B
Mattson Lake
Chisago County, Minnesota
Water Quality Grade: B — Good
Murky — only visible to about 3.9 feet. Phosphorus level: 16 µg/L. Chlorophyll-a: 5.2 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 m | D |
| Phosphorus | 16 µg/L | A |
| Chlorophyll-a (Algae) | 5.2 µg/L | B |
County Ranking
Ranked #13 of 38 lakes in Chisago County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-28
Monitoring stations: 1