpg in South Lake Tahoe]]

Visitors can reach Lake Tahoe under ideal conditions within two hours from the Sacramento area, one hour from Reno or thirty minutes from Carson City. In winter months, chains or snow tires are often necessary to reach Tahoe from any direction. Traffic can be heavy on weekends due to tourists if not also from weather.

The primary routes to Lake Tahoe are on Interstate 80 via Truckee, U.S. Route 50, and Nevada State Route 431 via Reno. Most of the highways accessing and encircling Lake Tahoe are paved two-lane mountain roads. US 50 is a four-lane highway (from the canyon of the South Fork American River at Riverton, over the Sierra Nevada at Echo Summit, and into the Lake Tahoe Basin, is a mainly two-lane road) passing south of the lake and along part of the eastern shore.

California State Route 89 follows the western shore of the lake through the picturesque wilderness and connects camping, fishing and hiking locations such as those at Emerald Bay State Park, DL Bliss State Park and Camp Richardson. Farther along are communities such as Meeks Bay and Tahoe City. Finally, the highway turns away from the lake and heads northwest toward Truckee.

California State Route 28 completes the circuit from Tahoe City around the northern shore to communities such as Kings Beach, Crystal Bay, and into Incline Village, Nevada where the road becomes Nevada State Route 28. Route 28 returns along the eastern shore to US 50 near Spooner Lake.

• Reno-Tahoe International Airport/KRNO (Reno, Nevada)
• Sacramento International Airport/KSMF (Sacramento, California)
• Lake Tahoe Airport/KTVL (South Lake Tahoe, California)
• Truckee-Tahoe Airport/KTRK (Truckee, California)
• Minden–Tahoe Airport/KMEV (Minden, Nevada)

File:Lake Tahoe Community Map.jpg

{|

|valign=top|

;Placer County

• Carnelian Bay #3
• Dollar Point #4
• Kings Beach #1
• Sunnyside-Tahoe City #5
• Tahoe Vista #2
• Tahoma (partially in El Dorado County) #6

;El Dorado County

• South Lake Tahoe #7
• Fallen Leaf Lake
• Tahoma (partially in Placer County) #6
• Tahoe Keys

|width=30|

|valign=top|

• Carson City #14

;Douglas County

• Glenbrook #13
• Lakeridge #11
• Logan Creek #12
• Round Hill Village #8
• Skyland #10
• Stateline #17
• Zephyr Cove #9

;Washoe County

• Crystal Bay #16
• Incline Village #15

|}

Lake Tahoe is home to various legends that have been passed down through local Native American traditions and other sources. These include stories about Water Babies, the Ong, Tahoe Tessie, and the Ghosts of Fannette Island.

{{Main|Water Babies (folklore)}}

In Washoe tradition, Water Babies are powerful spirits believed to inhabit bodies of water including those of Lake Tahoe. They were thought to have the ability to cause harm or even death. Washoe healers would visit sacred places, such as Cave Rock, to consult with the Water Babies, bringing offerings in the hope of gaining their favor and strength.{{cite web |title=Tahoe Lore: Underneath the Surface |author=Quintin Mills |date=April 9, 2024 |url=https://www.powder.com/region-california/tahoe-lore |website=Powder |access-date=September 16, 2024}}{{cite web |title=The Washoe Tribe and Their History Around Lake Tahoe |url=https://visitlaketahoe.com/attractions/the-washoe-tribe-and-their-history-around-lake-tahoe/ |website=Visit Lake Tahoe |access-date=September 16, 2024}}

{{Main|Ong (Washoe folklore)}}

The Ong is a figure from Washoe legend, described as a large bird that lived in Lake Tahoe. It was said to prey on animals and humans. One legend recounts that a young man named Tahoe was captured by the Ong but managed to escape by feeding it poisoned arrowheads. The bird was believed to have died and sunk into the lake.{{cite journal |title=Lake Legends of Wa She Shu |author=Allison Jones |date=November–December 2018 |journal=Northwoods Tahoe |publisher=Community Media LLC |url=https://issuu.com/communityinkinc/docs/northwoodstahoe_novdec_finalproof2/s/27883 |access-date=September 16, 2024}}

