Green Lake
McIntosh County, WisconsinLimited DataEutrophic
Green Lake is a 906-acre productive, nutrient-rich eutrophic lake in McIntosh County, ND. Water quality is graded D based on 1 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-04-29. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 4.9 ft. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 906 acres |
Location
County Ranking
Ranked #1 of 1 lakes in McIntosh County
Cleaner Lakes Within 30 Miles
Green Lake holds Grade D. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in McIntosh County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Green Lake is a man-made reservoir impounded by the Green Lake Outlet Control (completed 1973), built primarily for recreation on the Pudwill Lake-TR; earth-type dam, 7 ft tall and 856 ft long.
- Surface area
- 906 ac
- Normal storage
- 5,436 ac-ft
- Max storage
- 8,622 ac-ft
- Drainage area
- 51 sq mi
- Hazard class
- Low
- Owner
- McIntosh County WRB
Source: USACE National Inventory of Dams, NID ID ND00373 · Operator website · Matched by proximity (0.85 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-04-29
Monitoring stations: 1