Marl Lake
Waushara County, Wisconsin · WBIC 105800
The DNR lists this lake's watershed (White River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
Size
41 acres
Max depth
34 ft
DNR lake type
Simple, Warm, clear water color
Water clarity
11 ft
Clear, measured Oct 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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
11 ft Secchi depthClear
Last measured Oct 11, 2026. 282 readings on record, 1989 to 2026.
Typical summer clarity (June to September): 12 ft, clear, from 60 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 MARL LAKE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
63.5°F surface, measured Oct 11, 2026
Measured near the surface (0.3 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Apr 10 (Apr 5 to Apr 17)
- Surface reaches 48°Fabout Apr 19 (Apr 14 to Apr 26)
- Surface reaches 64°Fabout May 12 (May 8 to May 24)
- June surface72°F, usually 72 to 74°F
- July surface79°F, usually 77 to 80°F
- August surface75°F, usually 73 to 77°F
Forms a warm top layer around Apr 21, 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
- Yellow Perchlast stocked 2024 (large 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
- 1Marl Lake County Park Boat RampBoat ramp · Paved surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Waushara County
- Lyman Lake1.2 miles away
- West Branch Mill P.(White River)1.7 miles away
- Turtle Lake2.5 miles away
- Bohn Lake2.7 miles away
- Lake Virginia4.0 miles away
- Fish Lake4.9 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
- Measured temperatureWisconsin 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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