How Clean Is Lake Darling?
Lake Darling 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): 4.9 ft. Chlorophyll-a (algae): 2.4 µg/L. Trophic State Index: 47.
Cleanliness Snapshot
| Metric | Lake Darling | North Dakota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 4.9 ft | — |
| Chlorophyll-a (Algae) | 2.4 µg/L | <10 = clean |
| Trophic State Index | 47 | <50 = clean |
How does Lake Darling compare?
Lake Darling's grade of B matches or beats the North Dakota state average of C. It ranks #1 of 3 lakes in Renville County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.