Apple Lake
St Croix County, Wisconsin · WBIC 2499000
The DNR lists this lake's watershed (Balsam Branch-Apple River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
129 acres
Max depth
32 ft
DNR lake type
Complex, Warm, dark water color
Water clarity
1.8 ft
Low, measured Jul 2026
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
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1974), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
1.8 ft Secchi depthLow
Last measured Jul 15, 2026. 653 readings on record, 1988 to 2026.
Typical summer clarity (June to September): 2.5 ft, low, from 58 readings (2012 to 2026).
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 Apple Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
Last measured Jul 15, 2026, too long ago to show as the current temperature.
A typical year Modeled estimate
- Ice goes outabout Apr 11 (Apr 5 to Apr 22)
- Surface reaches 48°Fabout Apr 20 (Apr 14 to May 1)
- Surface reaches 64°Fabout May 10 (May 4 to May 13)
- June surface75°F, usually 74 to 76°F
- July surface80°F, usually 79 to 81°F
- August surface76°F, usually 75 to 78°F
Forms a warm top layer around Apr 26, lasting about 170 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.
Stocking history
- Walleyelast stocked 2024 (large fingerling); stocked in 6 years since 2010
- Largemouth Basslast stocked 2017 (large fingerling); stocked in 4 years since 2010
- Northern Pikelast stocked 2017 (large fingerling); stocked in 2 years since 2010
- Bluegilllast stocked 2014 (small fingerling); stocked in 1 year since 2010
Stocking shows what was added to the lake, not what is in it now.
Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.
Boat landings
- 1Squaw Lake Boat Ramp (listed under St. Croix County)Boat ramp · Paved surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in St Croix County
- Strand Lake2.7 miles away
- Turtle Lake2.8 miles away
- Riverdale Flowage2.9 miles away
- Cedar Lake3.2 miles away
- Hatfield Lake4.8 miles away
- New Richmond Flowage5.6 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
- Stocking historyWisconsin DNR annual fish stocking summary, 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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