The Big Eau Pleine Reservoir, located 20 miles southwest of Wausau in Marathon County, Wisconsin, offers paddlers a 6,800-acre body of water with 72 miles of shoreline. Created in 1937 for flood control, the reservoir has a maximum depth of 46 feet and a mean depth of 16 feet. The flowage provides a 17+ mile-long water trail with scenic woodland views, creating a backcountry feel despite nearby farmland.

Access points include Lisa's landing at Halder Bridge, Big Eau Pleine County Park, and George's Boat Landing off Highway C on the north end. The 1,450-acre county park, about a 2-hour paddle from the east end, offers camping opportunities. Paddlers should be aware that motorized boats are allowed on the reservoir.

Wildlife viewing is a highlight, with opportunities to spot eagles, ospreys, pelicans, cormorants, and seagulls. Koskey's Bay (also known as Strand's Bay) east of the county park has minimal boat traffic and is good for eagle sightings. The 40-square-mile George Mead Wildlife Area adjoins the flowage's southeast end, providing additional forest and marshland habitats.

Fall offers spectacular colors from maples, oaks, basswood, and birch trees. However, paddlers should be cautious of hunting seasons, particularly duck season. Summer thunderstorms can develop quickly, requiring vigilance and knowledge of safe harbor locations.

The reservoir has faced water quality challenges, with significant fish kills in 2009 and 2013 due to low winter water levels, agricultural runoff, and other factors. Efforts are ongoing to improve water quality. Despite these issues, the flowage traditionally supports northern pike, walleye, crappie, perch, smallmouth bass, and muskies.

While not heavily used for paddling, the Big Eau Pleine Reservoir offers a peaceful experience with ample opportunities for day trips and multi-day adventures. Paddlers should come prepared for potentially long distances between access points and variable weather conditions.