USGS Streamgage 13316500
Little Salmon River at Riggins, ID
Little Salmon River at Riggins, ID is USGS streamgage 13316500 in Idaho, monitoring river discharge in hydrologic subbasin 17060210. It drains a watershed of about 576 square miles. Discharge records at this site go back to 1948. Typical flow runs near 510.5 cfs in July and 1,169.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 576 sq mi
- Subbasin (HUC-8)
- 17060210
- Coordinates
- 45.41306, -116.32528
- USGS site number
- 13316500
- Records begin
- 1948-06-01 (78 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 150.9 | 227.5 | 482.9 | |
| February | 162.4 | 267.2 | 677.4 | |
| March | 278.7 | 525.9 | 1,273.5 | |
| April | 615.2 | 1,169.5 | 2,149 | |
| May | 1,213.4 | 2,230 | 3,747.7 | |
| June | 829 | 2,093.3 | 3,695 | |
| July | 232.9 | 510.5 | 1,174.5 | |
| August | 140.8 | 227.6 | 371.8 | |
| September | 125.7 | 196.5 | 303.6 | |
| October | 137.4 | 198.5 | 325.7 | |
| November | 152.4 | 224.6 | 433.8 | |
| December | 151.1 | 222.8 | 538.5 |
All values in cubic feet per second (cfs).