Pine Lake
Waukesha County, Wisconsin711 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Pine Lake. Here is what has been measured.
- Oligotrophic
- 2 aquatic invasives
- 85 ft max depth
- Public access
Pine Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 25 ft visibility. Phosphorus: 12.2 µg/L. Maximum depth: 85 ft. Surface area: 711 acres.
Wisconsin DNR lists Largemouth Bass as common on Pine Lake. DNR survey details →
Pine Lake is a 711-acre cold, clear oligotrophic lake in Waukesha County, Wisconsin with a maximum depth of 85 feet. Water clarity is improving over recent sampling years. The lake supports 5 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 1 public boat landing. Compared to the 34 other monitored lakes in Waukesha County, Pine Lake ranks #26 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-09. Methodology: how these readings are compared.
Pine Lake covers about 710 acres in Waukesha County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Pine Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Pine Lake is good for
From access and monitoring records, not editorial picks.
- Clear water25 ft of visibility
- Boat launch1 documented ramp
- Fishing5 species recorded
- Deep water85 ft surveyed max depth
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 Pine 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 Pine Lake
These are the measurements Wisconsin DNR publishes for Pine Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 25 ft down. Phosphorus 12.2 µg/L. TSI 35.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 25ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 12.2µg/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. | 35 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Pine Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Largemouth Bass as common on Pine Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Pine Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2008. 3 stations on file (most recent sample 2026).
Fish Species (DNR-rated)
Lake Details
Max depth
85 ft
Surface area
711 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
62 sq mi
HydroLAKES / HydroSHEDS
Shoreline
6.4 mi
HydroLAKES / HydroSHEDS
Elevation
899 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Pine LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Pine Lake
Compare lakeside cabins, hotels, and vacation rentals near Pine Lake in Waukesha County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Pine Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Follow Pine Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Pine 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
Improving7 years
Phosphorus
Worsening+1.03 µg/L/yr6 years
Nearby Lakes in Waukesha County
Frequently asked questions about Pine Lake
Where is Pine Lake?
- Pine 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 Pine Lake?
- Pine Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 25 ft visibility. Phosphorus: 12.2 µg/L. Maximum depth: 85 ft. Surface area: 711 acres.
Is Pine Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Pine Lake?
- Pine Lake has a maximum depth of 85 feet. The lake covers 711 acres.
What fish are in Pine Lake?
- Fish species found in Pine Lake include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Pine Lake is located in Waukesha County, Wisconsin.
What did the DNR fisheries survey find at Pine Lake?
- Wisconsin DNR lists Largemouth Bass as common on Pine Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Pine Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Pine Lake?
- Pine Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Pine Lake. Public access is listed as yes.
Can I fish at Pine Lake?
- Pine 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 Pine Lake across LakeQuality
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Where this data comes from
28 measurements from 1 monitoring station, 2021–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX28 samples · 2021–2026
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