{{Main|Tahoe Tessie}}

Tahoe Tessie is a reported creature said to live in Lake Tahoe. Descriptions of Tessie resemble those of other lake monsters, such as the Loch Ness Monster, with many believing it to be a large aquatic animal, potentially a sturgeon.{{cite web |title=4 Fun Things You May Not Know About Lake Tahoe |url=https://visitlaketahoe.com/attractions/4-fun-things-you-may-not-know-about-lake-tahoe/ |website=Visit Lake Tahoe |access-date=September 16, 2024}}

Fannette Island in Emerald Bay is purportedly haunted by the ghost of Captain Richard Barter, a man who lived on the island in the late 1800s. He died while returning to the island in 1873, and some local stories claim that his ghost can be seen wandering the island.

The Ponderosa Ranch of the TV series Bonanza was formerly located on the Nevada side of Lake Tahoe.{{cite web |url= http://www.tvland.com/shows/bonanza/ |archive-url= https://web.archive.org/web/20030902210349/http://www.tvland.com/shows/bonanza/ |url-status= dead |archive-date= September 2, 2003 |title= Bonanza |access-date=October 31, 2008 |website=TVLand |publisher=Viacom International Inc. }} The opening sequence of the TV series was filmed at the McFaul Creek Meadow, with Mount Tallac in the background. In September 2004 the Ponderosa Ranch closed its doors, after being sold to developer David Duffield for an undisclosed price.{{cite web |url=http://www.tvacres.com/farms_ranches_ponderosa.htm |archive-url=https://archive.today/20120913044825/http://www.tvacres.com/farms_ranches_ponderosa.htm |archive-date=September 13, 2012 |title=Ponderosa Ranch |website=TV Acres |access-date=November 15, 2011 |url-status=dead }}{{cite web |url=http://gocalifornia.about.com/cs/laketahoe/a/ponderosa.htm |title=Bonanza – Ponderosa Ranch |website=GoCalifornia.about.com |date=September 27, 2004 |access-date=November 15, 2011 |archive-date=July 1, 2016 |archive-url=https://web.archive.org/web/20160701090152/http://gocalifornia.about.com/cs/laketahoe/a/ponderosa.htm |url-status=dead }}

The 1974 film The Godfather Part II used the lakeside estate Fleur de Lac as the location of several scenes, including the elaborate First Communion celebration, the Senator's shakedown attempt of Michael, the assassination attempt on Michael, Michael disowning Fredo, Carmela Corleone's funeral, Fredo's execution while fishing, and the closing scene of Michael sitting alone outside. Fleur de Lac, on the western California shore of Lake Tahoe, was formerly the Henry Kaiser estate. The surrounding lakeside area has been developed into a private gated condominium community and some of the buildings of the "Corleone compound" still exist, including the boathouse.{{cite web |url=http://www.fdlestates.com |title=Fleur de Lac Estates |publisher=Fleur du Lac Estates Home Owners Association |access-date=May 8, 2012}}

The 2014 film Last Weekend, starring Patricia Clarkson and directed by Tom Dolby and Tom Williams, used the west shore lakefront home of Ray and Dagmar Dolby as the primary location for its interiors and exteriors. The house, built in 1929, was also the site for the exteriors for A Place in the Sun, starring Elizabeth Taylor and Montgomery Clift.{{cite web|url= http://www.sfgate.com/default/article/Last-Weekend-revives-1951-film-site-4087674.php |title= 'Last Weekend' revives 1951 film site |date= December 3, 2012 |publisher= San Francisco Chronicle |access-date= June 1, 2014}} The 1988 film Things Change was also filmed here.Barth, Jack (1991). Roadside Hollywood: The Movie Lover's State-By-State Guide to Film Locations, Celebrity Hangouts, Celluloid Tourist Attractions, and More. Contemporary Books. p. 2. {{ISBN|978-0809243266}}.

