Lake Petocka
Polk County, WisconsinEutrophic
Lake Petocka is a productive, nutrient-rich eutrophic lake in Polk County, IA. Water quality is graded C based on 2 sampling years through 2024. Compared to the 11 other monitored lakes in Polk County, Lake Petocka ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-11. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Chlorophyll-a: 9.3 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 9.3 µg/L | B |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #2 of 12 lakes in Polk County
Cleaner Lakes Within 30 Miles
Lake Petocka holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Polk County
More Wisconsin Lake Rankings
Other Grade C 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: 2024-09-11
Monitoring stations: 1