Rivers in South Dakota
Cheyenne River at Edgemont
Below flood stage
1.40ftStage
Observed Thu, Oct 1, 12:00 PM MDT
- Flood stage
- 9.00 ft
- Record crest
- 14.00 ft1922
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 13.00 ft |
| Moderate flood | 11.00 ft |
| Minor flood | 9.00 ft |
| Action | 8.00 ft |
- 14.00 ftHighest known flood occurred May 1 1922.
- 13.65 ftHighest flood for the period of record occurred May 20 1978.
- 13.00 ftMajor Flood Stage. Extensive flooding along the Cheyenne River upstream of Angostura Reservoir with inundation of structures and roads possible.
- 11.00 ftModerate Flood Stage. Widespread flooding of agricultural land along the Cheyenne River upstream of Angostura Reservoir.
- 9.00 ftMinor Flood Stage. Minor flooding of agricultural land along the Cheyenne River upstream of Angostura Reservoir.
- 8.00 ftAction stage and bankfull stage. The lower portions of the left bank begins to overflow. Flooding of low-lying areas along the Cheyenne River.
Crest history
89 crests on NOAA’s list since 1905.
| # | Date | Stage |
|---|---|---|
| 1 | May 1, 1922 | 14.00 ft |
| 2 | May 20, 1978 | 13.65 ft |
| 3 | May 12, 1920 | 13.00 ft |
| 4 | June 17, 1962 | 11.46 ft |
| 5 | May 25, 1971 | 10.57 ft |
| 6 | July 30, 1905 | 10.50 ft |
| 7 | June 3, 1929 | 9.86 ft |
| 8 | June 2, 1991 | 9.60 ft |
| 9 | May 25, 2008 | 9.60 ft |
| 10 | June 5, 2015 | 9.54 ft |
| 11 | March 22, 2019 | 9.41 ft |
| 12 | June 17, 1965 | 9.30 ft |
| 13 | June 28, 1952 | 9.29 ft |
| 14 | May 25, 1957 | 9.05 ft |
| 15 | March 12, 2011 | 8.74 ft |
| 16 | June 1, 2018 | 8.32 ft |
| 17 | July 20, 1969 | 8.19 ft |
| 18 | August 8, 1955 | 8.02 ft |
| 19 | March 15, 2011 | 8.00 ft |
| 20 | July 20, 1958 | 7.71 ft |
| 21 | June 18, 1932 | 7.70 ft |
| 22 | June 13, 1999 | 7.60 ft |
| 23 | May 22, 1954 | 7.57 ft |
| 24 | August 20, 1993 | 7.56 ft |
| 25 | July 3, 1951 | 7.44 ft |
Most recent crests
- October 15, 2023: 4.79 ft
- July 9, 2023: 4.86 ft
- June 8, 2022: 2.28 ft
- May 24, 2021: 4.83 ft
- March 8, 2020: 4.51 ft
- March 3, 2020: 6.68 ft
- March 22, 2019: 9.41 ft
- June 1, 2018: 8.32 ft
- June 15, 2017: 3.72 ft
- July 31, 2016: 2.46 ft
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are not available. Only observed stages are available for this point. Gauge reading may be affected by ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.