Mamanasco Lake Boat Ramp in Ridgefield offers year-round trailered boat access via a paved ramp at the south end of the 89. 2-acre lake.

The facility includes 10 gravel parking spaces and a gravel access road, though amenities are limited (no docks or toilets available).

Note that internal combustion engines are prohibited on the lake, making it ideal for electric motors, paddling, and fishing with non-motorized or electric-powered boats.