BirdTrout
Lower Delaware River Watershed, Pennsylvania
1,024 miles of mapped stream across 1,151 square miles of drainage in Delaware, Philadelphia, Chester, Montgomery, Bucks counties, in 152 named streams. Pennsylvania designates 204 of those miles as trout water, on 72 streams. The 10 mainstem gauges with a July record read between 74.3 and 80.7°F in July.
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 02040202 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 58% of this basin's stream miles (591.0 of 1,024); the rest is untyped and is drawn grey on the map above.
- Cold 94.2 mi (16%)
- Cool 241.4 mi (41%)
- Warm 255.5 mi (43%)
94.2 of the 591.0 typed miles in this basin — 16% — are cold or cold-transitional water. The dominant class is warm.
Every named stream in the basin
All 152 of them, longest first. 8 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 |
|---|---|---|---|---|
| Delaware River | 41.1 | Warm | — | — |
| Darby Creek | 28.1 | Cold | — | Cold Water Fishes, Trout Stocking |
| Ridley Creek | 25.9 | Cool | — | Trout Stocking |
| Pennypack Creek | 25.0 | Cool | — | Trout Stocking |
| Crum Creek | 24.9 | Warm | — | Cold Water Fishes |
| Chester Creek | 22.8 | Cool | — | Trout Stocking |
| Oldmans Creek | 22.1 | untyped | — | — |
| Cobbs Creek | 12.4 | Warm | — | — |
| Poquessing Creek | 11.2 | Warm | — | — |
| West Branch Chester Creek | 9.9 | Cool | — | Trout Stocking |
| East Branch Chester Creek | 9.2 | Cool | — | Trout Stocking |
| Tacony Creek | 8.7 | Warm | — | — |
| Frankford Creek | 7.9 | Warm | — | — |
| Swede Run | 7.5 | untyped | — | — |
| Still Run | 7.1 | untyped | — | — |
| Woodbury Creek | 6.5 | untyped | — | — |
| South Branch Naaman Creek | 6.5 | untyped | — | — |
| Newton Creek | 6.3 | untyped | — | — |
| Pompeston Creek | 6.2 | untyped | — | — |
| Byberry Creek | 6.0 | Warm | — | — |
| Marcus Hook Creek | 6.0 | Warm | — | — |
| Naaman Creek | 5.9 | untyped | — | — |
| Muckinipattis Creek | 5.4 | Warm | — | — |
| Beaver Creek | 5.1 | untyped | — | — |
| Stony Creek | 5.0 | Warm | — | — |
| Naylors Run | 4.8 | Warm | — | — |
| West Branch Crum Creek | 4.7 | untyped | — | — |
| Nehonsey Brook | 4.7 | untyped | — | — |
| Rattling Run | 4.5 | untyped | — | — |
| Clonmell Creek | 4.3 | untyped | — | — |
| Concord Creek | 4.2 | Cool | — | Trout Stocking |
| Rocky Run | 4.2 | Cold | — | Cold Water Fishes |
| Ithan Creek | 4.1 | Cold | — | Cold Water Fishes |
| Little Timber Creek | 4.0 | untyped | — | — |
| Little Mantua Creek | 3.8 | untyped | — | — |
| Little Crum Creek | 3.8 | Warm | — | — |
| South Branch Newton Creek | 3.7 | untyped | — | — |
| Southampton Creek | 3.4 | Cool | — | Trout Stocking |
| Huntingdon Valley Creek | 3.4 | Cool | — | Trout Stocking |
| Spring Run | 3.4 | Cool | — | Trout Stocking |
| Trout Run | 3.3 | Warm | — | — |
| West Branch Naaman Creek | 3.3 | untyped | — | — |
| Repaupo Creek | 3.2 | untyped | — | — |
| Wooden Bridge Run | 3.1 | Cool | — | Trout Stocking |
| Hermesprota Creek | 3.1 | Warm | — | — |
| Okehocking Run | 3.1 | Cool | — | Trout Stocking |
| Pargey Creek | 3.1 | untyped | — | — |
| Walton Run | 3.0 | Warm | — | — |
| London Branch | 3.0 | untyped | — | — |
| Cooper River | 2.9 | untyped | — | — |
| West Branch Indian Creek | 2.8 | Warm | — | — |
| Little Darby Creek | 2.8 | Cold | — | Cold Water Fishes |
| Green Creek | 2.8 | Cold | — | Cold Water Fishes |
| Chrome Run | 2.7 | Cool | — | Trout Stocking |
| Pochack Creek | 2.6 | untyped | — | — |
| East Branch Indian Creek | 2.6 | Warm | — | — |
| Lewis Run | 2.6 | Cold | — | Cold Water Fishes |
| Terwood Run | 2.5 | Cool | — | Trout Stocking |
| Jenkintown Creek | 2.5 | Warm | — | — |
| Pennsauken Creek | 2.5 | untyped | — | — |
| Moss Branch | 2.5 | untyped | — | — |
| East Branch Naaman Creek | 2.5 | untyped | — | — |
| Meadow Brook | 2.4 | Cool | — | Trout Stocking |
| Foxes Run | 2.4 | Cold | — | Cold Water Fishes |
| Hesters Branch | 2.4 | untyped | — | — |
| Hunter Run | 2.4 | Warm | — | — |
| Matthews Branch | 2.3 | untyped | — | — |
| Dismal Run | 2.3 | Cool | — | Trout Stocking |
| Baldwin Run | 2.3 | Warm | — | — |
