McCormack Campground Boat Ramp is an improved paved ramp providing access to Lake Owyhee Reservoir, one of three boat ramps on the lake.

The ramp is located at McCormack Campground, which offers 29 electrical sites with water, 9 tent sites, hot showers, flush toilets, and an RV dump station, making it a well-equipped base for fishing and water sports enthusiasts.

Note that access involves a narrow, winding single-lane road with steep sections, and there is no cell phone service in the area.