BirdTrout
Grand River, Ohio
17.0 mapped river miles, draining 203 square miles, in the Grand basin watershed. A USGS gauge stands in it, but its record is too short for a measured July mean, so what this page knows about its temperature is today's reading and Ohio EPA'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 12.7 miles away, at Mosquito Creek Near Greene Center Oh — not a reading of this water, but of what the region is doing today. A closer gauge has stopped reporting — its water-temperature series is empty, and was last stamped 28 September 2026, so no number here comes from it.
Thermal classification
There isn't one. Ohio EPA publishes no temperature classification for any water in Ohio. What it publishes is the aquatic life use below — a habitat designation under Ohio Administrative Code 3745-1, which describes the assemblage the water holds rather than the temperature it runs at — so this river draws grey on the map above, and grey here means unmeasured rather than warm. The only temperature on this page is the live reading from the nearest USGS gauge, 0.0 miles away; it is a reading of that water, not this one.
The lake run
The Grand River is a Lake Erie tributary with 31.5 miles of run corridor on it — salmon, steelhead and lake-run brown trout, on their own calendar and under their own rules. Run timing, species and access on the Grand River →
Questions about this river
- Grand River fishing report — what it reads right now
- How to get to the Grand River — access, parking and public land
- Grand River fishing regulations — season, size and gear by reach
Ohio EPA classification
Ohio EPA classifies this water as Coldwater Habitat, Exceptional Warmwater Habitat, and Warmwater Habitat. More than one class appears because the classification changes along the river.Where it changes is on the map above, not in this page's tables: Ohio EPA publishes no temperature classification here, so nothing on this page is drawn from the class.This is Ohio EPA's description of the aquatic community the water supports, assigned under OAC 3745-1 on fish and macroinvertebrate survey scores. It is not the season and creel rules — those are the ODNR Division of Wildlife's, change yearly, and live with that agency.
Ohio EPA water quality standards, OAC 3745-1 →
Public land on the river
4 units of public or open-access land touch this river, 8,612 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Farley Property | county land | 111 |
| Grand River Wildlife Area | Division of Wildlife | 8,402 |
| Camp Chickagami | land trust or conservancy | 71 |
| Bsa Camp | land trust or conservancy | 28 |
Species
Ohio EPA designates this as trout water — Coldwater Habitat, Exceptional Warmwater Habitat, Warmwater Habitat — without naming the species. No fish survey or stocking record for this water is in the files this site reads.
Tributaries and watershed
Grand River sits in HUC 8 04110004, the Grand basin, and drains 203 square miles, Strahler order 5 at the mouth. 200 NHD reaches carry the name for 124.1 miles in total — more than the 17.0 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.