Western Stump Lake
Nelson County, WisconsinEutrophic
Western Stump Lake is a productive, nutrient-rich eutrophic lake in Nelson County, ND. Water quality is graded F based on 3 sampling years through 2023. Compared to the 8 other monitored lakes in Nelson County, Western Stump Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-10-11. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Murky, only visible to about 4.3 ft. Phosphorus level: 154.5 µg/L. Chlorophyll-a: 36.7 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | 154.5 µg/L | F |
| Chlorophyll-a (Algae) | 36.7 µg/L | F |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #7 of 9 lakes in Nelson County
Cleaner Lakes Within 30 Miles
Western Stump Lake holds Grade F. 4 nearby lakes hold higher grades.
- CEast Devils LakeRamsey County · 12.2 mi · Two grade letters higher (F → C)
- DWest Stump LakeNelson County · 2.2 mi · Higher grade (F → D)
- DEast Stump LakeNelson County · 3.4 mi · Higher grade (F → D)
- DLake LarettaNelson County · 14.4 mi · Higher grade (F → D)
Nearby Lakes in Nelson County
More Wisconsin Lake Rankings
Other Grade F 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: 2023-10-11
Monitoring stations: 1