How Clean Is Patterson Lake?
Patterson Lake is a clean lake by North Dakota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Chlorophyll-a (algae): 7.8 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Patterson Lake | North Dakota avg |
|---|---|---|
| Overall Grade | B | C |
| Chlorophyll-a (Algae) | 7.8 µg/L | <10 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Patterson Lake compare?
Patterson Lake's grade of B matches or beats the North Dakota state average of C. It ranks #1 of 3 lakes in Stark County by water quality score.