Deer Lake
Iron County, Wisconsin · WBIC 1844100
Size
35 acres
Max depth
18 ft
DNR lake type
Simple, Cool, clear water color
Water clarity
7.5 ft
Moderate, measured Aug 2023
A cool-water lake type: the DNR groups it with lakes that stay cooler through summer. This describes the lake type in general, not this lake in particular.
Outline
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1981), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
7.5 ft Secchi depthModerate
Last measured Aug 21, 2023. 31 readings on record, 2009 to 2023.
Typical summer clarity (June to September): 6.1 ft, moderate, from 12 readings (2012 to 2023).
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 Deer Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 23 (Apr 15 to Apr 28)
- Surface reaches 48°Fabout Apr 29 (Apr 18 to May 6)
- Surface reaches 64°Fabout May 18 (May 13 to May 25)
- June surface70°F, usually 68 to 71°F
- July surface75°F, usually 74 to 77°F
- August surface71°F, usually 70 to 73°F
Forms a warm top layer around May 15, lasting about 109 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.
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
- 1Brandt Lake AccessCarry-in access · Gravel surface · County
Directions - 2Deer Lake AccessCarry-in access · Unimproved surface · County
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Iron County
- Brandt Lake0.4 miles away
- Voss Lake0.7 miles away
- One Man Lake1.2 miles away
- Wilson Lake1.2 miles away
- Grant Lake1.6 miles away
- North Grant Lake1.6 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
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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