
Lake Geneva
Fed by the White River, Lake Geneva holds roughly 5,189 acres of water in Wisconsin. It lies in Walworth County. WI DNR / local…
State
Wisconsin has 35 lakes and reservoirs in this guide. 11 of them are reservoirs held back by a dam and 24 are natural lakes. Lake Winnebago is the biggest, covering roughly 137,638 acres. The deepest water on record here is at Green Lake, about 237 feet. Rivers that feed or drain them include the Oconomowoc River, the Yahara River and the catchment =. A public agency publishes a live water level for 14 of them, which is what the level pages show. The agency behind the most lakes here is Wisconsin DNR. Across the state we map 16 named swimming spots and access points from federal and state sources.
Click a marker to open the lake page.
Each page has the live water level, weather, access points and sources.

Fed by the White River, Lake Geneva holds roughly 5,189 acres of water in Wisconsin. It lies in Walworth County. WI DNR / local…

Fed by the Yahara River, Lake Monona holds roughly 3,212 acres of water in Wisconsin. The lake is in Dane County. WI DNR / Dane…

Lake Winnebago covers about 137,638 acres of the Fox River in Wisconsin. It lies in Winnebago County. Management is in the hands…

At roughly 1,906 acres, Delavan Lake is one of the lakes covered in Wisconsin. Its shoreline falls inside Walworth County. WI DNR…

Lake Mendota covers about 9,736 acres of the Yahara River in Wisconsin. Its shoreline falls inside Dane County. WI DNR / Dane…

Pewaukee Lake is a reservoir of some 2,437 acres on the Pewaukee River, in Wisconsin. You will find it in Waukesha County. It is…
Lake Koshkonong covers about 10,460 acres of the Rock River in Wisconsin. The lake is in Jefferson County. Rock-Koshkonong Lake…

Okauchee Lake is a reservoir of some 1,210 acres on the Oconomowoc River, in Wisconsin. It lies in Waukesha County. It is managed…

Devils Lake is a lake of some 374 acres on the outflow =, in Michigan. Its shoreline falls inside Sauk County. Michigan DNR…

Fed by the Oconomowoc River, Lac La Belle holds roughly 1,154 acres of water in Wisconsin. You will find it in Waukesha County.…

Nagawicka Lake covers about 981 acres in Wisconsin. The lake is in Waukesha County. Management is in the hands of Waukesha County…

Lake Poygan is a lake of some 14,024 acres on the Wolf River, in Wisconsin. It lies in Winnebago County. It is managed by…
Readings are refreshed from the operating agency and stamped with the time they were taken. Level changes what is usable on the shoreline, from beach width to ramp access.
| Lake | Level | Full pool | How full |
|---|---|---|---|
| Lake Geneva | 864.37 ft | — | no percent published |
| Lake Monona | 845.00 ft | — | no percent published |
| Lake Winnebago | 747.22 ft | — | no percent published |
| Delavan Lake | — | — | no percent published |
| Lake Mendota | 849.89 ft | — | no percent published |
| Pewaukee Lake | — | — | no percent published |
| Lake Koshkonong | 776.57 ft | — | no percent published |
| Okauchee Lake | — | — | no percent published |
| Devil's Lake | — | — | no percent published |
| Lac La Belle | — | — | no percent published |
| Nagawicka Lake | — | — | no percent published |
| Lake Poygan | — | — | no percent published |
Lakes and swimming spots near the main towns.
Milwaukee Madison Kenosha Racine Waukesha Janesville West Allis Wauwatosa