USGS Streamgage 06431500
Spearfish Creek at Spearfish, SD
Spearfish Creek at Spearfish, SD is USGS streamgage 06431500, monitoring river discharge in hydrologic subbasin 10120203. It drains a watershed of about 165 square miles. Discharge records at this site go back to 1908. Typical flow runs near 55.7 cfs in July and 64.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 165 sq mi
- Gauge elevation
- 3,668 ft
- Subbasin (HUC-8)
- 10120203
- Coordinates
- 44.48248, -103.86159
- USGS site number
- 06431500
- Records begin
- 1908-02-04 (118 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 80 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 | 30.1 | 45.2 | 76 | |
| February | 31.1 | 44.6 | 70.9 | |
| March | 33.1 | 47.7 | 80.5 | |
| April | 41.9 | 64.3 | 112.3 | |
| May | 46.8 | 81.5 | 175 | |
| June | 43 | 68.5 | 134.7 | |
| July | 35.1 | 55.7 | 90.1 | |
| August | 32.3 | 48.9 | 80.8 | |
| September | 31.4 | 46.4 | 76.8 | |
| October | 32.9 | 47.9 | 81.1 | |
| November | 32.8 | 47.3 | 81.1 | |
| December | 30.1 | 45.5 | 78.6 |
All values in cubic feet per second (cfs).