USGS Streamgage 06400875
Horsehead Creek at Oelrichs, SD
Horsehead Creek at Oelrichs, SD is USGS streamgage 06400875, monitoring river discharge in hydrologic subbasin 10120106. It drains a watershed of about 188 square miles. Discharge records at this site go back to 1983. Typical flow runs near 0 cfs in July and 0.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 188 sq mi
- Gauge elevation
- 3,319 ft
- Subbasin (HUC-8)
- 10120106
- Coordinates
- 43.18803, -103.22659
- USGS site number
- 06400875
- Records begin
- 1983-06-01 (43 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 43 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 | 0 | 0.4 | |
| February | 0 | 0.1 | 2.3 | |
| March | 0 | 0.1 | 21.3 | |
| April | 0 | 0.2 | 22.2 | |
| May | 0 | 0.3 | 46.7 | |
| June | 0 | 0.2 | 52.1 | |
| July | 0 | 0 | 2.4 | |
| August | 0 | 0 | 0.3 | |
| September | 0 | 0 | 0 | |
| October | 0 | 0 | 0.3 | |
| November | 0 | 0 | 0.3 | |
| December | 0 | 0 | 0.4 |
All values in cubic feet per second (cfs).