British rock band A's song "Here We Go Again (I Love Lake Tahoe)" and the accompanying music video centers around the band's love for the lake and the surrounding holiday locations.

The lake is mentioned in the lyrics to the song "Unfair" by cult indie rock band Pavement.

The lake is the setting for Kate Bush's song of the same name from the album 50 Words for Snow. In the song, a woman who drowned in the lake is reunited with her beloved dog in the afterlife.{{cite web |url=https://www.katebushencyclopedia.com/lake-tahoe |title= Lake Tahoe |access-date= October 19, 2022 | website=Kate Bush Encyclopedia|date= August 17, 2017 }} The song was accompanied by a video written and directed by Bush.

{{portal|Lakes|California|Nevada}}

{{div col}}

• Clear Lake
• Fannette Island
• List of dams and reservoirs in California
• List of Lake Tahoe inflow streams
• List of lakes by volume
• List of lakes in California
• List of largest reservoirs of California
• Mono Lake
• Rubicon Trail
• Washoe Lake

{{div col end}}

{{Reflist|35em}}

{{Refbegin|35em}}

• {{cite web |url= http://www.tahoe.com/article/20060201/COMMUNITY07/11113035 |archive-url= https://web.archive.org/web/20100402124142/http://www.tahoe.com/article/20060201/COMMUNITY07/11113035 |archive-date= April 2, 2010|title=The naming of Tahoe's mountains | access-date=November 1, 2008 |website=Tahoe.com |first =Andrew |last=Becker }}
• {{cite journal |doi= 10.2134/jeq1989.00472425001800010015x |last= Byron |first=Earl R. |author2=Charles R. Goldman |date=January 1, 1989|title=Land-Use and Water Quality in Tributary Streams of Lake Tahoe, California-Nevada |journal=Journal of Environmental Quality |volume=18 |issue= 1|pages=84–88 |bibcode= 1989JEnvQ..18...84B }}
• {{cite journal |last=Chang |first=C. C. Y. |author2=J. S. Kuwabara|author3=S. P. Pasilis |year=1992 |title= Phosphate and iron limitation of phytoplankton biomass in Lake Tahoe|journal=Canadian Journal of Fisheries and Aquatic Sciences |volume=49|issue= 6|pages=1206–15 |doi=10.1139/f92-136 }}
• {{cite journal | last1 = Coats | first1 = R. N. | last2 = Goldman | first2 = C. R. | year = 2001 | title = Patterns of nitrogen transport in streams of the Lake Tahoe basin, California-Nevada | journal = Water Resour. Res. | volume = 37 | issue = 2| pages = 405–15 | doi=10.1029/2000wr900219| bibcode = 2001WRR....37..405C | s2cid = 43088599 | doi-access = free }}
• Coats, R. N., J. Perez-Losada, G. Schladow, R. Richards and C. R. Goldman. 2006. The Warming of Lake Tahoe. Climatic Change (In Press).
• Crippen, J. R., and B. R. Pavelka. 1970. The Lake Tahoe basin, California-Nevada U.S. Geological Survey Water-Supply Paper 1972.
• {{cite journal |url=https://pubs.er.usgs.gov/publication/wri994043 |title= The bathymetry of Lake Tahoe, California-Nevada |first=James V. |last=Gardner |author2=Larry A. Mayer |author3=John Hughes-Clarke |date=January 16, 2003 |website=Open-File Report 98-509 |publisher=U.S. Geological Survey|doi= 10.3133/wri994043 |access-date=November 1, 2008}}
• {{cite journal | last1 = Goldman | first1 = C. R. | last2 = Jassby | first2 = A. | last3 = Powell | first3 = T. | year = 1989 | title = Interannual fluctuations in primary production: meteorological forcing at two subalpine lakes | journal = Limnol. Oceanogr. | volume = 34 | issue = 2| pages = 310–23 | doi=10.4319/lo.1989.34.2.0310| bibcode = 1989LimOc..34..310G | s2cid = 1812168 | doi-access = free }}
• {{cite journal | last1 = Goldman | first1 = C. R. | last2 = Jassby | first2 = A. D. | last3 = Hackley | first3 = S. H. | year = 1993 | title = Decadal, interannual, and seasonal variability in enrichment bioassays at Lake Tahoe, California-Nevada, USA | journal = Can. J. Fish. Aquat. Sci. | volume = 50 | issue = 7| pages = 1489–96 | doi=10.1139/f93-170}}
• {{cite journal | last1 = Hatch | first1 = L. K. | last2 = Reuter | first2 = J. E. | last3 = Goldman | first3 = C. R. | year = 2001 | title = Stream phosphorus transport in the Lake Tahoe Basin, 1989–1996 | journal = Environmental Monitoring and Assessment | volume = 69 | issue = 1| pages = 63–83 | pmid = 11393545 | doi=10.1023/a:1010752628576| s2cid = 22155734 }}
