How Clean Is Clark Lake?
Clark Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 6.8 ft. Trophic State Index: 50.
Cleanliness Snapshot
| Metric | Clark Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 6.8 ft | — |
| Trophic State Index | 50 | <50 = clean |
How does Clark Lake compare?
Clark Lake's grade of C matches or beats the Minnesota state average of C. It ranks #112 of 159 lakes in Lake County by water quality score. Multi-year monitoring data shows water quality is declining based on 4 years of records.