Sweetwater Lake
Ramsey County, WisconsinHypereutrophic
Sweetwater Lake is a highly nutrient-loaded hypereutrophic lake in Ramsey County, ND. Water quality is graded D based on 3 sampling years through 2023. Compared to the 7 other monitored lakes in Ramsey County, Sweetwater Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-10-17. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2.9 ft of visibility. Phosphorus level: 593 µg/L. Chlorophyll-a: 10.7 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 ft | F |
| Phosphorus | 593 µg/L | F |
| Chlorophyll-a (Algae) | 10.7 µg/L | C |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #7 of 8 lakes in Ramsey County
Cleaner Lakes Within 30 Miles
Sweetwater Lake holds Grade D. 3 nearby lakes hold higher grades.
- CDevils LakeRamsey County · 10.5 mi · Higher grade (D → C)
- CDevils LakeBenson County · 18.3 mi · Higher grade (D → C)
- DPelican LakeRamsey County · 14.2 mi · Higher overall water quality score
Nearby Lakes in Ramsey County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Hypereutrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-10-17
Monitoring stations: 1