Alpine Lake
Waushara County, Wisconsin50 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Alpine Lake. Here is what has been measured.
- Mesotrophic
- 2 aquatic invasives
- 18 ft max depth
- Public access
Alpine Lake in Waushara County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 22.7 µg/L. Maximum depth: 18 ft. Surface area: 50 acres.
Alpine Lake is a 50-acre mesotrophic lake in Waushara County, Wisconsin with a maximum depth of 18 feet. Water clarity is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 15 other monitored lakes in Waushara County, Alpine Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-23. Methodology: how these readings are compared.
What Alpine Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Alpine 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 Alpine Lake
These are the measurements Wisconsin DNR publishes for Alpine 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. Phosphorus 22.7 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 22.7µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Alpine Lake
Answers come straight from the public measurements and survey records on this page.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1986. 1 station on file (most recent sample 2025).
Lake Details
Max depth
18 ft
Surface area
50 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
11 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.8 mi
HydroLAKES / HydroSHEDS
Elevation
853 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lake Alpine County ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Alpine Lake
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Top-rated places to stay near Alpine Lake
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Fishing Alpine 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.
Water Quality Trend: Stable
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving6 years
Phosphorus
Worsening+0.64 µg/L/yr7 years
Reservoir Info (USACE NID)
Alpine Lake is a man-made reservoir impounded by the Alpine Lake (completed 1970), built primarily for recreation on the BRUCE (THORSTAD) CREEK; earth-type dam, 25 ft tall and 600 ft long.
- Surface area
- 80 ac
- Normal storage
- 450 ac-ft
- Max storage
- 950 ac-ft
- Drainage area
- 3.5 sq mi
- Hazard class
- Low
- Owner
- Waushara County
Source: USACE National Inventory of Dams, NID ID WI00059 · Operator website
Nearby Lakes in Waushara County
Frequently asked questions about Alpine Lake
Where is Alpine Lake?
- Alpine Lake is a lake in Waushara County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Alpine Lake?
- Alpine Lake in Waushara County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 22.7 µg/L. Maximum depth: 18 ft. Surface area: 50 acres.
Is Alpine Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Alpine Lake?
- Alpine Lake has a maximum depth of 18 feet. The lake covers 50 acres.
Are there boat ramps on Alpine Lake?
- Alpine Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Alpine County Park. Public access is listed as yes.
Can I fish at Alpine Lake?
- Alpine Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Alpine Lake across LakeQuality
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Where this data comes from
25 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX25 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
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
Named boat-access points from the USGS National Boat Ramps inventory