USGS Streamgage 06357800
Grand River at Little Eagle, SD
Grand River at Little Eagle, SD is USGS streamgage 06357800, monitoring river discharge in hydrologic subbasin 10130303. It drains a watershed of about 5,316 square miles. Discharge records at this site go back to 1958. Typical flow runs near 94.3 cfs in July and 159.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 5,316 sq mi
- Gauge elevation
- 1,629 ft
- Subbasin (HUC-8)
- 10130303
- Coordinates
- 45.65777, -100.81819
- USGS site number
- 06357800
- Records begin
- 1958-08-01 (68 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 68 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 | 21.5 | 86.1 | |
| February | 0.3 | 41.1 | 334.7 | |
| March | 26.6 | 173.3 | 2,280.5 | |
| April | 35.8 | 159.1 | 1,955.7 | |
| May | 26.2 | 146 | 1,338.6 | |
| June | 26.1 | 150.3 | 917.2 | |
| July | 17.4 | 94.3 | 496.4 | |
| August | 12.4 | 66.1 | 268.5 | |
| September | 10.1 | 63.4 | 190.9 | |
| October | 11.8 | 61.6 | 253.8 | |
| November | 11.1 | 51.5 | 170.2 | |
| December | 2.6 | 30.2 | 97.8 |
All values in cubic feet per second (cfs).