How Clean Is North Star Lake?
North Star Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 19 ft. Phosphorus: 10.5 µg/L. Chlorophyll-a (algae): 1.5 µg/L. Trophic State Index: 36.
Cleanliness Snapshot
| Metric | North Star Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 19 ft | — |
| Phosphorus | 10.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 1.5 µg/L | <10 = clean |
| Trophic State Index | 36 | <50 = clean |
How does North Star Lake compare?
North Star Lake's grade of A matches or beats the Minnesota state average of C. It ranks #19 of 72 lakes in Itasca County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.