Powers Lake
Mountrail County, WisconsinEutrophic
Powers 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, Powers Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-05-21. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5.6 ft. Chlorophyll-a: 7.9 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 7.9 µg/L | B |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #1 of 5 lakes in Mountrail County
Cleaner Lakes Within 30 Miles
Powers Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Mountrail County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
EPA Impairment Status
Powers Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit ND-10110101-001-L_00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-05-21
Monitoring stations: 1