B
Spider Lake
Chisago County, Minnesota
Water Quality Grade: B — Good
Murky — only visible to about 6.0 feet. Phosphorus level: 21 µg/L. Chlorophyll-a: 3 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.83 m | D |
| Phosphorus | 21 µg/L | B |
| Chlorophyll-a (Algae) | 3 µg/L | A |
County Ranking
Ranked #9 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