USGS Streamgage 13047600
Fall River near Ashton, ID
Fall River near Ashton, ID is USGS streamgage 13047600 in Idaho, monitoring river discharge in hydrologic subbasin 17040203. It drains a watershed of about 337 square miles. Discharge records at this site go back to 1993. Typical flow runs near 632.1 cfs in July and 796.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 337 sq mi
- Subbasin (HUC-8)
- 17040203
- Coordinates
- 44.05611, -111.35861
- USGS site number
- 13047600
- Records begin
- 1993-11-16 (33 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 33 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 | 373.7 | 457.1 | 567.4 | |
| February | 367.2 | 439.6 | 541.1 | |
| March | 381.7 | 453.6 | 621.9 | |
| April | 483.6 | 796.5 | 1,327.2 | |
| May | 1,307.2 | 2,020 | 3,055.8 | |
| June | 832.9 | 1,895.7 | 3,196.3 | |
| July | 381.5 | 632.1 | 1,361.4 | |
| August | 399.2 | 549.3 | 803.9 | |
| September | 405.6 | 529.9 | 739.7 | |
| October | 439.6 | 539.8 | 699.8 | |
| November | 430.2 | 534.1 | 706.3 | |
| December | 403.5 | 485.4 | 607.5 |
All values in cubic feet per second (cfs).