How Clean Is Maple Lake?
Maple Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 5 ft. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Maple Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | D |
| Water Clarity (Secchi) | 5 ft | — |
| Trophic State Index | 54 | <50 = clean |
How does Maple Lake compare?
Maple Lake's grade of D matches or beats the Wisconsin state average of D. It ranks #21 of 68 lakes in Cook County by water quality score.