Big Run (East Branch Fishing Creek tributary)
Big Run is a tributary of East Branch Fishing Creek in Sullivan County, Pennsylvania, in the United States. It is approximately long and flows through Davidson Township. Its watershed has an area of . The stream has a low pH and poor water quality, although that could potentially be remedied. The main rock formations in the area are the Catskill Formation, the Huntley Mountain Formation, and the Burgoon Sandstone. The main soil associations in the vicinity of the stream are the Deep-Wellsboro-Oquaga association, the Oquaga association, and the Norwich association. Course Big Run begins in eastern Davidson Township. It flows east for a short distance, nearly reaching the border between Sullivan County and Luzerne County. It then turns north, entering a valley. Once inside the valley, the stream turns west and then southwest, as the valley gets deeper. After less than a mile, the stream turns northwest and leaves the valley. It then merges with Sullivan Branch to form East Branch Fishing Creek. Tributaries Big Run has two unnamed tributaries. These are known as Unt 28011 and Unt 28012. Both are considered by the Pennsylvania Department of Environmental Protection to be impaired by atmospheric deposition. Hydrology The average discharge of