Frozen Run near its mouth
|Origin||pond in Hemlock Township, Columbia County, Pennsylvania|
|Mouth||Hemlock Creek in Hemlock Township, Columbia County, Pennsylvania|
|Progression||Hemlock Creek → Fishing Creek → Susquehanna River → Chesapeake Bay|
|Etymology||it is known to freeze over|
|Length||3.2 mi (5.1 km)|
|Mouth elevation||535 ft (163 m)|
|Basin area||3.55 sq mi (9.2 km2)|
Frozen Run is a tributary of Hemlock Creek in Columbia County, Pennsylvania, in the United States. It is approximately 3.2 miles (5.1 km) long and flows through Hemlock Township. The watershed of the stream has an area of 3.55 square miles (9.2 km2). The stream flows through Frosty Valley and is also near a fault. It is designated as a coldwater fishery. Parts of the watershed are impaired due to siltation. The stream has several unnamed tributaries.
A. Joseph Armstrong describes Frozen Run as "pretty mundane" in his book Trout Unlimited's Guide to Pennsylvania Limestone Streams.
Frozen Run begins in a pond in Hemlock Township. It flows south in a valley for less than a mile before turning southeast, entering the much broader Frosty Valley. In Frosty Valley, the stream turns east and flows for a few miles before reaching its confluence with Hemlock Creek near the community of Buckhorn.
Frozen Run joins Hemlock Creek 2.26 miles (3.64 km) upstream of its mouth.
Frozen Run has a number of unnamed tributaries. These include UNT 65640513, UNT 65640565, UNT 65640671, and UNT 65640719.
Hydrology, geography, and geology
Parts of Frozen Run and several of its unnamed tributaries are considered by the Pennsylvania Department of Environmental Protection to be impaired by siltation due to agriculture. 2.4 miles (3.9 km) of streams in the watershed are considered to be impaired.
The water temperature of Frozen Run is 68 °F (20 °C). The width of the stream is between 5 feet (1.5 m) and 10 feet (3.0 m). Frozen Run has an elevation of 535 feet (163 m) above sea level near its mouth.
Frozen Run mostly flows through rock of the Mahantango Formation. However, parts of the stream are over rock of the Harrell Formation and the stream's upper reaches lie over rock of the Trimmers Rock Formation. The stream is in Frosty Valley and is located near the Lightstreet Fault.
Name and etymology
There are forested seeps at the headwaters of Frozen Run. According to the Columbia County Natural Areas Inventory, these may contain "sensitive ecological features".
- United States Geological Survey, The National Map Viewer, retrieved July 22, 2014
- A. Joseph Armstrong (January 1, 2000), Trout Unlimited's Guide to Pennsylvania Limestone Streams, Stackpole Books, retrieved July 22, 2014
- Pennsylvania Gazetteer of Streams, November 2, 2001, p. 101, retrieved July 22, 2014
- Pennsylvania Department of Environmental Protection (January 8, 2013), HEMLOCK CREEK WATERSHED TMDL Columbia and Montour Counties, retrieved July 22, 2014
- Columbia County, Pennsylvania CHESAPEAKE BAY TRIBUTARY STRATEGY, February 2005, retrieved July 22, 2014
- Topographic Map Stream Features in Columbia County, Pennsylvania, retrieved July 22, 2014
- James H. Dolimpio (1990), Bedrock geologic map of the Washingtonville and Millville quadrangles, Montour, Columbia, and Northumberland counties, Pennsylvania, retrieved July 22, 2014
- APPENDIX C FEMA STUDY, February 4, 2008, retrieved July 22, 2014
- Walter M. Brasch (1982), Columbia County place names, Columbia County Historical Society, retrieved July 22, 2014
- Jeffrey R. Frazier (January 1, 1997), Pennsylvania Fireside Tales: Origins and Foundations of Pennsylvania Mountain Folktales and Legends, Volume 2
- The Pennsylvania Science Office of The Nature Conservancy (2004), Columbia County Natural Areas Inventory 2004, p. 97, retrieved July 22, 2014