USGS Streamgage 06478513
James River near Yankton, SD
James River near Yankton, SD is USGS streamgage 06478513, monitoring river discharge in hydrologic subbasin 10160011. It drains a watershed of about 20,962 square miles. Discharge records at this site go back to 1981. Typical flow runs near 1,164.1 cfs in July and 1,272.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 20,962 sq mi
- Gauge elevation
- 1,156 ft
- Subbasin (HUC-8)
- 10160011
- Coordinates
- 42.99583, -97.36978
- USGS site number
- 06478513
- Records begin
- 1981-07-10 (45 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 45 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 | 27 | 142.4 | 889.5 | |
| February | 30.5 | 151.9 | 1,081.9 | |
| March | 97.9 | 696.1 | 8,505.2 | |
| April | 104.2 | 1,272.3 | 13,410 | |
| May | 177.1 | 1,404.8 | 11,071.3 | |
| June | 160.8 | 1,427.9 | 9,857 | |
| July | 64.5 | 1,164.1 | 8,659.4 | |
| August | 37.3 | 530.6 | 6,126.5 | |
| September | 20.6 | 459.4 | 3,034.7 | |
| October | 17.3 | 423.1 | 2,537.4 | |
| November | 28.3 | 300 | 2,570 | |
| December | 21 | 242.4 | 1,802.6 |
All values in cubic feet per second (cfs).