Otter Lake
Oneida County, WisconsinLimited DataEutrophic
Otter Lake is a 135-acre productive, nutrient-rich eutrophic lake in Oneida County, NY. Water quality is graded D based on 1 sampling years through 2020.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-27. 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 6.6 ft. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.6 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 135 acres |
Location
County Ranking
Ranked #1 of 1 lakes in Oneida County
Nearby Lakes in Oneida County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Otter Lake is a man-made reservoir impounded by the Otter Lake Dam (completed 1880), built primarily for recreation on the OTTER LAKE OUTLET; earth-type dam, 8 ft tall and 127 ft long.
- Surface area
- 135 ac
- Normal storage
- 269 ac-ft
- Max storage
- 358 ac-ft
- Hazard class
- Low
- Owner
- NYS DEC
Source: USACE National Inventory of Dams, NID ID NY00804 · Operator website
EPA Impairment Status
Otter Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NY0801-0407 · Official waterbody report · Matched by proximity (2.06 km)
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: 2020-09-27
Monitoring stations: 1