Lake Bonaparte
Lewis County, WisconsinLimited DataOligotrophic
Lake Bonaparte is a 1,286-acre cold, clear oligotrophic lake in Lewis County, NY. Water quality is graded A based on 1 sampling years through 2020. Compared to the 2 other monitored lakes in Lewis County, Lake Bonaparte ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-21. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 15.8 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.8 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1.3K acres |
Location
County Ranking
Ranked #1 of 3 lakes in Lewis County
Nearby Lakes in Lewis County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Lake Bonaparte is a man-made reservoir impounded by the Alpina Dam (completed 1933), built primarily for other on the BONAPARTE CREEK; concrete-type dam, 7 ft tall and 120 ft long.
- Surface area
- 1,286 ac
- Normal storage
- 39,739 ac-ft
- Max storage
- 39,739 ac-ft
- Drainage area
- 18.4 sq mi
- Hazard class
- Low
- Owner
- NIAGARA MOHAWK POWER CORPORATION
Source: USACE National Inventory of Dams, NID ID NY00778 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-21
Monitoring stations: 1