B
Portage Lake
Cass County, Minnesota
Water Quality Grade: B — Good
Moderate clarity — visible to about 7.0 feet. Chlorophyll-a: 5.5 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.13 m | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 5.5 µg/L | B |
County Ranking
Ranked #138 of 154 lakes in Cass County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-10
Monitoring stations: 1