How Clean Is Elbow Lake?
Elbow Lake is a clean lake by Minnesota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 3.7 ft. Phosphorus: 19 µg/L. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Elbow Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 3.7 ft | — |
| Phosphorus | 19 µg/L | <30 = clean |
| Trophic State Index | 52 | <50 = clean |
How does Elbow Lake compare?
Elbow Lake's grade of B matches or beats the Minnesota state average of C. It ranks #69 of 128 lakes in Cook County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.