How Clean Is Irving Lake?
Irving 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): 5.3 ft. Phosphorus: 30 µg/L. Trophic State Index: 53.
Cleanliness Snapshot
| Metric | Irving Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 5.3 ft | — |
| Phosphorus | 30 µg/L | <30 = clean |
| Trophic State Index | 53 | <50 = clean |
How does Irving Lake compare?
Irving Lake's grade of C matches or beats the Minnesota state average of C. It ranks #77 of 86 lakes in Beltrami County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.