Cheyenne River above Angostura at Hwy 71

1. 3211.0 ftMajor flood stage. Significant flooding along the Cheyenne River upstream from Angostura Reservoir. Water will backup along the Highway 71 road embankment, although no impacts to Highway 71 are expected. Major flooding of agricultural land.
2. 3209.0 ftModerate flood stage. Widespread flooding of agricultural land along the Cheyenne River upstream of Angostura Reservoir. The park and parking area near the Highway 71 bridge will be flooded and unusable. Water may begin to backup behind the road embankment in places.
3. 3207.0 ftMinor flood stage. Minor flooding of agricultural land along the Cheyenne River upstream of Angostura Reservoir.
4. 3206.0 ftAction stage. Low lying areas of the Cheyenne River upstream of Angostura may flood.

• UpstreamCheyenne River at Edgemont
• DownstreamAngostura Reservoir at Angostura Reservoir
• Hat Creek at Edgemont
• Cottonwood Springs Creek (SD) at Cottonwood Springs Reservoir
• Fall River (SD) at Hot Springs
• Cold Brook Creek at Cold Brook Reservoir
• Cold Brook Creek at Hot Springs
• Beaver Creek (SD) at Buffalo Gap

Forecasts by the Missouri Basin River Forecast Center. Forecasts are not available. Only observed stages are available for this point.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.