Hammersley Fork

Hammersley Fork Hammersley Fork Creek
Hammersley Fork
Mouth Location of the mouth of Hammersely Fork in Pennsylvania
Etymology	named after J.P. Hammersley
Physical characteristics
Source
• location	central Eulalia Township, Potter County, Pennsylvania
• elevation	between 1,800 and 1,820 feet (549 and 555 m)
Mouth
• location	Kettle Creek in Leidy Township, Clinton County, Pennsylvania
• coordinates	41°26′50″N 77°52′11″W / 41.4471°N 77.8698°W / 41.4471; -77.8698
• elevation	968 ft (295 m)
Length	10.0 mi (16.1 km)
Basin size	32.55 sq mi (84.3 km2)
Basin features
Progression	Kettle Creek → West Branch Susquehanna River → Susquehanna River → Chesapeake Bay

Hammersley Fork (also known as Hammersley Fork Creek^[1]) is a tributary of Kettle Creek in Potter County and Clinton County, Pennsylvania, in the United States. It is approximately 10.0 miles (16.1 km) long and flows through Warton Township in Potter County and Leidy Township in Clinton County.^[2] The watershed of the stream has an area of 32.7 square miles (85 km²). The main rock formation in the watershed is the Pottsville Formation. A number of bridges cross the stream.

There are no state roads and virtually no township roads in the watershed of Hammersley Fork. However, there are dirt roads and gravel roads, and several stream crossings in the watershed. The first settlers arrived in the watershed in 1827 and the first roads in the area were constructed several years later. Industrial activities such as logging were common in the watershed in the early 20th century, but there is currently virtually no such activity there. Wild trout naturally reproduce in the stream throughout its entire length. Most of the creek has a substantial riparian buffer.