How Clean Is Manitowish Lake?
Manitowish Lake does not have enough monitoring data to grade. Its EPA monitoring record does not meet the evidence bar for a letter grade, so it is published unrated — that is an absence of evidence, not a poor result. The measurements below are what the record does contain. Water clarity (Secchi depth): 12.5 ft. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | Manitowish Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | NR | B |
| Water Clarity (Secchi) | 12.5 ft | — |
| Trophic State Index | 41 | <50 = clean |
How does Manitowish Lake compare?
Manitowish Lake is not rated for water quality — its monitoring record does not meet the evidence bar, so it is not compared with the Wisconsin state average.