• {{cite book | title=Lake Tahoe's West Shore | publisher=Arcadia Publishing | author=Jensen, Carol A. | author2 = North Lake Tahoe Historical Society | year=2012 | location=Charleston, S.C. | isbn = 9780738588919}}
• {{cite journal | last1 = Jassby | first1 = A. D. | last2 = Goldman | first2 = C. R. | last3 = Powell | first3 = T. M. | year = 1992 | title = Trend, seasonality, cycle, and irregular fluctuations in primary productivity at Lake Tahoe, California-Nevada, USA | journal = Hydrobiologia | volume = 246 | issue = 3| pages = 195–203 | doi=10.1007/bf00005697| s2cid = 43204458 }}
• {{cite journal | last1 = Jassby | first1 = A. D. | last2 = Reuter | first2 = J. E. | last3 = Axler | first3 = R. P. | last4 = Goldman | first4 = C. R. | last5 = Hackley | first5 = S. H. | year = 1994 | title = Atmospheric deposition of nitrogen and phosphorus in the annual nutrient load of Lake Tahoe (California-Nevada) | journal = Water Resour. Res. | volume = 30 | issue = 7| pages = 2207–16 | doi=10.1029/94wr00754| bibcode = 1994WRR....30.2207J }}
• {{cite journal | last1 = Jassby | first1 = A. D. | last2 = Goldman | first2 = C. R. | last3 = Reuter | first3 = J. E. | year = 1995 | title = Long-term change in Lake Tahoe (California-Nevada, U.S.A.) and its relation to atmospheric deposition of algal nutrients | journal = Arch. Hydrobiol. | volume = 135 | pages = 1–21 | doi = 10.1127/archiv-hydrobiol/135/1995/1 }}
• {{cite journal | last1 = Jassby | first1 = A. D. | last2 = Goldman | first2 = C. R. | last3 = Reuter | first3 = J. E. | last4 = Richards | first4 = R. C. | year = 1999 | title = Origins and scale dependence of temporal variability in the transparency of Lake Tahoe, California-Nevada | journal = Limnol. Oceanogr. | volume = 44 | issue = 2| pages = 282–94 | doi=10.4319/lo.1999.44.2.0282| bibcode = 1999LimOc..44..282J | s2cid = 18427777 | doi-access = free }}
• {{cite journal | last1 = Jassby | first1 = A. | last2 = Reuter | first2 = J. | last3 = Goldman | first3 = C. R. | year = 2003 | title = Determining long-term water -quality change in the presence of climate variability: Lake Tahoe (U.S.A.) | journal = Can. J. Fish. Aquat. Sci. | volume = 60 | issue = 12| pages = 1452–61 | doi=10.1139/f03-127}}
• {{cite journal | last1 = Leonard | first1 = R. L. | last2 = Kaplan | first2 = L. A. | last3 = Elder | first3 = J. F. | last4 = Coats | first4 = R. N. | last5 = Goldman | first5 = C. R. | year = 1979 | title = Nutrient Transport in Surface Runoff from a Subalpine Watershed, Lake Tahoe Basin, California | journal = Ecological Monographs | volume = 49 | issue = 3| pages = 281–310 | doi=10.2307/1942486| jstor = 1942486 | bibcode = 1979EcoM...49..281L }}
• Nagy, M., 2003. Lake Tahoe Basin Framework Study Groundwater Evaluation Lake Tahoe Basin, California and Nevada. U.S. Army Corps of Engineers, Sacramento, CA.
• {{cite journal | last1 = Naslas | first1 = G. D. | last2 = Miller | first2 = W. W. | last3 = Blank | first3 = R. R. | last4 = Gifford | first4 = G. F. | year = 1994 | title = Sediment, nitrate, and ammonium in surface runoff from two Tahoe basin soil types | journal = Water Resour. Bull. | volume = 30 | issue = 3| pages = 409–17 | doi=10.1111/j.1752-1688.1994.tb03300.x| bibcode = 1994JAWRA..30..409N }}
• {{cite journal | last1 = Richards | first1 = R. C. | last2 = Goldman | first2 = C. R. | last3 = Byron | first3 = E. | last4 = Levitan | first4 = C. | year = 1991 | title = The mysids and lake trout of Lake Tahoe: A 25-year history of changes in the fertility, plankton, and fishery of an alpine lake | journal = Am. Fish. Soc. Symp. | volume = 9 | pages = 30–38 }}
• Sahoo, G. B., S. G. Schladow and J. E. Reuter, 2010. Effect of sediment and nutrient loading on Lake Tahoe optical conditions and restoration opportunities using a newly developed lake clarity model
• {{cite journal | last1 = Schuster | first1 = S. | last2 = Grismer | first2 = M. E. | year = 2004 | title = Evaluation of water quality projects in the Lake Tahoe Basin | journal = Environmental Monitoring and Assessment | volume = 90 | issue = 1–3| pages = 225–42 | doi=10.1023/b:emas.0000003591.52435.8d| pmid = 15887374 | bibcode = 2004EMnAs..90..225S | s2cid = 23273050 }}
• Scott, E. B. 1957. The Saga of Lake Tahoe. Early Lore and History of the Lake Tahoe Basin

