US lakes & pondsUS lakes & pondsLinn · Walworth · Fontana-on-Geneva Lake, Wisconsin — Walworth County.
Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 121623871).
The red circle marks Lake Geneva.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline.
Official Wisconsin DNR pages. Rules and fees change; check before you go.
Built only from the data on this page: official access lists, OpenStreetMap beaches and trails, campground listings, state and USGS invasive-species records. We don't rate crowds or water quality.
Fish species listed by the Wisconsin DNR (with DNR abundance rating): Smallmouth Bass (abundant), Panfish (present), Largemouth Bass (present), Northern Pike (present), Trout (present), Walleye (present).
Average depth not published.
DNR lake class: Complex - Two Story
Source: Wisconsin Department of Natural Resources Lake Page for Lake Geneva (WBIC 758300); maximum depth and acreage from the DNR lake classification data. Acreage here can differ slightly from our mapped outline.
Numbers on the map match the list at rightbelow.
Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 121623871), public domain. State outline: U.S. Census Bureau TIGERweb. Points: Wisconsin DNR boat access sites and OpenStreetMap boat ramps (ODbL). Dashed trails: © OpenStreetMap contributors (ODbL). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.
OpenStreetMap shows about 22.8 mi of public hiking and walking trail within about 100 m (330 ft) of the Lake Geneva shoreline. Together the trails go all or nearly all the way around Lake Geneva, staying close to the water.
The dashed brown line on the lake map shows these trails. We include paths, footways and marked trails that OpenStreetMap doesn't mark as private, and leave out roads, sidewalks and snowmobile corridors. Mapped trails can still cross private land or close for the season, and not every trail is mapped, so follow posted signs.
Trails: © OpenStreetMap contributors, available under the Open Database License (ODbL). Map data as of Oct 9, 2026. Trail lengths count only the parts within about 100 m of the USGS NHD lake outline.
We found 11 campgrounds and RV parks within 15 miles of Lake Geneva, 3 of them within 5 miles. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.
All campgrounds & RV parks in Wisconsin
Green tent icons on the lake map mark campgrounds near the shore, and the interactive map shows the closest 12. Amenities are listed only where a source records them; call or check the campground's website before you go, since seasons and rates change every year.
Campground data: OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.
Live from the National Weather Service API for the lake's coordinates (42.5684, -88.4809). The nearest station may be several miles away. NWS forecast for Lake Geneva. No live water-temperature sensor is shown because we haven't found a public one for this lake.
Based on solunar theory, an estimate. Major periods (about 2 hours) center on when the moon is directly overhead or underfoot; minor periods (about 1 hour) center on moonrise and moonset. The 0–100 activity score rises during those periods and gets a boost near sunrise and sunset and around the new and full moon. Weather, water temperature and pressure often matter more. Sun and moon times are calculated in your browser from the lake's coordinates with standard astronomy formulas, shown in CT (America/Chicago), and accurate to within a few minutes.
11 public access sites listed, 11 with a boat ramp or trailer launch.
| Site | Town | Owner | Type | Parking | Fee | Uses | Map |
|---|---|---|---|---|---|---|---|
| Boat ramp | Fontana-on-Geneva Lake | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 42.5484, -88.5747 |
| Boat ramp | Fontana-on-Geneva Lake | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 42.5477, -88.5508 |
| Boat ramp | Linn | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 42.5628, -88.4718 |
| Boat ramp | Linn | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 42.5763, -88.4647 |
| Boat ramp | Linn | — | Boat ramp (OpenStreetMap) · Yes ramp | — | — | Boating | 42.5758, -88.4661 |
| Geneva Lake - Linn Road | Linn | UNKNOWN | Boat ramp · Concrete Plank ramp | — | — | Boating | 42.5638, -88.4825 |
| Lake Geneva - Hillside Road | Linn | Town of Linn | Boat ramp · Concrete Plank ramp | — | — | Boating Handicap accessible | 42.5581, -88.4624 |
| Lake Geneva Access | Linn | Village of Fontana | Boat ramp · Concrete ramp | — | — | Boating Handicap accessible | 42.5506, -88.5726 |
| Lake Geneva Access | Linn | Town of Linn | Boat ramp · Paved ramp | — | — | Boating | 42.5737, -88.4921 |
| Lake Geneva Boat Launch | Linn | City of Lake Geneva | Boat ramp · Concrete ramp | — | — | Boating | 42.5887, -88.4338 |
| Williams Bay Boat Ramp | Linn | Village of Williams Bay | Boat ramp · Concrete ramp | — | — | Boating | 42.5785, -88.5359 |
Wisconsin DNR boat access sites and OpenStreetMap boat ramps (ODbL)
Fees, hours and rules change; confirm with the site owner before you go.
On OpenStreetMap: 2 beaches and swimming spots on the shore of Lake Geneva not marked private, residents-only or members-only.
| Beach | Type | Access | Directions |
|---|---|---|---|
| Riviera Beach | Beach | Access not tagged; check posted rules; fee 7 USD; lifeguards (seasonal) | Get directions |
| Swimming beach | Beach | Access not tagged; check posted rules | Get directions |
Beaches: © OpenStreetMap contributors (ODbL), within about 150 m (500 ft) of the lake outline. A mapped beach is not a guarantee that swimming is allowed, supervised or safe; some town beaches need a resident sticker even when the map doesn't say so. Check posted rules and water-quality advisories before you swim.
Reported on or near Lake Geneva
USGS Nonindigenous Aquatic Species database
USGS records matched to this water by location (within about 150 m of the outline) or by the place name in the record. A record shows a sighting was reported; it doesn't prove the species is still there. As of Oct 10, 2026.
Lake Geneva covers about 5,417 acres in Linn, Walworth and Fontana-on-Geneva Lake, Wisconsin (Walworth County).
The maximum recorded depth is 135 feet, according to the Wisconsin DNR Lake Pages.
Wisconsin DNR Lake Pages lists Walleye, Northern Pike, Largemouth Bass, Smallmouth Bass, Panfish and Trout.
Yes. 11 public trailer launches are listed: Williams Bay Boat Ramp, Lake Geneva Boat Launch and Lake Geneva Access. Check posted fees and parking rules.
OpenStreetMap shows 2 public beach or swimming spots on the shore. None of our sources lists a lifeguard, so swim at your own risk and follow posted rules.
Yes. We list 11 campgrounds and RV parks within 15 miles, 3 of them within 5 miles.
Lake Geneva touches Linn, Walworth and Fontana-on-Geneva Lake in Walworth County, Wisconsin.
Know Lake Geneva? Tell us about the launch, parking, where they're biting or anything a first-time visitor should know. Tips go privately to the LakeRipple editor; nothing is posted automatically. Helpful tips may be featured on this page (we'll use your first name only if you give one).
Straight-line distance between lake centers. All Wisconsin lakes & ponds · All waters in Linn