Where is Eagle Spring Lake?

Eagle Spring 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 temperature of Eagle Spring Lake?

Eagle Spring Lake typically sits around 75°F at the surface in August, from 16 EPA Water Quality Portal field readings (2025–2026). That is a typical value for the month, not a live reading.

How deep is Eagle Spring Lake?

Eagle Spring Lake has a maximum depth of 8 feet. The lake covers 279 acres.

What fish are in Eagle Spring Lake?

Fish species found in Eagle Spring Lake include Panfish, Largemouth Bass, Northern Pike. Eagle Spring Lake is located in Waukesha County, Wisconsin.

Does Eagle Spring Lake have blue-green algae?

There is no recent EPA CyAN cyanobacteria estimate for Eagle Spring Lake (clouds, ice, or an off-season gap). The most recent reading was low (19,588 cells/mL). Blue-green algae can appear and clear within days, so check Wisconsin's current advisory before swimming.

Are there boat ramps on Eagle Spring Lake?

Eagle Spring Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Eagle Spring Lake. Public access is listed as yes.

Can I fish at Eagle Spring Lake?

Eagle Spring 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.

Eagle Spring Lake

Waukesha County, Wisconsin279 acresView map Directions

Wisconsin DNR publishes the water-quality measurements for Eagle Spring Lake. Here is what has been measured.

Clarity

4.5 ft

Murkier than most

Secchi · sampled 2026

Phosphorus

17.9 µg/L

Typical for Wisconsin

Measured by Wisconsin DNR

Water temp

~75°F

Typical for Aug · EPA WQP

Max depth

8 ft

Bathymetric survey

Area

279 acres

Surface area

Type

Eutrophic

Trophic class

Eutrophic
3 aquatic invasives
8 ft max depth
Public access

See the measurements Directions Where to stay

Eagle Spring Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 17.9 µg/L. Maximum depth: 8 ft. Surface area: 279 acres.

Wisconsin DNR lists Panfish as common on Eagle Spring Lake. DNR survey details →

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Eagle Spring Lake is a 279-acre productive, nutrient-rich eutrophic lake in Waukesha County, Wisconsin with a maximum depth of 8 feet. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 34 other monitored lakes in Waukesha County, Eagle Spring Lake ranks #18 for water quality.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-29. Methodology: how these readings are compared.

Eagle Spring Lake covers about 280 acres in Waukesha County. It has one public boat landing. Vrbo is where to look for cabins and lake homes around Eagle Spring Lake, and Booking.com and Expedia search hotels near the lake for your dates.

What Eagle Spring Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Fishing3 species recorded

Swimming conditions

Readings only

Low 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 Eagle Spring 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.

Compare swimming lakes near Milwaukee →

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Water quality measurements for Eagle Spring Lake

These are the measurements Wisconsin DNR publishes for Eagle Spring Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Murky, only visible to about 4.5 ft. Phosphorus 17.9 µg/L. TSI 51.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	4.5ft	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	17.9µg/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.	51	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Eagle Spring Lake

Answers come straight from the public measurements and survey records on this page.

Water Temperature

Eagle Spring Lake typically sits around 75°F at the surface in August. Summer average is about 80°F. Usually warmest in Jul (about 83°F) and coldest in May (about 66°F). These are typical values by month — not a live reading.

Jan

Feb

Mar

Apr

66°

May

82°

Jun

83°

Jul

75°

Aug

Sep

Oct

Nov

Dec

Column height runs from this lake’s coldest month (66°F) to its warmest (83°F).

Typical surface water temperature by month, from 16 field readings (2025–2026) via the EPA Water Quality Portal. See the full Eagle Spring Lake water temperature breakdown →

Blue-Green Algae (Cyanobacteria)

No current satellite reading

There’s no recent EPA CyAN cyanobacteria estimate for Eagle Spring Lake — clouds, ice, or an off-season gap in coverage. The most recent reading was low (19,588 cells/mL) on March 1, 2025.

Blue-green algae can appear and clear within days, so check your state’s current advisory before swimming. EPA CyAN ↗

DNR fisheries survey

Wisconsin DNR lists Panfish as common on Eagle Spring Lake.

A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Eagle Spring Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. 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 1991. 3 stations on file (most recent sample 2025).

