Mecosta County Lake Quality
Wisconsin, 12 lakes, average grade B (Good)
Only 12 lakes in Mecosta 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. Chippewa Lake Northeast Basin; Chippewa Township (A) is the cleanest in the county.
Quick Answers for Mecosta County
Planning a trip? Check special fishing regulations for Chippewa Lake Northeast Basin; Chippewa Township, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Mecosta County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Chippewa Lake Northeast Basin; Chippewa Township | A | 12.8 ft | - | - |
| 2 | Horsehead Lake Northwest Basin; Martiny Township | A | 10 ft | - | - |
| 3 | Blue Lake North Central Basin | A | 11 ft | - | - |
| 4 | Chippewa Lake | B | 11.5 ft | - | - |
| 5 | Mecosta Lake North Basin; Morton Township | B | 9 ft | - | - |
| 6 | Horsehead Lake | B | 11.5 ft | - | - |
| 7 | Blue Lake | B | 10 ft | - | - |
| 8 | Rogers Dam Pond; Central Basin; Mecosta Township | B | 11.5 ft | - | - |
| 9 | Round Lake North Basin | B | 9.5 ft | - | - |
| 10 | Round Lake | C | 8.5 ft | - | - |
| 11 | Lake Mecosta | C | 8.5 ft | - | - |
| 12 | Canadian Lake Southeast Basin; Morton Township | F | 3 ft | - | - |
Source: EPA National Aquatic Resource Surveys, 2026.