USGS Streamgage 13066000
Blackfoot River near Shelley, ID
Blackfoot River near Shelley, ID is USGS streamgage 13066000 in Idaho, monitoring river discharge in hydrologic subbasin 17040207. It drains a watershed of about 897 square miles. Discharge records at this site go back to 1903. Typical flow runs near 714.4 cfs in July and 207.9 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Drainage area
- 897 sq mi
- Subbasin (HUC-8)
- 17040207
- Coordinates
- 43.26278, -112.04778
- USGS site number
- 13066000
- Records begin
- 1903-04-27 (123 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 117 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 | 50.7 | 79.5 | 185.7 | |
| February | 56.1 | 87.6 | 210.6 | |
| March | 72.5 | 106.8 | 374.6 | |
| April | 96.1 | 207.9 | 748.7 | |
| May | 163.1 | 452.1 | 1,228.7 | |
| June | 298.8 | 675 | 1,261.7 | |
| July | 371.2 | 714.4 | 1,020.1 | |
| August | 277.4 | 551.5 | 815.1 | |
| September | 161.6 | 353.1 | 633.7 | |
| October | 77.3 | 133.5 | 390.4 | |
| November | 62.3 | 92.3 | 326.3 | |
| December | 51.7 | 82.2 | 195.9 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Blackfoot River below North Canal at Blackfoot, ID
- Blackfoot River Bypass near Blackfoot, ID
- Blackfoot River near Blackfoot, ID
- Blackfoot River and Bypass Channel near Blackfoot, ID
- Grays Lake Diversion to Blackfoot River Basin near Wayan, ID
- Sand Creek near Ucon, ID
- Blackfoot River Ab Reservoir near Henry, ID