Clear Lake
Rock County, Wisconsin · WBIC 775000
Size
82 acres
Max depth
20 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
3.4 ft
Low, measured Sep 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 1976), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
3.4 ft Secchi depthLow
Last measured Sep 11, 2026. 163 readings on record, 1990 to 2026.
Typical summer clarity (June to September): 3 ft, low, from 43 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 CLEAR LAKE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
76.1°F surface, measured Sep 11, 2026
Measured near the surface (0 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Mar 28 (Mar 17 to Apr 5)
- Surface reaches 48°Fabout Apr 11 (Apr 2 to Apr 21)
- Surface reaches 64°Fabout May 9 (Apr 24 to May 14)
- June surface76°F, usually 76 to 78°F
- July surface83°F, usually 80 to 84°F
- August surface79°F, usually 76 to 81°F
Forms a warm top layer around May 25, lasting about 59 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 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
- Northern Pikelast stocked 2023 (large fingerling and small fingerling); stocked in 12 years since 2010
- Channel Catfishlast stocked 2010 (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.
Fish recorded near this lake
- Bluegill Lepomis macrochirus1989; 1 record
- Brown Bullhead Ameiurus nebulosus1989; 1 record
- Common Carp Cyprinus carpio1989; 1 record
- Green Sunfish Lepomis cyanellus1989; 1 record
- Largemouth Bass Micropterus salmoides1989; 1 record
- Northern Pike Esox lucius1989; 1 record
- Pumpkinseed Lepomis gibbosus1989; 1 record
- Redfin Pickerel Esox americanus1989; 1 record
- Warmouth Lepomis gulosus1989; 1 record
- Yellow Bullhead Ameiurus natalis1989; 1 record
Recorded in open fish survey and museum records (GBIF). A record shows a fish was found near this lake in that year, not that it is there now, and says nothing about how many. Most coordinates are rounded to about 1 km, so a record is attached only when one lake is the clear match.
Open fish survey and museum records from GBIF; datasets are listed on the sources page. Checked Oct 23, 2026.
Boat landings
- 1Clear Lake Public AccessBoat ramp · Concrete Panels surface · State(dnr)
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Rock County
- Bowers Lake3.3 miles away
- Storrs Lake3.6 miles away
- Willies Pond4.7 miles away
- Lake Koshkonong5.0 miles away
- Spauldings Pond5.1 miles away
- Gibbs Lake10 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
- Fish recordedOpen fish survey and museum records, via GBIF, 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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