Geneva Lake
Walworth County, Wisconsin · WBIC 758300
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
5,262 acres
Max depth
135 ft
DNR lake type
Complex, Two Story
Water clarity
32.6 ft
Clear, measured Sep 2026
A deep lake type that can hold a cold layer below the warm surface in 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
32.6 ft Secchi depthClear
Last measured Sep 28, 2026. 238 readings on record, 1986 to 2026.
Typical summer clarity (June to September): 22.1 ft, clear, from 18 readings (2021 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 Geneva Lake - Deep Hole-Site A. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Mar 30 (Mar 23 to Apr 6)
- Surface reaches 48°Fabout May 7 (Apr 25 to May 9)
- Surface reaches 64°Fabout May 27 (May 22 to May 31)
- June surface75°F, usually 74 to 77°F
- July surface82°F, usually 80 to 83°F
- August surface80°F, usually 77 to 81°F
Forms a warm top layer around May 7, lasting about 187 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.
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
- Lake Troutlast stocked 2025 (large fingerling); stocked in 15 years since 2010
- Walleyelast stocked 2025 (fry, large fingerling and small fingerling); stocked in 11 years since 2010
- Brown Troutlast stocked 2024 (adult (broodstock) and large fingerling); stocked in 15 years since 2010
- Muskellungelast stocked 2024 (large fingerling and yearling); stocked in 10 years since 2010
- Rainbow Troutlast stocked 2020 (yearling); 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
- Banded Killifish Fundulus diaphanus2004; 3 records
- Black Bullhead Ameiurus melas1995 to 2006; 3 records
- Black Crappie Pomoxis nigromaculatus1952 to 2006; 10 records
- Bluegill Lepomis macrochirus1949 to 2024; 17 records
- Bluntnose Minnow Pimephales notatus1948 to 2004; 2 records
- Bowfin Amia calva1968 to 1995; 3 records
- Brown Bullhead Ameiurus nebulosus2002 to 2006; 2 records
- Brown Trout Salmo trutta1935 to 2006; 13 records
- Cisco Coregonus artedi1860 to 1995; 5 records
- Common Carp Cyprinus carpio1995; 1 record
- Creek Chub Semotilus atromaculatus2004; 1 record
- Fathead Minnow Pimephales promelas2004; 1 record
- Golden Shiner Notemigonus crysoleucas2004; 2 records
- Green Sunfish Lepomis cyanellus2002; 1 record
- Iowa Darter Etheostoma exile2004; 1 record
- Lake Trout Salvelinus namaycush2000 to 2006; 3 records
- Largemouth Bass Micropterus salmoides1952 to 2006; 21 records
- Longnose Gar Lepisosteus osseus1995 to 2025; 2 records
- Mimic Shiner Notropis volucellus1941 to 2004; 4 records
- Muskellunge Esox masquinongy2025; 2 records
- Northern Pike Esox lucius1952 to 2006; 17 records
- Pumpkinseed Lepomis gibbosus1983 to 2006; 11 records
- Redfin Pickerel Esox americanus1970; 1 record
- Redfin Shiner Lythrurus umbratilis1 record
- River Chub Nocomis micropogon1 record
- Rock Bass Ambloplites rupestris1948 to 2006; 17 records
- Smallmouth Bass Micropterus dolomieu1968 to 2006; 20 records
- Spottail Shiner Notropis hudsonius1948; 1 record
- Walleye Sander vitreus1952 to 2006; 35 records
- White Bass Morone chrysops1948 to 1952; 3 records
- White Sucker Catostomus commersonii1952 to 2006; 6 records
- Yellow Bullhead Ameiurus natalis1952 to 1995; 2 records
- Yellow Perch Perca flavescens1948 to 2006; 15 records
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
- 1Geneva Lake - Linn RoadBoat ramp · Concrete Plank surface · Unknown
Directions - 2Lake Geneva - Hillside RoadBoat ramp · Concrete Plank surface · Accessible features · Township
Directions - 3Lake Geneva Boat LaunchBoat ramp · Concrete surface · City
Directions - 4Lake Geneva AccessBoat ramp · Concrete surface · Accessible features · Village
Directions - 5Williams Bay Boat RampBoat ramp · Concrete surface · Village
Directions - 6Lake Geneva AccessBoat ramp · Paved surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
Fishing from shore
- CEYLON POND FISHING PIERDirections · DNR details
Wisconsin DNR shore fishing sites. Checked Oct 24, 2026.
Water level and flow
- GENEVA LAKE AT LAKE GENEVA, WIGage height, Lake or reservoir elevation (NAVD 1988)
- BIRCHES CREEK AT LACKEY LANE NEAR LAKE GENEVA, WIDischarge
- WHITE RIVER AT CENTER STREET AT LAKE GENEVA, WIGage height, Discharge
- SOUTHWICK CREEK AT WILLIAMS BAY, WIDischarge
U.S. Geological Survey gauges at or beside this lake. Readings are provisional and fetched when you open the page.
More lakes in Walworth County
- Como Lake2.3 miles away
- Delavan Lake6.0 miles away
- Pell Lake7.6 miles away
- Lake Ivanhoe7.9 miles away
- Comus Lake8.8 miles away
- Tombeau 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
- 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
- Water level and flowU.S. Geological Survey gauges (readings are live), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Shore fishing sitesWisconsin DNR shore fishing sites, 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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