How Clean Is Norway Lake?
Norway 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): 6.9 ft. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 5.1 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Norway Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 6.9 ft | — |
| Phosphorus | 21 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 5.1 µg/L | <10 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Norway Lake compare?
Norway Lake's grade of A matches or beats the Minnesota state average of C. It ranks #9 of 104 lakes in Cass County by water quality score. Multi-year monitoring data shows water quality is declining based on 3 years of records.
Watch Norway Lake water quality
Get an email when the grade, clarity, or algae reading changes. Unsubscribe anytime.