Clearwater Lake
Mountrail County, WisconsinEutrophic
Clearwater Lake is a productive, nutrient-rich eutrophic lake in Mountrail County, ND. Water quality is graded C based on 2 sampling years through 2024. Compared to the 4 other monitored lakes in Mountrail County, Clearwater Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-10-03. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 2.1 ft of visibility. Chlorophyll-a: 4.1 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.1 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 4.1 µg/L | A |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #3 of 5 lakes in Mountrail County
Nearby Lakes in Mountrail County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-03
Monitoring stations: 1