Blackberry Run
| Blackberry Run | |
|---|---|
 |
|
| Basin features | |
| Main source | plateau in Davidson Township, Sullivan County, Pennsylvania 2,260 ft (690 m) |
| River mouth | East Branch Fishing Creek in Davidson Township, Sullivan County, Pennsylvania 1,076 ft (328 m) 41°18′34″N 76°21′17″W / 41.3095°N 76.3546°WCoordinates: 41°18′34″N 76°21′17″W / 41.3095°N 76.3546°W |
| Progression | East Branch Fishing Creek → Fishing Creek → Susquehanna River → Chesapeake Bay |
| Basin size | 1.91 sq mi (4.9 km2) |
| Physical characteristics | |
| Length | 2.5 mi (4.0 km) |
| Discharge |
|
Blackberry Run is a tributary of East Branch Fishing Creek in Sullivan County, Pennsylvania, in the United States. It is approximately 2.5 miles (4.0 km) long and flows through Davidson Township. The watershed of the stream has an area of 1.91 square miles (4.9 km2). The stream is acidic and is considered by the Pennsylvania Department of Environmental Protection to be impaired by atmospheric deposition. Rock formations in the watershed include the Catskill Formation and the Huntley Mountain Formation. Soils in the watershed include the Deep-Wellsboro-Oquaga, Wellsboro, and Norwich soil associations.
Blackberry Run begins on a plateau in Davidson Township. It flows south for a short distance before turning southeast into a deep valley. After some distance, it turns south-southeast, following the valley. It eventually leaves the valley and reaches its confluence with East Branch Fishing Creek near the border between Sullivan County and Columbia County.
Blackberry Run joins East Branch Fishing Creek 3.08 miles (4.96 km) upstream of its mouth. It is the last named tributary to join East Branch Fishing Creek before it reaches its mouth.
Blackberry Run has no named tributaries. However, it does have at least one small unnamed tributary.
The average discharge of Blackberry Run is 2113 gallons per minute. The pH of the stream averages 4.70. During high flow conditions, it has a pH of 4.72 or 4.74.
Blackberry Run experiences chronic acidification. However, it does not degrade the water quality of East Branch Fishing Creek as significantly as the creek's tributaries further upstream do.
The water quality of Blackberry Run is considered to be "severe" during high-flow conditions, a rating worse than "very poor", which the stream is rated as in normal flow conditions. Blackberry Run requires an additional 66 pounds (30 kg) of alkalinity per day to be restored to satisfaction of the East Branch Fishing Creek Restoration Plan. One proposed method of increasing the alkalinity of the stream is the construction of vertical flow wetlands at its headwaters. Other proposed methods include road liming and high flow buffer channels.
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