How Clean Is Spike Lake?
Spike 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): 8.5 ft. Phosphorus: 30.5 µg/L. Trophic State Index: 50.
Cleanliness Snapshot
| Metric | Spike Lake | Minnesota avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 8.5 ft | — |
| Phosphorus | 30.5 µg/L | <30 = clean |
| Trophic State Index | 50 | <50 = clean |
How does Spike Lake compare?
Spike Lake's grade of C matches or beats the Minnesota state average of C. It ranks #36 of 40 lakes in Clearwater County by water quality score. Multi-year monitoring data shows water quality is stable based on 2 years of records.