The 42nd Street Boat Ramp (located on Dandy Trail south of the 56th Street Gatehouse) is the primary launch point for trailered boats on Eagle Creek Reservoir, with a 10 HP motor limit and 26-foot boat length restriction.

A single-day boat launch pass costs $3 plus park admission, or annual passes are available for $40.

The ramp provides access to over 1,300 acres of reservoir surrounded by 3,900 acres of woods and meadows, with nearby amenities including Eagle Creek Outfitters for equipment rentals and Rick's Boatyard restaurant.