The stream has a low pH and sometimes has poor water quality, although that could potentially be remedied.

[1] During average flow conditions, the discharge of Pigeon Run is 636 gallons per minute.

The concentration of aluminum in the stream is 0.219 milligrams per liter during average flow conditions.

Proposed methods of increasing alkalinity include vertical flow wetlands and road liming.

[2] Pigeon Run is considered by the Pennsylvania Department of Environmental Protection to be impaired by atmospheric deposition due to metals and pH.

[7] Pigeon Run is designated by the Pennsylvania Department of Environmental Protection for use by aquatic life.

[2] Pigeon Run was first listed by the Pennsylvania Department of Environmental Protection as impaired in 2002.