USGS Streamgage 12310100
Kootenai River Tribal Hatchery near Bonners Ferry
Kootenai River Tribal Hatchery near Bonners Ferry is USGS streamgage 12310100 in Idaho, monitoring river discharge in hydrologic subbasin 17010104. Discharge records at this site go back to 2002. Typical flow runs near 15,871 cfs in July and 11,862 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Gauge elevation
- 1,774 ft
- Subbasin (HUC-8)
- 17010104
- Coordinates
- 48.70528, -116.36972
- USGS site number
- 12310100
- Records begin
- 2002-10-01 (24 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 21 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 | 4,787.1 | 5,858.7 | 17,706.5 | |
| February | 4,760 | 5,840.3 | 17,857.1 | |
| March | 5,198.4 | 7,900 | 20,883.9 | |
| April | 7,219 | 11,862 | 33,400 | |
| May | 12,410 | 27,803.2 | 38,783.9 | |
| June | 14,340.3 | 26,776.7 | 41,696.7 | |
| July | 8,447.4 | 15,871 | 26,529 | |
| August | 7,691 | 10,748.4 | 17,967.7 | |
| September | 6,796 | 8,038.3 | 10,883.3 | |
| October | 4,773.5 | 5,288.4 | 8,089.7 | |
| November | 5,358 | 12,422.7 | 22,110 | |
| December | 11,560 | 20,790.3 | 28,438.7 |
All values in cubic feet per second (cfs).