B
Long Lake
Sherburne County, Minnesota
Water Quality Grade: B — Good
Moderate clarity — visible to about 7.5 feet. Phosphorus level: 25 µg/L. Chlorophyll-a: 9.7 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.29 m | C |
| Phosphorus | 25 µg/L | B |
| Chlorophyll-a (Algae) | 9.7 µg/L | B |
County Ranking
Ranked #14 of 26 lakes in Sherburne County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-20
Monitoring stations: 2