Lake Laretta
Nelson County, WisconsinEutrophic
Lake Laretta is a productive, nutrient-rich eutrophic lake in Nelson County, ND. Water quality is graded D based on 3 sampling years through 2023. Compared to the 8 other monitored lakes in Nelson County, Lake Laretta ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-10-16. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 3.8 ft. Phosphorus level: 266 µg/L. Chlorophyll-a: 21.7 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.8 ft | D |
| Phosphorus | 266 µg/L | F |
| Chlorophyll-a (Algae) | 21.7 µg/L | D |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #6 of 9 lakes in Nelson County
Cleaner Lakes Within 30 Miles
Lake Laretta holds Grade D. 2 nearby lakes hold higher grades.
- DWest Stump LakeNelson County · 16.2 mi · Higher overall water quality score
- DEast Stump LakeNelson County · 16.2 mi · Higher overall water quality score
Nearby Lakes in Nelson County
More Wisconsin Lake Rankings
Other Grade D 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: 2023-10-16
Monitoring stations: 1