Army Lake
Walworth County, Wisconsin · WBIC 740200
Size
78 acres
Max depth
17 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
8.4 ft
Moderate, measured Sep 2025
A warm-water lake type: the DNR groups it with lakes that warm up through summer. This describes the lake type in general, not this lake in particular.
Outline
Drawn from the DNR's 24K hydrography (surveyed 1994), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
8.4 ft Secchi depthModerate
Last measured Sep 11, 2025. 6 readings on record, 2001 to 2025.
Typical summer clarity (June to September): 8.2 ft, moderate, from 5 readings (2021 to 2025).
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.
Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station Army Lake Deepest Spot. Checked Oct 23, 2026.
Water temperature
Last measured Sep 11, 2025, too long ago to show as the current temperature.
A typical year Modeled estimate
- Ice goes outabout Mar 31 (Mar 24 to Apr 11)
- Surface reaches 48°Fabout Apr 11 (Apr 3 to Apr 22)
- Surface reaches 64°Fabout May 9 (May 2 to May 13)
- June surface76°F, usually 75 to 77°F
- July surface82°F, usually 79 to 83°F
- August surface77°F, usually 75 to 80°F
Forms a warm top layer around May 18, lasting about 110 days.
A computer model of this lake's typical weather and water, built from 15 years, 2005 to 2019. Ranges show the middle half of years. The model was not calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Measured: Wisconsin DNR via the Water Quality Portal (checked Oct 23, 2026). Modeled: U.S. Geological Survey lake temperature data release (doi:10.5066/P9CA6XP8).
Today at the lake
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
Boat landings
- Army Lake Public AccessBoat ramp · Concrete surface · Accessible features · State(dnr)
Some landings are matched to this lake by name only, because the DNR list gives no location for them. They have no pin.
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Walworth County
- Lake Buelah1.1 miles away
- Potter Lake1.8 miles away
- Hilburn Pond1.9 miles away
- Swan Lake2.0 miles away
- Booth Lake2.5 miles away
- East Troy Pond (Trent)2.6 miles away
Where this comes from
- Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
- OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Boat landingsWisconsin DNR public boat access sites, checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Typical-year temperatureU.S. Geological Survey lake temperature model (modeled estimate), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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