DNR Assessment

Excellent · Reservoir lake

Trophic State Index 49 (mesotrophic) · 5-year average

Fish Species (DNR-rated)

Panfish(Common)Largemouth Bass(Present)Northern Pike(Present)

Contour map (PDF) →Full WI DNR LakePage →Water quality stations →

Lake Details

Max depth

8 ft

Surface area

279 acres

Public access

Yes

Listed by Wisconsin DNR

Lake Size & Watershed

Watershed (drainage) area

26 sq mi

HydroLAKES / HydroSHEDS

Shoreline

3.3 mi

HydroLAKES / HydroSHEDS

Elevation

817 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).

Recreation & Access

Boat Landings

Yes

Public Access

Eagle Spring 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 Eagle Spring Lake

Compare lakeside cabins, hotels, and vacation rentals near Eagle Spring 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 Eagle Spring 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 Eagle Spring Lake’s readings

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Fish Species

Panfish Largemouth Bass Northern Pike

Click a species to see every lake where it is documented.

Fishing Eagle Spring 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.

Chinese Mystery SnailCurly-Leaf PondweedEurasian Water-MilfoilHybrid Eurasian / Northern Water-MilfoilPurple LoosestrifeZebra MusselStarry Stonewort

Water Quality Trend: Improving

Based on 6 years of monitoring (2020–2026).

Water clarity
Improving
6 years
Phosphorus
Improving
-0.75 µg/L/yr6 years

See year-by-year chart →

Reservoir Info (USACE NID)

Eagle Spring Lake is a man-made reservoir impounded by the Wambold (completed 1836), built primarily for recreation on the MUKWONAGO R; gravity-type dam, 12 ft tall and 301 ft long.

Surface area: 311 ac
Normal storage: 1,127 ac-ft
Max storage: 1,540 ac-ft
Drainage area: 22 sq mi
Hazard class: Significant
Owner: Eagle Spring Lake Management District;Wruck, Steven

Source: USACE National Inventory of Dams, NID ID WI00331 · Operator website

Nearby Lakes in Waukesha County

Rainbow Springs Lake—View →Phantom Lake—View →Spring LakeMesotrophic—View →Ottawa Lake13 ft clear · Mesotrophic—View →Lower Phantom Lake6.7 ft clear · Mesotrophic—View →Pretty Lake12.2 ft clear · Mesotrophic—View →

Frequently asked questions about Eagle Spring Lake

Where is Eagle Spring Lake?: Eagle Spring 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 Eagle Spring Lake?: Eagle Spring Lake in Waukesha County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 17.9 µg/L. Maximum depth: 8 ft. Surface area: 279 acres.
Is Eagle Spring Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Eagle Spring Lake?: Eagle Spring Lake typically sits around 75°F at the surface in August, from 16 EPA Water Quality Portal field readings (2025–2026). That is a typical value for the month, not a live reading.
How deep is Eagle Spring Lake?: Eagle Spring Lake has a maximum depth of 8 feet. The lake covers 279 acres.
What fish are in Eagle Spring Lake?: Fish species found in Eagle Spring Lake include Panfish, Largemouth Bass, Northern Pike. Eagle Spring Lake is located in Waukesha County, Wisconsin.
What did the DNR fisheries survey find at Eagle Spring Lake?: Wisconsin DNR lists Panfish as common on Eagle Spring Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Eagle Spring Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Does Eagle Spring Lake have blue-green algae?: There is no recent EPA CyAN cyanobacteria estimate for Eagle Spring Lake (clouds, ice, or an off-season gap). The most recent reading was low (19,588 cells/mL). Blue-green algae can appear and clear within days, so check Wisconsin's current advisory before swimming.
Are there boat ramps on Eagle Spring Lake?: Eagle Spring Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Eagle Spring Lake. Public access is listed as yes.
Can I fish at Eagle Spring Lake?: Eagle Spring 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 Eagle Spring Lake across LakeQuality

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State Parks Near Eagle Spring Lake

Big Foot Beach State Park

State Park · 19.6 mi

Other Lakes in Wisconsin

Booth Lake

Walworth County · 8 ft

Army Lake

Walworth County · 8.2 ft

Potter Lake

Walworth County · 4.3 ft

Pleasant Lake

Walworth County · 12 ft

Green Lake

Walworth County · 11 ft

Middle Lake

Walworth County · 10 ft

Eutrophic Lakes in Wisconsin

Swift Lake Potter Lake Lower Spring Lake Blue Spring Lake

Where this data comes from

46 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 ResourcesWIDNR_WQX46 samples · 2020–2026

Analytical methods

Phosphorus by Colorimetry

Monitoring station identifiers (1)

WIDNR_WQX-683258

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