Station operated in cooperation with the U.S. Army Corps of Engineers Walla Walla District and Confederated Tribes of the Umatilla Indian Reservation (CTUIR).
NOTE: River forecasts and additional data can be obtained at the National Weather Service's Advanced Hydrologic Prediction Services web page. NOTE: The most current shifted rating for this site can be found at USGS Rating Depot website.
| Boating safety tips |
| Min (1988) | 25th percen- tile | Median | Mean | 75th percen- tile | Most Recent Instantaneous Value Dec 27 | Max (1981) |
|---|---|---|---|---|---|---|
| 560 | 901 | 1180 | 1830 | 2100 | 4200 | 11600 |