How Clean Is Long Interlaken Lake?
Long Interlaken Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 59.1 ft. Trophic State Index: 18.
Cleanliness Snapshot
| Metric | Long Interlaken Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 59.1 ft | — |
| Trophic State Index | 18 | <50 = clean |
How does Long Interlaken Lake compare?
Long Interlaken Lake's grade of A matches or beats the Wisconsin state average of B. It ranks #83 of 202 lakes in Vilas County by water quality score. Multi-year monitoring data shows water quality is declining based on 6 years of records.