USGS Streamgage 12422500
Spokane River at Spokane, WA
Spokane River at Spokane, WA is USGS streamgage 12422500 in Washington, monitoring river discharge in hydrologic subbasin 17010305. It drains a watershed of about 4,290 square miles. Discharge records at this site go back to 1891. Typical flow runs near 2,473.9 cfs in July and 13,387.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 4,290 sq mi
- Gauge elevation
- 1,723 ft
- Subbasin (HUC-8)
- 17010305
- Coordinates
- 47.65934, -117.4491
- USGS site number
- 12422500
- Records begin
- 1891-04-01 (135 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 135 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 | 2,049.7 | 4,124.2 | 10,095.8 | |
| February | 2,121.4 | 5,236.9 | 11,801.7 | |
| March | 3,160.6 | 7,503.2 | 14,712.9 | |
| April | 7,223 | 13,387.7 | 22,123.3 | |
| May | 7,130 | 17,412.9 | 27,371 | |
| June | 3,295.7 | 8,899.3 | 20,590 | |
| July | 1,366 | 2,473.9 | 6,272.3 | |
| August | 795.8 | 1,522.9 | 2,589.7 | |
| September | 1,043.4 | 1,635.7 | 2,296.3 | |
| October | 1,409.7 | 2,030 | 2,949.7 | |
| November | 1,678 | 2,734 | 5,460.3 | |
| December | 1,873.2 | 3,880 | 9,573.2 |
All values in cubic feet per second (cfs).