A
Portage Bay Lake
Cass County, Minnesota
Water Quality Grade: A — Excellent
Good clarity — visible to about 11.3 feet. Chlorophyll-a: 4.9 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.43 m | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 4.9 µg/L | A |
County Ranking
Ranked #89 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: 2023-09-07
Monitoring stations: 1