USGS Streamgage 06412500
Rapid Creek above Canyon Lake near Rapid City, SD
Rapid Creek above Canyon Lake near Rapid City, SD is USGS streamgage 06412500, monitoring river discharge in hydrologic subbasin 10120110. It drains a watershed of about 374 square miles. Discharge records at this site go back to 1946. Typical flow runs near 74.8 cfs in July and 32 cfs in April, with the higher of the two arriving in July.
Gauge details
- Drainage area
- 374 sq mi
- Gauge elevation
- 3,406 ft
- Subbasin (HUC-8)
- 10120110
- Coordinates
- 44.05277, -103.31185
- USGS site number
- 06412500
- 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 | 5.3 | 15.5 | 48.5 | |
| February | 6.1 | 15 | 46.1 | |
| March | 7.1 | 19.4 | 67.6 | |
| April | 7.8 | 32 | 141.1 | |
| May | 19.3 | 63.1 | 293.3 | |
| June | 25.7 | 68.8 | 436.7 | |
| July | 38.5 | 74.8 | 185.6 | |
| August | 30.9 | 55.9 | 138.9 | |
| September | 17.6 | 37.3 | 89.4 | |
| October | 6.5 | 19.6 | 65.5 | |
| November | 5.5 | 17.2 | 50.6 | |
| December | 5.1 | 13.8 | 50.2 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Wild Irishman Gulch near Rapid City, SD
- Cleghorn Springs at Rapid City, SD
- Rapid Creek below Cleghorn Springs at Rapid City, SD
- South Canyon near Rapid City, SD
- Rapid Creek at Rapid City, SD
- Rapid Creek below Hawthorn Ditch at Rapid City, SD
- Rapid Creek above Wrf near Rapid City, SD
- Rapid Creek near Farmingdale, SD