Twomile Run
Twomile Run is a tributary of Kettle Creek in Clinton County, Pennsylvania, in the United States. It is 4.5 miles (7.2 km) long. Tributaries of the stream include Huling Branch and Middle Branch Twomile Run. The stream flows through Leidy Township and Noyes Township. The stream's watershed has an area of approximately 9 square miles. Coal is mined in the watershed. Most of the acid mine drainage in Kettle Creek comes from Twomile Run.
| Twomile Run | |
|---|---|
Satellite map of Twomile Run. The red dot is the source and the blue dot is the mouth. | |
| Physical characteristics | |
| Source | |
| • location | Sproul State Forest in Leidy Township, Clinton County, Pennsylvania |
| • elevation | 1,700 ft (520 m) |
| Mouth | |
• location | Kettle Creek in Noyes Township, Clinton County, Pennsylvania |
• coordinates | 41°18′53″N 77°51′31″W |
• elevation | 705 ft (215 m) |
| Length | 4.5 mi (7.2 km) |
| Basin size | 9.15 sq mi (23.7 km2) |
| Discharge | |
| • average | 200 to 10,000 US gallons per minute (0.45 to 22.28 cu ft/s; 0.013 to 0.631 m3/s) |
| Basin features | |
| Progression | Twomile Run Kettle Creek West Branch Susquehanna River Susquehanna River Chesapeake Bay |
| Tributaries | |
| • left | Middle Branch Twomile Run, Huling Branch |
| • right | Robbins Hollow |
The discharge of Twomile Run at its mouth ranges from 200 to 10,000 gallons per minute. There are 2.1 to 11.7 milligrams per liter of manganese in the waters at this location. In 2007, the average pH at the mouth of the stream was 3.52, with a range of 3.4 to 3.9. By 2011, the stream's pH had increased slightly upstream of Huling Branch. Rock formations in the watershed include the Huntley Mountain Formation, the Burgoon Sandstone, the Allegheny Group, and the Pottsville Group.