How Clean Is Washington Lake?
Washington Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 4.5 ft. Phosphorus: 32.5 µg/L. Chlorophyll-a (algae): 11.6 µg/L. Trophic State Index: 55.
Cleanliness Snapshot
| Metric | Washington Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 4.5 ft | — |
| Phosphorus | 32.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 11.6 µg/L | <10 = clean |
| Trophic State Index | 55 | <50 = clean |
How does Washington Lake compare?
Washington Lake's grade of C matches or beats the Minnesota state average of C. It ranks #3 of 19 lakes in Meeker County by water quality score. Multi-year monitoring data shows water quality is stable based on 6 years of records.