Beaver Lake
Waukesha County, Wisconsin313 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
- 2 aquatic invasives
- 46 ft max depth
- Public access
- Limited data
Ask about Beaver Lake
Answers come straight from the public measurements and survey records on this page.
Beaver Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 46 ft. Surface area: 313 acres.
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Beaver Lake is a 313-acre lake in Waukesha County, Wisconsin with a maximum depth of 46 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-04-14. Grade methodology: LakeQuality methodology.
What Beaver Lake is good for
From access and monitoring records, not editorial picks.
- Fishing3 species recorded
- Deep water46 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Beaver Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Beaver Lake
These are the measurements Wisconsin DNR publishes for Beaver Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 46 ft |
| Surface Area | 313 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every lake where it is documented.
Fishing Beaver Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Nearby Lakes in Waukesha County
Frequently asked questions about Beaver Lake
Where is Beaver Lake?
- Beaver Lake is a lake in Waukesha County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Beaver Lake?
- Beaver Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 46 ft. Surface area: 313 acres.
Is Beaver Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Beaver Lake?
- Beaver Lake has a maximum depth of 46 feet. The lake covers 313 acres.
What fish are in Beaver Lake?
- Fish species found in Beaver Lake include Panfish, Largemouth Bass, Northern Pike. Beaver Lake is located in Waukesha County, Wisconsin.
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Where this data comes from
6 measurements from 1 monitoring station, 2024–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX6 samples · 2024–2026
Analytical methods
- Total Phosphorus After Block Digestion
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes