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Ohio · River

Little Miami River

Is the fish you caught here safe to eat? Below is every consumption advisory on file for Little Miami River, by species and size, in plain English — plus what's legal to keep.

5 species with advisories · contaminants: Mercury

Ohio also has statewide guidance

Ohio publishes rules that apply to rivers across the state — 11 recommendations covering 11 species — in addition to anything listed for Little Miami River below.

Strictest statewide rule: Flathead Catfish, Over 23" — Limit to one meal per month due to elevated Mercury.

See all Ohio statewide guidance →

What's safe to eat from Little Miami River

Common Carp

Mercury

SizeWhoGuidance
Over 24" General population Limit to one meal per month due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Freshwater Drum

Mercury

SizeWhoGuidance
Over 16" General population Limit to one meal per month due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Sauger

Mercury

SizeWhoGuidance
All sizes General population Limit to one meal per month due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Silver Redhorse

Mercury

SizeWhoGuidance
All sizes General population Limit to one meal per month due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Smallmouth Bass

Mercury

SizeWhoGuidance
All sizes General population Limit to one meal per month due to elevated Mercury.

Source: official advisory· updated 2026-09-22

Is it legal to keep?

These are Ohio's statewide limits — a water-specific rule may override them. Always verify the current regulations before keeping a fish.

SpeciesSizeDaily limitOpen seasonKeep season
Largemouth Bass 12" min 5 Year-round Same as open
Smallmouth Bass 12" min 5 Year-round Same as open
Walleye 15" min 6 Year-round Same as open
Muskellunge 30" min 1 Year-round Same as open
Northern Pike 6 Year-round Same as open
Channel Catfish 6 Year-round Same as open

Official rules: Ohio — Ohio DNR

Getting on the water

Access points from OpenStreetMap contributors.

About this water

State
Ohio
Type
River
Location
39.3645, -84.2024
Advisory source
Ohio EPA / Ohio Dept. of Health — Ohio Sport Fish Consumption Advisory