How Clean Is Third River Flowage Lake?
Third River Flowage Lake is a clean lake by Minnesota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 7.4 ft. Chlorophyll-a (algae): 5.5 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Third River Flowage Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 7.4 ft | — |
| Chlorophyll-a (Algae) | 5.5 µg/L | <10 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Third River Flowage Lake compare?
Third River Flowage Lake's grade of B matches or beats the Minnesota state average of C. It ranks #100 of 141 lakes in Itasca County by water quality score.