USGS Streamgage 06423500
Cheyenne River near Wasta, SD
Cheyenne River near Wasta, SD is USGS streamgage 06423500, monitoring river discharge in hydrologic subbasin 10120111. It drains a watershed of about 12,679 square miles. Discharge records at this site go back to 1914. Typical flow runs near 152.5 cfs in July and 251.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 12,679 sq mi
- Gauge elevation
- 2,265 ft
- Subbasin (HUC-8)
- 10120111
- Coordinates
- 44.0811, -102.40127
- USGS site number
- 06423500
- Records begin
- 1914-10-01 (112 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 63 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 40.9 | 106.1 | 270.9 | |
| February | 57.5 | 137.9 | 381.9 | |
| March | 97.3 | 227.8 | 1,028.8 | |
| April | 91 | 251.3 | 1,244.9 | |
| May | 69.2 | 268.9 | 2,373.5 | |
| June | 53.5 | 258.8 | 2,724.3 | |
| July | 34.3 | 152.5 | 898.2 | |
| August | 43.6 | 110.2 | 509.2 | |
| September | 54.2 | 109 | 330.6 | |
| October | 71.7 | 124.4 | 397.1 | |
| November | 84 | 136.9 | 312.6 | |
| December | 56.4 | 110.5 | 272 |
All values in cubic feet per second (cfs).