How Clean Is Sand Lake?
Sand 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): 4.1 ft. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 8 µg/L. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Sand Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 4.1 ft | — |
| Phosphorus | 22 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 8 µg/L | <10 = clean |
| Trophic State Index | 52 | <50 = clean |
How does Sand Lake compare?
Sand Lake's grade of C matches or beats the Minnesota state average of C. It ranks #28 of 35 lakes in Lake County by water quality score.