USGS Streamgage 06421500
Rapid Creek near Farmingdale, SD
Rapid Creek near Farmingdale, SD is USGS streamgage 06421500, monitoring river discharge in hydrologic subbasin 10120110. It drains a watershed of about 603 square miles. Discharge records at this site go back to 1946. Typical flow runs near 45.7 cfs in July and 75.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 603 sq mi
- Gauge elevation
- 2,706 ft
- Subbasin (HUC-8)
- 10120110
- Coordinates
- 43.9421, -102.85392
- USGS site number
- 06421500
- Records begin
- 1946-08-01 (80 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 | 26.1 | 48.7 | 91.4 | |
| February | 30.4 | 49.4 | 96.8 | |
| March | 35.6 | 65.3 | 136.8 | |
| April | 29.7 | 75.1 | 246 | |
| May | 15.7 | 84 | 396.1 | |
| June | 12.9 | 81.5 | 575.9 | |
| July | 8.9 | 45.7 | 238.5 | |
| August | 8.2 | 33 | 170.6 | |
| September | 13.3 | 39.1 | 119.2 | |
| October | 21.2 | 46.7 | 121.4 | |
| November | 32.6 | 53.3 | 101.4 | |
| December | 27.8 | 47.8 | 92 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Rhoads Fork near Rochford, SD
- Castle Creek above Deerfield Reservoir near Hill City, SD
- Castle Creek below Deerfield Dam, SD
- Rapid Creek above Pactola Reservoir at Silver City, SD
- Rapid Creek below Pactola Dam, SD
- Rapid Creek above Johnson Siding below Pactola Dam, SD
- Rapid Creek at Big Bend near Rapid City, SD
- Rapid Creek above Victoria Creek near Rapid City, SD