How Clean Is Lake Ashtabula?
Lake Ashtabula is a clean lake by North Dakota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 3.4 ft. Chlorophyll-a (algae): 3.3 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Lake Ashtabula | North Dakota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 3.4 ft | — |
| Chlorophyll-a (Algae) | 3.3 µg/L | <10 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Lake Ashtabula compare?
Lake Ashtabula's grade of B matches or beats the North Dakota state average of C. It ranks #1 of 4 lakes in Barnes County by water quality score.