USGS Streamgage 06479770
Big Sioux River near Bruce, SD
Big Sioux River near Bruce, SD is USGS streamgage 06479770, monitoring river discharge in hydrologic subbasin 10170202. It drains a watershed of about 2,396 square miles. Discharge records at this site go back to 2000. Typical flow runs near 156.1 cfs in July and 345.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 2,396 sq mi
- Gauge elevation
- 1,621 ft
- Subbasin (HUC-8)
- 10170202
- Coordinates
- 44.46752, -96.88742
- USGS site number
- 06479770
- Records begin
- 2000-10-01 (26 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 26 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 | 4.5 | 51.4 | 176.7 | |
| February | 2.1 | 43.7 | 216.8 | |
| March | 6.4 | 183.9 | 1,309.9 | |
| April | 117.3 | 345.7 | 2,375.7 | |
| May | 142.4 | 402.2 | 1,761.3 | |
| June | 86.1 | 295.3 | 1,411 | |
| July | 32.6 | 156.1 | 1,252.8 | |
| August | 20.9 | 127 | 905.5 | |
| September | 23.6 | 84.3 | 936.8 | |
| October | 21.3 | 87.4 | 642.7 | |
| November | 21.6 | 76.5 | 409.3 | |
| December | 11.8 | 52.9 | 250.4 |
All values in cubic feet per second (cfs).