Long Run (Elk Run tributary)

Long Run
Physical characteristics
Source 
 • locationtop of a deep valley in Davidson Township, Sullivan County, Pennsylvania
 • elevationbetween 2,360 and 2,380 feet (720 and 730 m)
Mouth 
 • location
Elk Run in Davidson Township, Sullivan County, Pennsylvania
 • coordinates
41°18′37″N 76°24′37″W / 41.31026°N 76.41018°W / 41.31026; -76.41018
 • elevation
1,217 ft (371 m)
Length2.4 mi (3.9 km)
Basin size1.92 mi2 (5.0 km2)
Basin features
ProgressionElk Run → West Branch Fishing CreekFishing CreekSusquehanna RiverChesapeake Bay
Tributaries 
 • leftfour unnamed tributaries

Long Run is a tributary of Elk Run in Sullivan County, Pennsylvania, in the United States. It is approximately 2.4 miles (3.9 km) long and flows through Davidson Township. The stream's watershed has an area of 1.92 square miles (5.0 km2). It has no named tributaries, but four unnamed tributaries. The stream is considered by the Pennsylvania Department of Environmental Protection to be impaired by atmospheric deposition and metals. Wisconsinan Bouldery Till, Wisconsinan Till, and bedrock consisting of sandstone and shale occur in the vicinity of it.