USGS Streamgage 14018500
Walla Walla River near Touchet, WA
Walla Walla River near Touchet, WA is USGS streamgage 14018500 in Washington, monitoring river discharge in hydrologic subbasin 17070102. It drains a watershed of about 1,657 square miles. Discharge records at this site go back to 1949. Typical flow runs near 36.9 cfs in July and 952.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 1,657 sq mi
- Subbasin (HUC-8)
- 17070102
- Coordinates
- 46.02761, -118.72969
- USGS site number
- 14018500
- Records begin
- 1949-02-01 (77 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 372.5 | 742.5 | 2,146.1 | |
| February | 463 | 948.2 | 2,341.7 | |
| March | 467.1 | 1,063.7 | 2,380.6 | |
| April | 430.8 | 952.7 | 2,168.7 | |
| May | 189.2 | 648.4 | 1,467.1 | |
| June | 40.3 | 182.6 | 770.5 | |
| July | 8.6 | 36.9 | 90.8 | |
| August | 4 | 15.2 | 43.1 | |
| September | 7.3 | 32.2 | 83.6 | |
| October | 18.2 | 57.2 | 142.2 | |
| November | 85.2 | 189.8 | 572.9 | |
| December | 237.5 | 509.8 | 1,498.4 |
All values in cubic feet per second (cfs).