How Clean Is Linwood Lake?
Linwood 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): 3.9 ft. Phosphorus: 42.5 µg/L. Chlorophyll-a (algae): 19.1 µg/L. Trophic State Index: 58.
Cleanliness Snapshot
| Metric | Linwood Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 3.9 ft | — |
| Phosphorus | 42.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 19.1 µg/L | <10 = clean |
| Trophic State Index | 58 | <50 = clean |
How does Linwood Lake compare?
Linwood Lake's grade of C matches or beats the Minnesota state average of C. It ranks #11 of 24 lakes in Anoka County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.