A
Marion Lake
Otter Tail County, Minnesota
Water Quality Grade: A — Excellent
Good clarity — visible to about 11.0 feet. Phosphorus level: 18 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.35 m | B |
| Phosphorus | 18 µg/L | A |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #32 of 109 lakes in Otter Tail County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-24
Monitoring stations: 3