Lake DuBay is a 4,649-acre impoundment of the Wisconsin River located in central Wisconsin. The lake offers paddlers a mix of open water and island-dotted backwaters to explore. Popular access points include the boat launch at the Lake DuBay dam and the beach at Tiki Beach Bar & Grill. Paddlers should be aware of motorboat traffic, especially on weekends. The lake is known for its abundance of wildlife, including bald eagles, great blue herons, and turtles.

The flowage section in the southern part of the lake is particularly appealing for paddlers seeking a more secluded experience. This area features a labyrinth of islands and backwaters spanning approximately 1.5 square miles, providing opportunities to explore narrow channels and get away from the main lake. The shoreline is a mix of undeveloped areas and residential properties.

Lake DuBay is part of the "hardest working" section of the Wisconsin River, with multiple dams in the vicinity. Paddlers should exercise caution near dam structures and be aware of potential strong currents. The lake is generally calm, but wind can create choppy conditions on the more open northern section.

Facilities for paddlers include multiple boat launches and beaches. Tiki Beach Bar & Grill offers kayak and stand-up paddleboard rentals during the summer months, as well as food and drinks accessible from the water. The Central Wisconsin Water Ski Show Team performs on the lake most Thursdays from June to August, providing entertainment for paddlers.

The lake is suitable for paddling from late spring through early fall. Ice cover during winter months prevents paddling. Water quality is generally good.