:Marsh Run

Marsh Run begins in a small pond in western Fairmount Township, Luzerne County. It flows west for several tenths of a mile, passing through a wetland and crossing Hynick Road. Almost immediately after crossing Hynick Road, the stream exits Luzerne County. Upon exiting Luzerne County, it enters Sugarloaf Township, Columbia County. The stream continues flowing west, receiving an unnamed tributary from the right after a short distance. A short distance further downstream, it reaches its confluence with Coles Creek.

Marsh Run joins Coles Creek {{convert|4.48|mi|km}} upstream of its mouth.{{Citation|url = http://www.lycoming.edu/cwi/pdfs/paGazetterOfStreams.pdf|title = Pennsylvania Gazetteer of Streams|date = November 2, 2001|accessdate = December 23, 2014}}

The elevation near the mouth of Marsh Run is {{convert|1115|ft|m}} above sea level.{{Citation|author = Geographic Names Information System|url = http://gnis.usgs.gov/apex/f?p=136:3:0::NO:3:P3_FID,P3_TITLE:1180455,Marsh%20Run|title = Feature Detail Report for: Marsh Run|accessdate = December 23, 2014|author-link = Geographic Names Information System}} The elevation of the stream's source is between {{convert|1220|and|1240|ft|m}} above sea level. The stream is relatively small and has marshes along it.{{Citation|author = Walter M. Brasch|title = Columbia County Place Names|page = 141|year = 1982|author-link = Walter M. Brasch}}

For most of its length, Marsh Run flows over a glacial till known as the Wisconsinian Till. Most of the till in the vicinity of the stream is expected to be more than {{convert|6|ft|m}} thick. However, the stream's lower reaches are on alluvium and Wisconsinan Outwash. The former contains stratified sand, silt, and gravel, while the latter contains stratified sand and gravel. Bedrock consisting of sandstone and shale is also present in the vicinity of the stream. A wetland is located in its upper reaches.{{Citation|author=Duane D. Braun |url=http://www.dcnr.state.pa.us/topogeo/openfile/redrock.pdf |title=Surficial geology of the Red Rock 7.5-minute Quadrangle Luzerne, Sullivan, and Columbia Counties, Pennsylvania |year=2007 |accessdate=December 24, 2014 |url-status=dead |archiveurl=https://web.archive.org/web/20120924083144/http://www.dcnr.state.pa.us/topogeo/openfile/redrock.pdf |archivedate=September 24, 2012 }}

The watershed of Marsh Run has an area of {{convert|0.44|sqmi|km2}}. The stream is entirely in the United States Geological Survey quadrangle of Red Rock. It is located in the northeastern portion of Sugarloaf Township.

Wild trout naturally reproduce in Marsh Run throughout between its headwaters and its mouth.{{Citation|author=Columbia County Conservation District |url=http://www.columbiaccd.org/natural_trout_reproduction_july_2013.pdf |title=Pennsylvania Wild Trout Waters (Natural Reproduction) |publisher=Columbia County |page=2 |date=July 2013 |accessdate=December 24, 2014 |url-status=dead |archiveurl=https://web.archive.org/web/20140910195305/http://www.columbiaccd.org/natural_trout_reproduction_july_2013.pdf |archivedate=September 10, 2014 |author-link=Columbia County Conservation District }}

Marsh Run was entered into the Geographic Names Information System on August 2, 1979. Its identifier in the Geographic Names Information System is 1180455.

Marsh Run is named for the fact that marshes are located along it.

• Chimneystack Run, next tributary of Coles Creek going upstream
• Ashelman Run, next tributary of Coles Creek going downstream
• List of tributaries of Fishing Creek (North Branch Susquehanna River)

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Category:Rivers of Columbia County, Pennsylvania

Category:Rivers of Luzerne County, Pennsylvania

Category:Tributaries of Fishing Creek (North Branch Susquehanna River)

Category:Rivers of Pennsylvania