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Trout fishing near Mansfield, Ohio

Last updated 2026-09-24 · water classified by Ohio EPA

Ohio EPA designates 320 named streams as coldwater or seasonal salmonid habitat within 40 miles of Mansfield, Ohio — 2949.6 miles of it inside that circle. The most of it is Sandusky River, 13.4 miles out, with 77.7 classified miles that Ohio EPA designates as Warmwater Habitat. The closest is Black Fork Mohican River at 4.9 miles. A designation is Ohio EPA's statement about the water, not a record of a fish in it and not permission to stand on the bank — check access and the current regulations before you go.

The trout water within 40 miles of Mansfield

Ranked by how much classified water lies inside the circle, and by nothing else. Distance is a straight line to the nearest point of the stream rather than to its middle, because the question is how far you drive before you can park — this app carries no road network and will not print a drive time it cannot compute. A stream that runs out of the circle is counted for the part that is inside it, never for its whole length.

Stream Miles out Classified miles Ohio EPA use Size
Sandusky River part of the stream 13.4 77.7 Warmwater Habitat river
Killbuck Creek part of the stream 28.1 75.6 Warmwater Habitat medium stream
Kokosing River 15.9 63.5 Exceptional Warmwater Habitat medium stream
Black Fork Mohican River 4.9 61.2 Warmwater Habitat creek
Olentangy River part of the stream 11 56.6 Warmwater Habitat medium stream
West Branch Huron River 14.2 54.2 Warmwater Habitat medium stream
Vermilion River part of the stream 15.6 52.1 Warmwater Habitat medium stream
East Branch Black River part of the stream 22.6 47.4 Warmwater Habitat medium stream

320 named streams clear the circle in all and the 8 holding the most classified water are named. The rest carry less water than something a reader would pass on the way to it.

A stream marked part of the stream carries classified water outside the circle too, and the mileage here is only what is inside it. There is no thermal column, because Ohio EPA publishes no thermal class. What it publishes is the aquatic life use designations of Ohio Administrative Code 3745-1 — and Chapter 6264 is a timber-harvest and watershed-permitting rule, so a reach being listed under it says the legislature protected the watershed, not that anybody measured the water in July. Rather than infer a temperature from a land-use statute, this page leaves the column out.

What Ohio EPA is saying, and what it is not

Every row above is on the list because Ohio Environmental Protection Agency publishes the aquatic life use designations of Ohio Administrative Code 3745-1. That is the reach carrying Ohio EPA's coldwater habitat use under OAC 3745-1-07(B)(1)(f), or its seasonal salmonid habitat use under (B)(1)(e) — the Erie tributary designation, which the rule puts in effect from October to May and replaces with another use from June to September. Neither is a temperature: Ohio publishes no thermal classification, and the coldwater use covers both water holding native coldwater fauna and water the Division of Wildlife runs a trout programme on that could be restored to coldwater. Warmwater, exceptional warmwater, modified warmwater and limited resource reaches are not counted here. It is not a record of a fish caught there, it is not a promise about any particular day, and it is not permission to walk to the bank — the land beside a classified stream can be private, and in most of these five states most of it is.

Getting to the water

This site has no access pages in Ohio yet, so this page names none. That is an absence in what has been built rather than an absence of places to fish, and an invented list would be worse than this sentence. Check Ohio EPA for access, and read the boundary of any land you cross — a stream being classified says nothing about who owns the bank.

Thermometers in range

USGS gauges within 40 miles that report water temperature, nearest first. Federal rather than the state's, so one may stand across a state line. No reading is printed here — this page is about where the water is, and a temperature on it would be true only of the minute it was built. The river pages carry the live numbers.

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Open this water on the map →Every reach around it coloured by today's water temperature, with the access points along it.