BirdTrout
North Branch Potomac River Watershed, Pennsylvania
642 miles of mapped stream across 1,343 square miles of drainage in Bedford, Somerset counties, in 32 named streams. Pennsylvania designates 197 of those miles as trout water, on 30 streams.
Open in BirdTrout50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands the app paints. On this map the colour is PA DEP's own classification of the stream, not a measurement, except at the gauge dots, which read live. Grey is water PA DEP has not typed.
The watershed in numbers
HUC8 02070002 in the USGS Watershed Boundary Dataset. Every figure below adds up the river pages in this basin — same records, one basin at a time.
Cold, cool and warm water
Pennsylvania publishes no thermal class. What PA DEP publishes is a Chapter 93 designated use — Cold Water Fishes, Trout Stocking, Warm Water Fishes and the rest — which names the fishery a stream is protected for. It is the closest any agency here comes to a temperature without being one, and docs/pa-thermal-fit.md is where the distinction is measured rather than asserted. It covers 88% of this basin's stream miles (561.6 of 642); the rest is untyped and is drawn grey on the map above.
- Cold 561.6 mi (100%)
561.6 of the 561.6 typed miles in this basin — 100% — are cold or cold-transitional water. Every typed reach carries the same class, which is as likely to be the coverage as the water: PA DEP has typed 88% of it.
Every named stream in the basin
All 32 of them, longest first. 2 have a page of their own and are linked; the rest are in the app. The class column is PA DEP's designation of that stream. "Now" is the live USGS reading where a gauge stands in that stream.
| Stream | Miles | Class | Now | Designation |
|---|---|---|---|---|
| Wills Creek | 35.0 | Cold | — | Cold Water Fishes |
| Evitts Creek | 22.2 | Cold | — | Cold Water Fishes |
| Little Wills Creek | 17.4 | Cold | — | Cold Water Fishes |
| Brush Creek | 15.4 | Cold | — | Cold Water Fishes |
| Jennings Run | 11.1 | untyped | — | — |
| Gladdens Run | 9.3 | Cold | — | Cold Water Fishes |
| Laurel Run | 8.7 | Cold | — | Cold Water Fishes |
| Wolf Camp Run | 8.7 | Cold | — | Cold Water Fishes |
| Rocky Gap Run | 8.4 | Cold | — | Cold Water Fishes |
| Shaffers Run | 6.7 | Cold | — | Cold Water Fishes |
| Growden Run | 6.0 | Cold | — | Cold Water Fishes |
| Mountain Run | 5.7 | Cold | — | Cold Water Fishes |
| Hillegas Run | 5.5 | Cold | — | Cold Water Fishes |
| North Branch Jennings Run | 5.0 | Cold | — | Cold Water Fishes |
| Tiger Run | 4.8 | Cold | — | Cold Water Fishes |
| Tar Water Creek | 4.5 | Cold | — | Cold Water Fishes |
| Thompson Run | 4.3 | Cold | — | Cold Water Fishes |
| Poorbaugh Run | 3.9 | Cold | — | Cold Water Fishes |
| Rush Run | 3.8 | Cold | — | Cold Water Fishes |
| Ware Run | 3.6 | Cold | — | Cold Water Fishes |
| Oster Run | 3.4 | Cold | — | Cold Water Fishes |
| Sand Spring Run | 3.4 | Cold | — | Cold Water Fishes |
| Pea Vine Run | 3.3 | untyped | — | — |
| Gooseberry Run | 3.1 | Cold | — | Cold Water Fishes |
| Panther Run | 2.9 | Cold | — | Cold Water Fishes |
| Shoemaker Run | 2.8 | Cold | — | Cold Water Fishes |
| Powder Run | 2.6 | Cold | — | Cold Water Fishes |
| Mill Run | 2.4 | Cold | — | Cold Water Fishes |
| Savage Run | 2.4 | Cold | — | Cold Water Fishes |
| Bruck Run | 2.1 | Cold | — | Cold Water Fishes |
| Leapley Run | 2.0 | Cold | — | Cold Water Fishes |
| Grim Run | 1.8 | Cold | — | Cold Water Fishes |
Public land in the watershed
0 acres in 3 units. Private inholdings carried in the same source file are excluded, here and on the map.
| Managing agency | Acres | Share | Units |
|---|---|---|---|
| PGC | 0 | 0% | 3 |
The biggest named blocks of it, each with its own page — the streams on that ground, what is open to hunt on it, and where the access sites are.
Neighbouring watersheds
The subbasins that share a boundary with this one and carry coldwater streams.