USGS Streamgage 12417650
Spokane River below Blackwell near Coeur D Alene, ID
Spokane River below Blackwell near Coeur D Alene, ID is USGS streamgage 12417650 in Idaho, monitoring river discharge in hydrologic subbasin 17010305. It drains a watershed of about 3,702 square miles. Discharge records at this site go back to 2014. Typical flow runs near 1,397 cfs in July and 10,906.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 3,702 sq mi
- Gauge elevation
- 2,123 ft
- Subbasin (HUC-8)
- 17010305
- Coordinates
- 47.69472, -116.81528
- USGS site number
- 12417650
- Records begin
- 2014-07-22 (12 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 11 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 | 2,442.3 | 3,832.3 | 8,494.5 | |
| February | 2,646.1 | 5,986.2 | 17,873.2 | |
| March | 2,687.1 | 7,601.6 | 25,583.9 | |
| April | 5,367.3 | 10,906.3 | 22,676.7 | |
| May | 4,233.2 | 13,773.2 | 22,712.9 | |
| June | 1,698.7 | 4,789 | 17,449.7 | |
| July | 837.4 | 1,397 | 2,766.1 | |
| August | 710.2 | 925.2 | 1,169.8 | |
| September | 757.8 | 1,165.7 | 1,659.6 | |
| October | 1,070.8 | 1,802.6 | 3,369 | |
| November | 1,968.3 | 2,887 | 6,190.3 | |
| December | 2,233.9 | 3,846.5 | 5,871.9 |
All values in cubic feet per second (cfs).