{{Refend}}

{{sister project links|auto=1}}

• [https://web.archive.org/web/20071028100430/http://tahoe.usgs.gov/ Lake Tahoe Data Clearinghouse] – USGS/Western Geographic Science Center
• [https://www.epa.gov/lake-tahoe US EPA's Lake Tahoe webpage]
• [https://www.truckeeriverwc.org/ Truckee River Watershed Council]
• [http://tinsweb.org/ Tahoe Institute for Natural Science]
• [https://web.archive.org/web/20080329183429/http://remote.ucdavis.edu/tahoe_location.asp Lake Tahoe remote Meteorological Data Sites]
• [https://web.archive.org/web/20071019214255/http://endeavor.des.ucdavis.edu/newcara/basin.asp?cara_id=56 Lake Tahoe Watershed]- California Rivers Assessment database
• [http://contentdm.library.unr.edu/cdm/search/collection/ltresources Lake Tahoe Resource] {{Webarchive|url=https://web.archive.org/web/20150905102413/http://contentdm.library.unr.edu/cdm/search/collection/ltresources |date=September 5, 2015 }}, University of Nevada, Reno Libraries
• [https://web.archive.org/web/20151018053432/http://contentdm.library.unr.edu/explore/ILTExplore/ILT-home.html Images of Lake Tahoe], University of Nevada, Reno Libraries
• [https://tahoe.ucdavis.edu UC Davis Tahoe Environmental Research Center]

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