How Clean Is Twin Lakes?
Twin Lakes is among the cleanest lakes in North Dakota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 14.1 ft. Chlorophyll-a (algae): 3.2 µg/L. Trophic State Index: 40.
Cleanliness Snapshot
| Metric | Twin Lakes | North Dakota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 14.1 ft | — |
| Chlorophyll-a (Algae) | 3.2 µg/L | <10 = clean |
| Trophic State Index | 40 | <50 = clean |
How does Twin Lakes compare?
Twin Lakes's grade of A matches or beats the North Dakota state average of C. It ranks #1 of 4 lakes in LaMoure County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.