BirdTrout
Big Mill Creek, Pennsylvania
15.3 mapped river miles, draining 20 square miles, in the Clarion River basin watershed. No gauge stands in it; the nearest is 5.6 miles away, and what this page knows about its temperature is PA DEP's classification of the water itself.
50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.
The nearest live reading
The nearest gauge is 5.6 miles away, at Clarion River — not a reading of this water, but of what the region is doing today.
Thermal classification
PA DEP's classification of this water, reach by reach. A class, not a temperature — no July mean, because none was measured here.
| Reach | Typed miles | Band | PA DEP type |
|---|---|---|---|
| RM 15.3–0.0 | 18.1 | cold | — |
PA DEP has classified 18.1 of the 18.1 miles NHD carries for this stream — 100% of it. Every typed reach carries the same class, cold. The untyped reaches are not warm water — they are water PA DEP's inventory does not reach, and the mile ranges above span only the reaches it does.
Questions about this river
- Big Mill Creek fishing report — what it reads right now
- How to get to Big Mill Creek — access, parking and public land
- Big Mill Creek fishing regulations — season, size and gear by reach
PA DEP classification
PA DEP classifies this water as Cold Water Fishes. The management tier on those reaches is Cold Water Fishes. This is a designation of the fishery, not the season and creel rules — those change yearly and live with the agency.
Public land on the river
2 units of public or open-access land touch this river, 575,298 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Allegheny National Forest | U.S. Forest Service | 575,241 |
| Sandy Beach Park | county land | 57 |
Species
PA DEP designates this as trout water — Cold Water Fishes — without naming the species. No fish survey or stocking record for this water is in the files this site reads.
Tributaries and watershed
8 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
- Rocky Run 12.6 mi · RM 4.6
- Pine Run 6.1 mi · RM 8.0
- Windfall Run 4.3 mi · RM 1.3
- Ellithorpe Run 3.5 mi · RM 12.0
- Slide Run 2.8 mi · RM 9.6
- Red Mill Run 1.9 mi · RM 6.5
- Spencer Run 1.3 mi · RM 9.5
- Bunts Run 0.8 mi · RM 7.7
Big Mill Creek sits in HUC 8 05010005, the Clarion River basin, and drains 20 square miles, Strahler order 4 at the mouth. 30 NHD reaches carry the name for 18.1 miles in total — more than the 15.3 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.
Other water nearby
The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.