|River mouth||1,138 ft (347 m)
|River system||Allegheny River|
It rises in the mountains of eastern Somerset County from the headwater spring, Pius Spring, in Berlin, and flows north past Shanksville, Stoystown, Hooversville, and Ferndale. It joins the Little Conemaugh River at Johnstown to form the Conemaugh River. Additional variant names include: Achsinne-hanne, Gordon, and Sinne-hanna.
The river basin is in a highly scenic area but had been considered among the most degraded in the state, largely as the result of acid mine drainage from the long history of coal mining in the region. The recovery of the river has been an ongoing project of federal, state, and private agencies, and continues to progress. In recent decades, the river has become a popular destination for trout fishing.
Following the sale of the Quemahoning Reservoir by Bethlehem Steel Corporation to the Cambria Somerset Authority, there have been periodic releases of water into the Stonycreek in order to facilitate whitewater rafting as an additional recreational opportunity. As of early 2010, there was a proposal to substantially increase discharges from the reservoir to improve whitewater rafting on the Stonycreek River.
- "Stonycreek River". Geographic Names Information System. United States Geological Survey. Retrieved 2010-05-29.
- Faher, Mike (2010-01-07). "State: Whitewater cash on way $450,000 grant will go toward Quemahoning project". The Tribune-Democrat. Tribune-Democrat, Johnstown, PA. Archived from the original on 2010-01-09. Retrieved 2010-01-09.
- Stonycreek Quemahoning Initiative
- Stonycreek River fisheries
- Stonycreek River Rendezvous, an annual whitewater event and competition, Benscreek Canoe and Kayak Club
- Stonycreek whitewater information 
- Trout Unlimited, Mountain Laurel Chapter, Stonycreek River
- U.S. Geological Survey: PA stream gaging stations
- USGS: Stonycreek and Little Conemaugh Acid Mine Drainage Study