Lake Onalaska, created in 1937, is a shallow lake connected to the Mississippi River in Wisconsin. The lake offers diverse paddling opportunities, from calm backwaters to more open areas. Several access points are available, including the Onalaska Waterfront and Brown's Marsh Canoe Area (Lytle's Landing). Paddlers should be aware of potential strong currents, especially during high water events.

The lake is known for its abundant wildlife, including eagles, ducks, and various fish species. Paddlers can enjoy views of majestic bluffs along the river and explore the lake's backwaters. The area is particularly noted for its fishing opportunities, with bluegill, perch, and crappie among the common catches.

A Voluntary Waterfowl Avoidance Area is in effect from October 15 through mid-November when large numbers of diving ducks are present. Buoys mark the boundaries during this period. The lake is designated as an Electric Motor Only Area, closed year-round to all motorized watercraft except those powered by electric motors.

Paddlers can access several marked trails, including the Lake Onalaska Canoe Trail. This trail follows Mississippi River backwaters out into Lake Onalaska. The Brown's Marsh Canoe Area, while not a marked trail, offers easy paddling through backwaters and is closed to motorized watercraft.

Rental options are available from local outfitters like Schafer's River Rentals, which offers kayaks and canoes. The City of Onalaska also provides canoe and kayak rentals at the waterfront. For those seeking guidance, KayoeSUP offers paddleboard instruction and guided tours in the area.