Trask River

{{Use American English|date=February 2025}}

{{Infobox river

| name = Trask River

| name_native =

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| image = Trask river at tillamook.jpg

| image_size = 300

| image_caption = Trask River from Oregon Route 131 bridge at Tillamook

| map =

| map_size = 300

| map_caption =

| pushpin_map = USA Oregon

| pushpin_map_size = 300

| pushpin_map_caption= Location of the mouth of the Trask River in Oregon

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Oregon

| subdivision_type3 =

| subdivision_name3 =

| subdivision_type4 = County

| subdivision_name4 = Tillamook County

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| length = {{convert|18|mi|km|abbr=on}}{{cite web | author = United States Geological Survey |title = United States Geological Survey Topographic Map: Trask, The Peninsula, and Tillamook quadrants | publisher = TopoQuest | url = http://www.topoquest.com/map.php?lat=45.439722&lon=-123.611389&datum=nad83&zoom=4 |accessdate = November 19, 2009}} The maps include river-mile markers from mouth to source.

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| discharge1_location= {{convert|10.95|mi|km}} from the mouth

| discharge1_min = {{convert|49|cuft/s|m3/s|abbr=on}}

| discharge1_avg = {{convert|989|cuft/s|m3/s|abbr=on}}

| discharge1_max = {{convert|25800|cuft/s|m3/s|abbr=on}}

| source1 = Northern Oregon Coast Range

| source1_location = Tillamook State Forest, East of Tillamook

| source1_coordinates= {{coord|45|26|23|N|123|36|41|W|display=inline}}{{cite web | work = Geographic Names Information System (GNIS) | publisher = United States Geological Survey | date = November 28, 1980 | url ={{Gnis3|1151402}} | title = Trask River | accessdate = November 19, 2009 }}

| source1_elevation = {{convert|281|ft|abbr=on}}Source elevation derived from Google Earth search using GNIS source coordinates.

| mouth = Tillamook Bay

| mouth_location = Oregon

| mouth_coordinates = {{coord|45.470381|-123.882627|type:river_source:gnis-1151402_elevation:1_dim:28968|format=dms|display=inline,title}}

| mouth_elevation = {{convert|3|ft|abbr=on}}

| progression =

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| basin_size = {{convert|175|sqmi|abbr=on}}{{cite web | title = Trask River Basin | publisher = Tillamook Bay Watershed Council | url = http://tillamookbaywatershedcouncil.net/Trask_River_Oregon.html | accessdate = November 19, 2009 | url-status = dead | archiveurl = https://web.archive.org/web/20080828164756/http://www.tillamookbaywatershedcouncil.net/Trask_River_Oregon.html | archivedate = August 28, 2008 }}

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The Trask River is in northwestern Oregon in the United States. It drains a mountainous timber-producing area of the Northern Oregon Coast Range west of Portland into Tillamook Bay and the Pacific Ocean.{{cite map |publisher = DeLorme Mapping |title = Oregon Atlas and Gazetteer |edition = 2008 |isbn = 978-0-89933-347-2 |section = 26–27}} It is one of five rivers—the Tillamook, the Trask, the Wilson, the Kilchis, and the Miami—that flow into the bay.{{cite web | title = Five Rivers | publisher = Tillamook Bay Watershed Council | url = http://tillamookbaywatershedcouncil.net/Tillamook_Bay_Sub_Watersheds.html | accessdate = November 14, 2009 | url-status = dead | archiveurl = https://web.archive.org/web/20080807121427/http://www.tillamookbaywatershedcouncil.net/Tillamook_Bay_Sub_Watersheds.html | archivedate = August 7, 2008 }}

The main stem of the river is {{convert|18|mi|km}} long from where its two forks join at {{coord|45.439830|-123.611505|type:river_source:gnis-1151402|name=Trask River (source)}}. The North Fork, {{convert|30|mi|km}} long, rises in several forks itself in the Tillamook State Forest in western Washington County, west of Forest Grove, Oregon. It flows generally west into eastern Tillamook County. The South Fork, {{convert|10|mi|km}} long, rises in southern Tillamook County at {{coord|45.3489972|-123.6534486|type:river_source:gnis-1150031_elevation:549|name=South Fork Trask River (source)}} and flows generally northward.

The river is known for its runs of Steelhead and Chinook salmon.

The river is named for Elbridge Trask who settled on the shores of Tillamook Bay in 1848. Trask's overland journey was described in the 1960 historical novel Trask by Don Berry, as well as two sequels. The novels are collectively known as the "Trask novels."

Course

File:Barney Reservoir - Trask River - Oregon.jpg

The Trask River is formed by the confluence of North Fork Trask River and South Fork Trask River near Trask County Park in the Tillamook State Forest. It is paralleled for much of its length by Trask River Road. Flowing generally west, the river receives Rowe Creek from the left about {{convert|16|mi|km}} from the mouth, then Samson Creek from the right about {{convert|1|mi|km}} later. Over the next {{convert|4|mi|km}} Burton, Blue Ridge, Hatchery, Trowbridge, Little Rock, and Panther creeks all enter from the right. The river passes a United States Geological Survey stream gauge at river mile (RM) 10.95 or river kilometer (RK) 17.62, just before receiving Cedar Creek from the right.

Thereafter, Gold and Hanenkrat creeks enter from the left and Green Creek from the right. The river receives Mill Creek from the left about {{convert|5|mi|km}} from the mouth. About {{convert|1|mi|km}} later, the stream passes under U.S. Route 101 and flows around the southwestern edge of Tillamook. Receiving Hoquarten and Nolan sloughs from the right, it merges with the Tillamook River and flows into Tillamook Bay near Memaloose Point.

=Discharge=

The United States Geological Survey (USGS) monitors the flow of the Trask River at a stream gauge {{convert|10.95|mi|km}} inland from the mouth of the river. Based on data collected from April 1996 through 2008, the average flow at this gauge is {{convert|985|cuft/s|m3/s|1}}. This is from a drainage area of {{convert|156|sqmi|km2|0}}, about 89 percent of the total Trask River watershed. The maximum flow recorded there was {{convert|22500|cuft/s|m3/s}} on November 25, 1999, and the minimum flow was {{convert|49|cuft/s|m3/s}} on September 11, 2007.{{cite web| title = Water-Data Report 2008: 14304280 Trask River above Cedar Creek, near Tillamook, OR |url =http://wdr.water.usgs.gov/wy2008/pdfs/14302480.2008.pdf | format = PDF | publisher = United States Geological Survey | accessdate = December 5, 2009}}

See also

References

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