Norwalk Memorial Reservoir (Reservoir 3) is the largest of the three city reservoirs and has the most species reported via eBird. Parking is available at the entrance off Old State Road between Reservoir 1 and Reservoir 3.

Norwalk Reservoirs 1, 2, and 3 are in Huron County. The reservoirs total 159 acres with 5 miles of shoreline. The Norwalk Reservoirs are located just southeast of the city of Norwalk at the corners of OH-18 (Medina Road) and Old State Road, and two miles east of US-250.