St. Croix County Wisconsin Fishing
8 documented fish species across 3 St. Croix County lakes.
Panfish
Catfish & Bullhead
Other Species
St. Croix County Fishing Lakes
| Lake | Grade | Clarity | Max Depth | Species |
|---|---|---|---|---|
| Lake St Croix | B | 5.6 ft | 60 ft | 7 |
| Apple Lake | D | 2.5 ft | 32 ft | 4 |
| Lake Mallalieu | D | 2.8 ft | 17 ft | 4 |
St. Croix County water quality
DNR Survey Reports
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2025Cedar Lake comprehensive spring survey, 2025Comprehensive Survey · WI DNR · 2025 (PDF)
- 2025Hatfield Lake spring shocking survey, 2025Spring Shocking Survey · WI DNR · 2025 (PDF)
- 2025Lake George spring survey, 2025Fisheries Survey · WI DNR · 2025 (PDF)
- 2025Little Falls Lake spring shocking survey, 2025Spring Shocking Survey · WI DNR · 2025 (PDF)
- 2025Twin Lakes northern pike stocking assessment survey, 2025Fisheries Survey · WI DNR · 2025 (PDF)
- 2024Apple Lake spring survey, 2024Fisheries Survey · WI DNR · 2024 (PDF)
- 2021Cedar Lake spring survey, 2021Fisheries Survey · WI DNR · 2021 (PDF)
- —Population assessment of lake sturgeon in the upper St. Croix River, Minnesota and Wisconsin 2003-2011Fisheries Survey · WI DNR (PDF)
- —St. Croix River catfish survey, 2020-2024Fisheries Survey · WI DNR (PDF)
Where to stay in St. Croix County
Top-rated places to stay near St. Croix County, Wisconsin
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Frequently Asked Questions
What fish are in St. Croix County lakes?
St. Croix County, Wisconsin has 8 documented fish species across 3 lakes, including Largemouth Bass, Northern Pike, Smallmouth Bass, Walleye, Panfish.
What is the best-graded fishing lake in St. Croix County?
Lake St Croix holds the highest water-quality grade (B) among St. Croix County lakes with a documented fishery.