Angostura Dam

Angostura Dam is an embankment dam across the Cheyenne River with a concrete spillway section that holds back a large reservoir. The structure controls water flow and creates a body of water used for irrigation and recreation.

Construction took place between 1946 and 1949 following severe droughts that had harmed farming in earlier decades. The project was part of a broader water management effort for the region.

The name refers to a narrow river passage, a term with Spanish origins reflecting the local geography. People gather here for outdoor activities and fishing, making it an important recreational destination for the region.

Access is straightforward with trails and viewing areas around the water. Visitors should wear sturdy shoes and be prepared for changing weather conditions throughout the day.

The reservoir behind it extends far along the riverbed and hosts several fish species that attract anglers throughout the year. The extended shoreline creates multiple access points for boating and water sports.

Location: Fall River County

GPS coordinates: 43.34280,-103.43600

Latest update: December 14, 2025 12:27