Shawano County Lake Quality
Wisconsin, 27 lakes, average grade B (Good)
Shawano County's 27 graded lakes fall in the moderate-density bracket for Wisconsin. The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Round Lake (A); the most-stressed is Tilleda Off Bridge Lake (F).
Quick Answers for Shawano County
Planning a trip? Check special fishing regulations for Round Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
DNR Reports (6)
Wisconsin DNR Fisheries Survey resources for lakes in Shawano County. browse all reports →
- 2025Koonz and Beaulieu lakes shocking survey, 2025Fisheries Survey · WI DNR · 2025 (PDF)
- 2023Shawano Lake comprehensive summary, 2023Comprehensive Survey · WI DNR · 2023 (PDF)
- 2022Kolpack Lake spring shocking survey, 2022Spring Shocking Survey · WI DNR · 2022 (PDF)
- 2022Pella Pond spring netting survey, 2022Netting Survey · WI DNR · 2022 (PDF)
- 2021Cloverleaf Chain shocking survey, 2021Fisheries Survey · WI DNR · 2021 (PDF)
- 2021White Clay Lake comprehensive fisheries survey, 2021Comprehensive Survey · WI DNR · 2021 (PDF)
All Lakes in Shawano County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Round Lake | A | 29.5 ft | 39 ft | 14.8 µg/L |
| 2 | Big Lake | A | 24.6 ft | - | 15 µg/L |
| 3 | Pine Lake | A | 32.8 ft | 35 ft | 13.6 µg/L |
| 4 | Beauleau Lake | A | 31.2 ft | 24 ft | - |
| 5 | Bahr Lake | A | 30.8 ft | 44 ft | 17.9 µg/L |
| 6 | Pensaukee Lake | A | 39.4 ft | 49 ft | - |
| 7 | Grass Lake | A | 28.7 ft | 52 ft | 15.7 µg/L |
| 8 | Lulu Lake | A | 23 ft | 13 ft | 16.4 µg/L |
| 9 | Koonz Lake | A | 34.5 ft | 40 ft | 12 µg/L |
| 10 | Korth Lake | A | 39.4 ft | 48 ft | 13.5 µg/L |
| 11 | Malone Lake | A | 44.3 ft | 31 ft | 16 µg/L |
| 12 | Sams Lake | A | 36.1 ft | - | 18 µg/L |
| 13 | Mission Lake | A | 57.4 ft | 44 ft | 17 µg/L |
| 14 | Bealeau Lake | A | 37.7 ft | 24 ft | 16 µg/L |
| 15 | Unknown Lake | A | 16.4 ft | - | 14.8 µg/L |
| 16 | Long Lake | A | 19.7 ft | 35 ft | 22.3 µg/L |
| 17 | Shawano Lake | A | 19.4 ft | 39.5 ft | 29.6 µg/L |
| 18 | Loon Lake | A | 18 ft | 22 ft | 21.5 µg/L |
| 19 | White Lake | B | 17.6 ft | 11 ft | 32.8 µg/L |
| 20 | White Clay Lake | B | 16.4 ft | 46 ft | 31.6 µg/L |
| 21 | Schoenick Lake at | B | 16.4 ft | 34 ft | 45.3 µg/L |
| 22 | Upper Red Lake | B | 24.6 ft | 15 ft | 39.2 µg/L |
| 23 | Wagner Lake | B | 13.1 ft | 15 ft | 52 µg/L |
| 24 | Eddy by Pony Creek Lake | C | 1.6 ft | 11 ft | 1.4 µg/L |
| 25 | Pella Lake | C | 8.2 ft | 13 ft | 63.7 µg/L |
| 26 | Tilleda Pond | D | - | 11 ft | 64.4 µg/L |
| 27 | Tilleda Off Bridge Lake | F | 1.6 ft | 11 ft | 525 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.