USGS Streamgage 06425100
Elk Creek near Rapid City, SD
Elk Creek near Rapid City, SD is USGS streamgage 06425100, monitoring river discharge in hydrologic subbasin 10120111. It drains a watershed of about 211 square miles. Discharge records at this site go back to 1978. Typical flow runs near 2.4 cfs in July and 5.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 211 sq mi
- Gauge elevation
- 2,954 ft
- Subbasin (HUC-8)
- 10120111
- Coordinates
- 44.24026, -103.15129
- USGS site number
- 06425100
- Records begin
- 1978-11-01 (48 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 47 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 | 0 | 2.9 | 18.6 | |
| February | 0 | 4.4 | 19.5 | |
| March | 0 | 6.4 | 27.3 | |
| April | 0 | 5.9 | 53.2 | |
| May | 0 | 7.8 | 150.5 | |
| June | 0 | 4.8 | 119.2 | |
| July | 0 | 2.4 | 37.6 | |
| August | 0 | 0.9 | 24.3 | |
| September | 0 | 0.7 | 16 | |
| October | 0 | 2.2 | 18.6 | |
| November | 0 | 3.4 | 18.5 | |
| December | 0 | 3.2 | 16.9 |
All values in cubic feet per second (cfs).