D
Forestville Flowage - Deep Hole Lake
Door County, WisconsinLimited Data
Water Quality Grade: D — Poor
Murky — only visible to about 4.9 feet.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #20 of 21 lakes in Door County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-28
Monitoring stations: 1