Ramsey County Lake Quality
Wisconsin, 8 lakes, average grade D (Poor)
Only 8 lakes in Ramsey 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. On average, Ramsey County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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 Devils Lake (C); the most-stressed is Morrison Lake (F).
Quick Answers for Ramsey County
Planning a trip? Check special fishing regulations for Devils Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Ramsey County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Devils Lake | C | 5.2 ft | - | - |
| 2 | East Devils Lake | C | 6.6 ft | - | - |
| 3 | Pelican Lake | D | 3.7 ft | - | - |
| 4 | Dry Lake | D | 2.8 ft | - | 639.5 µg/L |
| 5 | Lake Alice | D | 3.1 ft | - | 351.5 µg/L |
| 6 | Lake Irvine | D | 2.9 ft | - | 361 µg/L |
| 7 | Sweetwater Lake | D | 2.9 ft | - | 593 µg/L |
| 8 | Morrison Lake | F | 1.9 ft | - | 564.5 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.