BirdTrout
Huron-Vermilion Watershed, Ohio
1,715 miles of mapped stream across 763 square miles of drainage in Huron, Erie, Ashland, Lorain, Richland, Seneca counties, in 21 named streams. Ohio designates 32 of those miles as trout water, on 2 streams. The 2 mainstem gauges with a July record read between 77.8 and 78.2°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 nothing at all: Ohio EPA publishes no thermal classification, so every stream on this map draws grey. The gauge dots are the one exception and they read live. Grey is every stream here, for the reason above.
The watershed in numbers
HUC8 04100012 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
Ohio publishes no thermal class. What Ohio EPA publishes is an aquatic life use under OAC 3745-1 — Coldwater, Exceptional Warmwater, Warmwater, Modified Warmwater or Limited Resource Habitat — assigned on fish and macroinvertebrate survey scores. It describes the community the water supports, not the temperature it runs at. It covers 0% of this basin's stream miles (0.0 of 1,715); the rest is untyped and is drawn grey on the map above.
Ohio EPA publishes no thermal classification of any stream in the state, so this page has no cold/cool/warm breakdown and none is inferred from the aquatic life use. The coldwater designation is a habitat and management call — OAC 3745-1-07(B)(1)(f) covers both waters holding native coldwater fauna and waters ODNR runs a trout programme on that could be restored to coldwater — and reading a July temperature out of it would be this site inventing one. Ohio water draws grey on the live map; grey means unmeasured.
Every named stream in the basin
All 21 of them, longest first. 2 have a page of their own and are linked; the rest are in the app. The class column is Ohio EPA's designation of that stream. It is not a temperature: this state publishes none, so every row reads untyped in the thermal column. "Now" is the live USGS reading where a gauge stands in that stream.
| Stream | Miles | Class | Now | Designation |
|---|---|---|---|---|
| Vermilion River | 68.9 | untyped | — | Warmwater Habitat |
| West Branch Huron River | 57.5 | untyped | — | — |
| East Branch Huron River | 34.9 | untyped | — | — |
| Chappel Creek | 22.6 | untyped | — | — |
| East Branch Vermilion River | 20.6 | untyped | — | — |
| East Fork Vermilion River | 18.9 | untyped | — | — |
| Frink Run | 17.9 | untyped | — | — |
| Southwest Branch Vermilion River | 16.3 | untyped | — | — |
| Marsh Run | 15.8 | untyped | — | — |
| Cole Creek | 15.8 | untyped | — | — |
| Old Woman Creek | 15.5 | untyped | — | — |
| Huron River | 14.8 | untyped | — | Warmwater Habitat |
| Norwalk Creek | 13.5 | untyped | — | — |
| Buck Creek | 12.8 | untyped | — | — |
| Seymour Creek | 8.7 | untyped | — | — |
| Megginson Creek | 8.2 | untyped | — | — |
| Edson Creek | 5.3 | untyped | — | — |
| Clear Creek | 4.7 | untyped | — | — |
| Frankenburg Creek | 3.6 | untyped | — | — |
| Sandhill Creek | 2.5 | untyped | — | — |
| Sherod Creek | 0.9 | untyped | — | — |
Public land in the watershed
2,780 acres in 3 units, which is 0.6% of the 488,453 acres the basin covers. Private inholdings carried in the same source file are excluded, here and on the map.
| Managing agency | Acres | Share | Units |
|---|---|---|---|
| County land | 2,531 | 91% | 2 |
| State natural-resources agency | 249 | 9% | 1 |
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.
- Mill Hollow - Bacon Woods Park 1,411.7 ac
- Edison Woods Preserve 1,119.4 ac
- Willard Marsh Wildlife Area 1,717.8 ac
Neighbouring watersheds
The subbasins that share a boundary with this one and carry coldwater streams.