| Meadowbrook Run | 2.0 | Cold | — | Cold Water Fishes |
| Schuylkill River | 2.0 | untyped | — | — |
| Waynesborough Run | 2.0 | Cold | — | Cold Water Fishes |
| Whiskey Run | 2.0 | Warm | — | — |
| Hunters Run | 2.0 | Cool | — | Trout Stocking |
| Hessian Run | 1.9 | untyped | — | — |
| Reeses Run | 1.9 | Cold | — | Cold Water Fishes |
| Dicks Run | 1.9 | Warm | — | — |
| White Sluice Race | 1.9 | untyped | — | — |
| Sand Ditch | 1.9 | untyped | — | — |
| Peter Creek | 1.8 | untyped | — | — |
| Main Ditch | 1.8 | untyped | — | — |
| Waln Run | 1.8 | Warm | — | — |
| North Branch Newton Creek | 1.7 | untyped | — | — |
| Langford Run | 1.7 | Warm | — | — |
| Vernon Run | 1.7 | Cool | — | Trout Stocking |
| Crum Run | 1.7 | Cool | — | Trout Stocking |
| Shipley Branch | 1.6 | Warm | — | — |
| Mantua Creek | 1.6 | untyped | — | — |
| School House Run | 1.6 | Cool | — | Trout Stocking |
| Thomas Run | 1.5 | Cold | — | Cold Water Fishes |
| Rawson Run | 1.5 | Cold | — | Cold Water Fishes |
| Shugart Run | 1.5 | Cool | — | Trout Stocking |
| Big Run | 1.5 | Cool | — | Trout Stocking |
| Kettle Run | 1.5 | untyped | — | — |
| Robinhood Brook | 1.4 | Cool | — | Trout Stocking |
| Saw Mill Run | 1.4 | Cold | — | Cold Water Fishes |
| Preston Run | 1.4 | Cold | — | Cold Water Fishes |
| East Branch Crum Creek | 1.4 | Cold | — | Cold Water Fishes |
| Plumsock Run | 1.4 | Cool | — | Trout Stocking |
| Deborahs Run | 1.4 | Cool | — | Trout Stocking |
| Long Hook Creek | 1.3 | Warm | — | — |
| Aunt Debs Ditch | 1.3 | untyped | — | — |
| Raccoon Creek | 1.2 | untyped | — | — |
| Rockledge Branch | 1.1 | Cool | — | Trout Stocking |
| Rancocas Creek | 1.1 | untyped | — | — |
| Mill Run | 1.1 | Warm | — | — |
| Browns Run | 1.1 | Cold | — | Cold Water Fishes |
| Julip Run | 1.1 | Cold | — | Cold Water Fishes |
| Valley Run | 1.1 | Cold | — | Cold Water Fishes |
| Holland Run | 1.1 | Warm | — | — |
| Stoney Creek | 1.1 | Warm | — | — |
| Old Canal | 1.1 | untyped | — | — |
| Round Meadow Run | 1.0 | Cool | — | Trout Stocking |
| Hardings Run | 1.0 | Cold | — | Cold Water Fishes |
| Bartram Run | 1.0 | Cold | — | Cold Water Fishes |
| Green Tree Run | 1.0 | Cold | — | Cold Water Fishes |
| Little Pony Trail Creek | 1.0 | Cool | — | Trout Stocking |
| George Smedley Run | 1.0 | Cool | — | Trout Stocking |
| Ashbridge Run | 1.0 | Cool | — | Trout Stocking |
| Collen Brook | 0.9 | Warm | — | — |
| Kirks Run | 0.9 | Cold | — | Cold Water Fishes |
| Ruth Run | 0.9 | Cold | — | Cold Water Fishes |
| Garrett Mill Run | 0.9 | Cool | — | Trout Stocking |
| Northeast Branch Ridley Creek | 0.9 | untyped | — | — |
| Shepard Run | 0.9 | Warm | — | — |
| Traders Run | 0.8 | Cool | — | Trout Stocking |
| Serpentine Run | 0.8 | Cool | — | Trout Stocking |
| Dutton Run | 0.8 | Warm | — | — |
| Black Lake Run | 0.7 | Warm | — | — |
| Sandy Run | 0.7 | Cool | — | Trout Stocking |
| Indian Creek | 0.7 | Warm | — | — |
| Abrahams Run | 0.7 | Cold | — | Cold Water Fishes |
| Camp Run | 0.7 | Cold | — | Cold Water Fishes |
| Grubb Mill Run | 0.7 | Cold | — | Cold Water Fishes |
| East Branch Ridley Creek | 0.7 | Cool | — | Trout Stocking |
| Turtle Rock Run | 0.7 | Cool | — | Trout Stocking |
| Minquas Run | 0.7 | Cool | — | Trout Stocking |
| Benoni Run | 0.7 | untyped | — | — |
| East Branch Jenkintown Creek | 0.6 | Warm | — | — |
| Miles Run | 0.6 | Cold | — | Cold Water Fishes |
| Whetstone Run | 0.6 | Warm | — | — |
| Doom Run | 0.6 | Cold | — | Cold Water Fishes |
| Massacre Run | 0.6 | Cold | — | Cold Water Fishes |
| Massey Run | 0.6 | Cold | — | Cold Water Fishes |
| Big Timber Creek | 0.5 | untyped | — | — |
| Tagalong Run | 0.5 | Cool | — | Trout Stocking |
| Hibberd Run | 0.5 | Cool | — | Trout Stocking |
| Delchester Run | 0.5 | Cool | — | Trout Stocking |
| Yarnell Run | 0.5 | Cool | — | Trout Stocking |
| Finn Run | 0.4 | Cold | — | Cold Water Fishes |
| Little Thoroughfare | 0.2 | Warm | — | — |
| Big Thoroughfare | 0.1 | Warm | — | — |
Public land in the watershed
No public land in this basin is joined to the stream network on our map.
Neighbouring watersheds
The subbasins that share a boundary with this one and carry coldwater streams.