LivewellSouth Dakota · McCook/Minnehaha County · Lake
North Island Lake
Is the fish you caught here safe to eat? Below is every consumption advisory on file for North Island Lake, by species and size, in plain English — plus what's legal to keep.
2 species with advisories · contaminants: Mercury
What's safe to eat from North Island Lake
Smallmouth Bass
| Size | Who | Guidance |
|---|---|---|
| Over 19" | General population | Limit to one meal per month due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Walleye
| Size | Who | Guidance |
|---|---|---|
| Over 18" | 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 South Dakota'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 |
|---|---|---|---|---|
| Walleye | — | 4 | Year-round | Same as open |
| Sauger | — | 4 | Year-round | Same as open |
| Northern Pike | — | 6 | Year-round | Same as open |
| Largemouth Bass | — | 5 | Year-round | Same as open |
| Smallmouth Bass | — | 5 | Year-round | Same as open |
| Yellow Perch | — | 15 | Year-round | Same as open |
| Black Crappie | — | 15 | Year-round | Same as open |
| White Crappie | — | 15 | Year-round | Same as open |
| Bluegill | — | 15 | Year-round | Same as open |
| Channel Catfish | — | 10 | Year-round | Same as open |
| Chinook Salmon | — | 5 | Year-round | Same as open |
| Rainbow Trout | — | 5 | Year-round | Same as open |
| Lake Trout | — | 5 | Year-round | Same as open |
| Muskellunge | — | 0 | Year-round | Same as open |
Official rules: South Dakota — South Dakota GFP