A
Lower Birch Lake
Isanti County, Minnesota
Water Quality Grade: A — Excellent
Good clarity — visible to about 10.8 feet. Phosphorus level: 15 µg/L. Chlorophyll-a: 2.1 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 m | B |
| Phosphorus | 15 µg/L | A |
| Chlorophyll-a (Algae) | 2.1 µg/L | A |
County Ranking
Ranked #1 of 21 lakes in Isanti County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-05-22
Monitoring stations: 1