B
Murphy Lake
St. Louis County, Minnesota
Water Quality Grade: B — Good
Murky — only visible to about 5.2 feet. Phosphorus level: 18 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 m | D |
| Phosphorus | 18 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #88 of 198 lakes in St. Louis County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-15
Monitoring stations: 1