B
Graham Lake
Otter Tail County, Minnesota
Water Quality Grade: B — Good
Moderate clarity — visible to about 8.4 feet. Phosphorus level: 25.5 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.55 m | C |
| Phosphorus | 25.5 µg/L | B |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #87 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: 2023-07-17
Monitoring stations: 1