USGS Streamgage 06438500
Cheyenne River near Plainview, SD
Cheyenne River near Plainview, SD is USGS streamgage 06438500, monitoring river discharge in hydrologic subbasin 10120112. It drains a watershed of about 21,351 square miles. Discharge records at this site go back to 1920. Typical flow runs near 417.1 cfs in July and 454.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 21,351 sq mi
- Gauge elevation
- 1,859 ft
- Subbasin (HUC-8)
- 10120112
- Coordinates
- 44.52943, -101.93015
- USGS site number
- 06438500
- Records begin
- 1920-05-01 (106 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 35 | 108.8 | 503.6 | |
| February | 66 | 186.3 | 787.1 | |
| March | 121.3 | 391.2 | 2,723.3 | |
| April | 131 | 454.6 | 2,273.3 | |
| May | 117.9 | 534.3 | 5,301 | |
| June | 193.1 | 667.8 | 5,360.7 | |
| July | 140.8 | 417.1 | 1,673.5 | |
| August | 168.5 | 382.8 | 953 | |
| September | 168.2 | 324.9 | 632.8 | |
| October | 113 | 218.6 | 650.9 | |
| November | 100.5 | 175.2 | 482.2 | |
| December | 69.4 | 139.1 | 449.9 |
All values in cubic feet per second (cfs).