B
Sarah Lake
Polk County, Minnesota
Water Quality Grade: B — Good
Moderate clarity — visible to about 7.9 feet. Phosphorus level: 29.5 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.4 m | C |
| Phosphorus | 29.5 µg/L | B |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #6 of 22 lakes in Polk County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-24
Monitoring stations: 1