Washington Lake
Jackson County, WisconsinEutrophic
Washington Lake is a productive, nutrient-rich eutrophic lake in Jackson County, MO. Water quality is graded F based on 2 sampling years through 2024. Compared to the 26 other monitored lakes in Jackson County, Washington Lake ranks #26 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-05. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 96.2 µg/L. Chlorophyll-a: 36.6 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 96.2 µg/L | F |
| Chlorophyll-a (Algae) | 36.6 µg/L | F |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #26 of 27 lakes in Jackson County
Cleaner Lakes Within 30 Miles
Washington Lake holds Grade F. 3 nearby lakes hold higher grades.
- CBlue Valley LakeJackson County · 4.2 mi · Two grade letters higher (F → C)
- DValley LakeJackson County · 1.8 mi · Higher grade (F → D)
- FLake of the Woods-KcJackson County · 6.9 mi · Higher overall water quality score
Nearby Lakes in Jackson County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
St. Louis County · Clarity: 1.6 ft
St. Charles County · Clarity: 2.3 ft
St. Francois County · Clarity: 1.1 ft
Saline County · Clarity: 2.3 ft
Polk County · Clarity: 1.2 ft
Callaway County · Clarity: 1.7 ft
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: 2024-09-05
Monitoring stations: 1