Kewaunee County Lake Quality
Wisconsin, 4 lakes, average grade B (Good)
Kewaunee County has 4 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. East Alaska Lake (B) is the cleanest in the county.
Quick Answers for Kewaunee County
Planning a trip? Check special fishing regulations for East Alaska Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
DNR Reports (7)
Wisconsin DNR Fisheries Survey resources for lakes in Kewaunee County. browse all reports →
- 2025Shea Lake spring survey, 2025Fisheries Survey · WI DNR · 2025 (PDF)
- 2024East Alaska Lake spring survey, 2024Fisheries Survey · WI DNR · 2024 (PDF)
- 2021Krohns Lake spring shocking survey, 2021Spring Shocking Survey · WI DNR · 2021 (PDF)
- 2019West Alaska Lake spring survey 2019Fisheries Survey · WI DNR · 2019 (PDF)
- 2017East Alaska Lake spring survey 2017Fisheries Survey · WI DNR · 2017 (PDF)
- 2017Shea Lake spring survey 2017Fisheries Survey · WI DNR · 2017 (PDF)
- 2016Heidman (Bolt) Lake spring survey 2016Fisheries Survey · WI DNR · 2016 (PDF)
All Lakes in Kewaunee County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | East Alaska Lake | B | 9 ft | 50 ft | 16.4 µg/L |
| 2 | Krohns Lake | B | 8 ft | 38 ft | 11.6 µg/L |
| 3 | West Alaska Lake | B | 8.5 ft | 41 ft | 14.1 µg/L |
| 4 | Sheas Lake | D | 5.4 ft | 24 ft | - |
Source: EPA National Aquatic Resource Surveys, 2026.