Fin And Feather Lake
Cerro Gordo County, WisconsinEutrophic
Fin And Feather Lake is a 16-acre productive, nutrient-rich eutrophic lake in Cerro Gordo County, IA. Water quality is graded F based on 2 sampling years through 2022. Compared to the 3 other monitored lakes in Cerro Gordo County, Fin And Feather Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-12. 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 2.3 ft of visibility. Chlorophyll-a: 42 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 42 µg/L | F |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 16 acres |
Location
County Ranking
Ranked #4 of 4 lakes in Cerro Gordo County
Cleaner Lakes Within 30 Miles
Fin And Feather Lake holds Grade F. 4 nearby lakes hold higher grades.
- ABlue Pit LakeCerro Gordo County · 2.9 mi · Two grade letters higher (F → A)
- BRudd LakeFloyd County · 15.1 mi · Two grade letters higher (F → B)
- DBlack Pit LakeCerro Gordo County · 3 mi · Higher grade (F → D)
- DClear LakeCerro Gordo County · 11.6 mi · Higher grade (F → D)
Nearby Lakes in Cerro Gordo County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Fin And Feather Lake is a man-made reservoir impounded by the Lake Fin-Feather Dam (completed 1972), built primarily for recreation on the TR-WINNEBAGO RIVER; earth-type dam, 25 ft tall and 1,200 ft long.
- Surface area
- 16 ac
- Normal storage
- 76 ac-ft
- Max storage
- 123 ac-ft
- Drainage area
- 0.22 sq mi
- Hazard class
- Low
- Owner
- Cerro Gordo County Conservation Board
Source: USACE National Inventory of Dams, NID ID IA00175 · Operator website · Matched by proximity (0.05 km)
EPA Impairment Status
Fin And Feather Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit IA 02-WIN-840 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-12
Monitoring stations: 1