The dam was built for irrigation purposes, but paved the way for recreation. Camping Four modern campgrounds provide 175 campsites. Each site has a picnic table, grill and gravel camping pad. Electricity is available on 111 of the sites. Hard-surfaced roads and six comfort stations complement the area.
Accessible campsites are available in all of the campgrounds.
Each accessible site includes a patio, grill, picnic table and sidewalk leading to a modern comfort station. Hours Angostura Recreation Area is open year-round. Gates are open 6 a.m. to 11 p.m. An entrance fee is required year-round. Angostura Reservoir Angostura is one of the few large reservoirs in western South Dakota.