Terry Trueblood Lake
Johnson County, WisconsinHypereutrophic
Terry Trueblood Lake is a highly nutrient-loaded hypereutrophic lake in Johnson County, IA. Water quality is graded F based on 2 sampling years through 2024. Compared to the 2 other monitored lakes in Johnson County, Terry Trueblood Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-10. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.1 ft of visibility. Chlorophyll-a: 54.9 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.1 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 54.9 µg/L | F |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #3 of 3 lakes in Johnson County
Cleaner Lakes Within 30 Miles
Terry Trueblood Lake holds Grade F. 2 nearby lakes hold higher grades.
- CKent Park LakeJohnson County · 12.4 mi · Two grade letters higher (F → C)
- DLake MacbrideJohnson County · 12 mi · Higher grade (F → D)
Nearby Lakes in Johnson County
More Wisconsin Lake Rankings
Other Grade F 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: 2024-09-10
Monitoring stations: 1