LivewellOhio · Lake
Delaware Lake
Is the fish you caught here safe to eat? Below is every consumption advisory on file for Delaware Lake, by species and size, in plain English — plus what's legal to keep.
5 species with advisories · contaminants: Arsenic, Mercury, PCBs
Ohio also has statewide guidance
Ohio publishes rules that apply to lakes across the state — 11 recommendations covering 11 species — in addition to anything listed for Delaware Lake below.
Strictest statewide rule: Flathead Catfish, Over 23" — Limit to one meal per month due to elevated Mercury.
What's safe to eat from Delaware Lake
Black Crappie
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to one meal per week due to elevated Arsenic. |
Source: official advisory· updated 2026-09-22
Bluegill Sunfish
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to two meals per week due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Channel Catfish
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to one meal per week due to elevated PCB. |
Source: official advisory· updated 2026-09-22
Common Carp
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to two meals per week due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Largemouth Bass
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to one meal per week due to elevated Arsenic and Mercury. |
Source: official advisory· updated 2026-09-22
How to prepare fish from Delaware Lake
Some contaminants build up in fat and skin, so cleaning and cooking can lower your exposure. Others — mercury and PFAS — are in the muscle itself and trimming does nothing.
PCBs
- Skin the fish — most of the contaminant sits in the fat just under the skin.
- Trim the fatty areas away: the belly flap, the top of the back, and the dark lateral line down each side.
- Cook on a rack — grill, broil, or bake — so the fat drips off the fillet.
- Throw the drippings out; don't use them for soup, sauce, or chowder.
- Choose smaller, younger fish — they've had less time to build it up.
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.
| Species | Size | Daily limit | Open season | Keep 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