How Clean Is Diamond Lake?
Diamond Lake is algae-prone, with a higher bloom risk in warm months. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 1.7 ft. Phosphorus: 162.2 µg/L. Chlorophyll-a (algae): 66.5 µg/L. Trophic State Index: 73.
Cleanliness Snapshot
| Metric | Diamond Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 1.7 ft | — |
| Phosphorus | 162.2 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 66.5 µg/L | <10 = clean |
| Trophic State Index | 73 | <50 = clean |
How does Diamond Lake compare?
Diamond Lake's readings run above the Minnesota state average. It ranks #66 of 81 lakes in Hennepin County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 5 years of records.
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