Stillwater Boat Ramp is a two-lane ramp with courtesy dock located on the western end of Lake Granby, featuring a gin pole for raising sailboat masts, restrooms, and parking for vehicles with boat trailers.

All boats must pass Colorado Parks and Wildlife inspection for zebra and quagga mussels before launching. Day use fees are $5 per vehicle per day, with annual Arapaho National Recreation Area passes available.