Pigeon Run (Sullivan Branch)
| Pigeon Run | |
|---|---|
| Basin features | |
| Main source | eastern Davidson Township, Sullivan County, Pennsylvania 2,300 to 2,320 feet (700 to 710 m) |
| River mouth | Sullivan Branch in Davidson Township, Sullivan County, Pennsylvania 1,489 ft (454 m) |
| Progression | Sullivan Branch → East Branch Fishing Creek → Fishing Creek → Susquehanna River → Chesapeake Bay |
| Basin size | 0.78 sq mi (2.0 km2) |
| Physical characteristics | |
| Length | 1.3 mi (2.1 km) |
| Discharge |
|
Pigeon Run is a tributary of Sullivan Branch in Sullivan County, Pennsylvania, in the United States. It is approximately 1.3 miles (2.1 km) long and flows through Davidson Township. Its watershed has an area of 0.78 square miles (2.0 km2). The stream has a low pH and sometimes has 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 Norwich association, the Morris association, and the Oquaga association.
Pigeon Run begins in eastern Davidson Township, not far from the border between Sullivan County and Luzerne County. It flows south for some distance before entering a very steep valley. Approximately halfway down the valley, the stream turns southwest. It reaches its confluence with Sullivan Branch at the end of the valley.
During average flow conditions, the discharge of Pigeon Run is 636 gallons per minute. Its pH ranges from less than 4 to over 6, but is 5.11 during average flow conditions. The concentration of aluminum in the stream is 0.219 milligrams per liter during average flow conditions.
Pigeon Run experiences chronic acidification. The stream has "fair" water quality during average flow conditions, but "very poor" water quality during high flow conditions. It requires an additional alkalinity load of 7 pounds (3.2 kg) per day to be restored to the satisfaction of the East Branch Fishing Creek Restoration Plan. Proposed methods of increasing alkalinity include vertical flow wetlands and road liming.
Pigeon Run is considered by the Pennsylvania Department of Environmental Protection to be impaired by atmospheric deposition due to metals and pH.
The elevation of Pigeon Run near its mouth is 1,489 feet (454 m) above sea level. The elevation of the source is between 2,300 feet (700 m) and 2,320 feet (710 m) above sea level.
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