Three Mile Wildlife Area Boat Ramp provides public access to Three Mile Lake, Iowa's largest recreational lake at 880 acres, with a hard surface ramp suitable for launching boats.

The ramp is one of multiple access points around the lake and supports both motorized boating (with restrictions on inboards and personal watercraft) and paddling activities.

Amenities at the lake include fishing jetties, accessible facilities, picnic areas, and a beach, making it a well-developed recreation destination in Union County.