Fulton County Lake Quality
Wisconsin, 7 lakes, average grade B (Good)
Only 7 lakes in Fulton 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. 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. E Caroga Lake (B) is the cleanest in the county.
Quick Answers for Fulton County
Planning a trip? Check special fishing regulations for E Caroga Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Fulton County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | E Caroga Lake | B | 10.5 ft | - | - |
| 2 | W Caroga Lake | B | 11.3 ft | - | - |
| 3 | East Caroga Lake | B | 13.6 ft | - | - |
| 4 | Canada Lake | B | 13.8 ft | - | - |
| 5 | Peck Lake | B | 11.9 ft | - | - |
| 6 | West Caroga Lake | B | 12.9 ft | - | - |
| 7 | Pleasant Lake | B | 13.4 ft | - | - |
Source: EPA National Aquatic Resource Surveys, 2026.