Marshall Park offers a high-quality boat launch on Lake Mendota's western edge with five launch ramps, three piers (one year-round), and ample parking for vehicles with trailers.

A daily or annual lake access permit is required year-round for motorboats, sailboats, canoes, and kayaks.

The park also features a sandy beach, fishing access, canoe/kayak rentals through Marshall Boats, and a café, making it a well-equipped destination for both paddlers and boaters.