B
Rock Lake
Crow Wing County, Minnesota
Water Quality Grade: B — Good
Moderate clarity — visible to about 7.4 feet. Phosphorus level: 18 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.26 m | C |
| Phosphorus | 18 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #88 of 135 lakes in Crow Wing County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-09
Monitoring stations: 2