D
Ludden Lake -
Iowa County, Wisconsin
Water Quality Grade: D — Poor
Murky — only visible to about 4.9 feet. Phosphorus level: 172 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 m | D |
| Phosphorus | 172 µg/L | F |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #6 of 6 lakes in Iowa County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-05-22
Monitoring stations: 1