Marquette County Lake Quality
Wisconsin, 13 lakes, average grade B (Good)
Only 13 lakes in Marquette County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. With an average grade of B, Marquette County sits comfortably above the Wisconsin median.
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 White Lake (A); the most-stressed is Buffalo Lake (F).
Quick Answers for Marquette County
Planning a trip? Check special fishing regulations for White 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 Marquette County. browse all reports →
- 2024Montello Lake spring shocking survey, 2024Spring Shocking Survey · WI DNR · 2024 (PDF)
- 2023Harrisville Pond spring shocking survey, 2023Spring Shocking Survey · WI DNR · 2023 (PDF)
- 2023Lawrence Pond spring shocking survey, 2023Spring Shocking Survey · WI DNR · 2023 (PDF)
- 2022Neshkoro Millpond comprehensive survey, 2022Comprehensive Survey · WI DNR · 2022 (PDF)
- 2022Twin Lakes spring shocking survey, 2022Spring Shocking Survey · WI DNR · 2022 (PDF)
- 2021School Section Lake spring shocking survey, 2021Spring Shocking Survey · WI DNR · 2021 (PDF)
- 2018Moon Lake spring summary, 2018Fisheries Survey · WI DNR · 2018 (PDF)
All Lakes in Marquette County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | White Lake | A | 17 ft | 60 ft | 10.8 µg/L |
| 2 | Crystal Lake | A | 16.8 ft | 60 ft | 11.5 µg/L |
| 3 | Wood Lake | A | 14 ft | 53 ft | 10.9 µg/L |
| 4 | Fenner Lake | A | 12 ft | 18 ft | 16.8 µg/L |
| 5 | Tuttle Lake | A | 11.5 ft | 33 ft | 15.8 µg/L |
| 6 | Lake Sharon | B | 9 ft | 30 ft | 11.5 µg/L |
| 7 | Lawrence Lake | B | 6.7 ft | 14 ft | 25.2 µg/L |
| 8 | East Twin Lake | B | 3.3 ft | 8 ft | 18.1 µg/L |
| 9 | Sandy Lake | C | 8 ft | - | - |
| 10 | Williams Lake | C | 6 ft | - | 21.4 µg/L |
| 11 | West Twin Lake | C | 4.9 ft | 24 ft | 53.2 µg/L |
| 12 | Lake Montello | D | 6.1 ft | 17 ft | - |
| 13 | Buffalo Lake | F | 2.5 ft | 8 ft | 125.5 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.