Highline Lake State Park Access provides two boat ramps—the West Boat Ramp (accessible via the West Entrance) and an East Boat Ramp—serving the 738-acre park near Mack Wash.

The West Entrance features an Aquatic Nuisance Species (ANS) inspection station where all motorboats and sailboats must be inspected before launching, and a free Life Jacket Loaner Program is available at both the Visitor Center and West Entrance.

Boating season runs March 1 through September 30, with Wednesdays designated as wakeless days on Highline Lake (excluding July 4th), while Mack Mesa Lake is restricted to hand-powered or electric-motor vessels only.