:Barnes Brook

Barnes Brook begins atop Bartlett Mountain in North Branch Township, Wyoming County. It flows west-southwest for a few tenths of a mile before turning northwest and beginning to quickly descend the mountain into a deep valley. After several tenths of a mile, the stream enters Colley Township, Sullivan County and receives its only named tributary, Coffee Brook, from the left. The stream then turns north for several tenths of a mile before turning north-northwest for a few tenths of a mile. It then exits the valley and reaches its confluence with North Branch Mehoopany Creek.

Barnes Brook joins North Branch Mehoopany Creek {{convert|7.12|mi|km}} upstream of its mouth.{{Citation|url = http://www.lycoming.edu/cwi/pdfs/paGazetterOfStreams.pdf|title = Pennsylvania Gazetteer of Streams|pages = 29, 49|date = November 2, 2001|accessdate = January 7, 2018}}

Barnes Brook has one named tributary, which is known as Coffee Brook. Coffee Brook joins Barnes Brook {{convert|0.84|mi|km}} upstream of its mouth and drains an area of {{convert|0.86|sqmi|km2}}.

The elevation near the mouth of Barnes Brook is {{convert|1171|ft|m}} above sea level.{{citation|author = Geographic Names Information System|url = https://gnis.usgs.gov/apex/f?p=138:3:0::NO::P3_FID,P3_TITLE:1168736,Barnes%20Brook|title = Feature Detail Report for: Barnes Brook|accessdate = January 7, 2018}}{{Dead link|date=June 2020 |bot=InternetArchiveBot |fix-attempted=yes }} The elevation near the stream's source is {{convert|2134|ft|m}} above sea level.

Barnes Brook is a high-gradient stream, falling at a rate of {{convert|102.1|m/km|ft/mi|sp=us}}. This is the second-highest gradient of any named direct tributary of North Branch Mehoopany Creek, after Catlin Brook. It flows in a generally northwesterly direction. Mountains in the watershed of the stream include Bartlett Mountain and Briskey Mountain, the latter of which is where its headwaters are.{{citation|author = Robert Wnuk, Robert Moase, Matthew Gearhart|url = http://files.dep.state.pa.us/Water/Drinking%20Water%20and%20Facility%20Regulation/WaterQualityPortalFiles/Class_A_PFBC_Reports/Burgess_Brook.pdf|title = North Branch Mehoopany Creek Basin (404G) Fisheries Management Report|pages = 9, 16–17, 23|date = November 2001|accessdate = January 7, 2018}}

In an August 2001 study by the Pennsylvania Fish and Boat Commission, Barnes Brook was found to be entirely dry, except for a number of stagnant pools. When the ambient air temperature was {{convert|25.0|C|F}}, the water temperature at the stream's mouth was found to be {{convert|17.8|C|F}}. The pH of the stream at its mouth was 6.6 and the alkalinity was {{convert|40|mg/L|oz/cuft|sp=us}}. The water hardness was {{convert|48|mg/L|oz/cuft|sp=us}} and the specific conductance was 111 umhos.

The watershed of Barnes Brook has an area of {{convert|1.98|sqmi|km2}}. The stream is entirely within the United States Geological Survey quadrangle of Jenningsville. It joins North Branch Mehoopany Creek near Lovelton.

Only 4 percent of the length of Barnes Brook is within {{convert|100|m|ft|sp=us}} of a road. However, 51 percent is within {{convert|300|m|ft|sp=us}} of a road and 64 percent is within {{convert|500|m|ft|sp=us}} of one. In 2000, the population density of the stream's watershed was {{convert|4|/km2|/mi2|disp=preunit|people |people |abbr=off|sp=us}}. Most of the watershed is forested land and part of it is in Pennsylvania State Game Lands Number 57.

Barnes Brook is classified as a Coldwater Fishery.{{citation|author = Pennsylvania Environmental Council, Wyoming County Office of Community Planning, Mehoopany Creek Watershed Association|url = http://pecpa.org/wp-content/uploads/Mehoopany-Creek-and-Little-Mehoopany-Creek-Watersheds.pdf|title = MEHOOPANY CREEK and LITTLE MEHOOPANY CREEK WATERSHEDS RIVERS CONSERVATION PLAN|pages = 18, 57|date = March 31, 2007|accessdate = January 7, 2018|archive-date = April 1, 2019|archive-url = https://web.archive.org/web/20190401192843/https://pecpa.org/wp-content/uploads/Mehoopany-Creek-and-Little-Mehoopany-Creek-Watersheds.pdf|url-status = dead}} In 2001, the stream was found to lack fish habitats. However, the Pennsylvania Fish and Boat Commission will hold a meeting in January 2018 to consider adding the entire length of the stream, along with many other streams, to its list of wild trout streams.{{citation|author = Pennsylvania Fish and Boat Commission|url = http://www.fishandboat.com/Regulations/Documents/noticesDocs/2017-11-06-Jan2018WildTrout.pdf|title = Classification of Wild Trout Streams Proposed Additions and Revisions January 2018|page = 6|accessdate = January 7, 2018}}

Barnes Brook was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1168736.

Barnes Brook was visited in 2001 by Pennsylvania Fish and Boat Commission biologists, but unlike several streams in the North Branch Mehoopany Creek watershed, electrofishing did not occur, due to low stream flow.

• Sciota Brook, next tributary of North Branch Mehoopany Creek going downstream
• Smith Cabin Run, next tributary of North Branch Mehoopany Creek going upstream
• List of rivers of Pennsylvania

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Category:Tributaries of North Branch Mehoopany Creek