The Walla Walla Basin Watershed Council began its small-order stream and spring monitoring program in 2002 after the agreement to leave base flows in the main stem of the Walla Walla River went into effect. This network's purpose is to provide the community with supplemental water flow data, which can aid the management of the valley's water and support or assuage the fears of the concerned water users.
The Walla Walla Basin Watershed Council currently monitors 24 sites in the Walla Walla Valley, including springs, small-order streams, and irrigation ditch sites. This monitoring network covers an area bounded by Walla Walla, Milton-Freewater, and Touchet. This monitoring page contains links to historical streamflow sites the WWBWC monitored in the past but are not currently monitored. Below is a map showing historical WWBWC monitoring sites. To view available historical data and web links for each site, click on a point. The Google Earth (.kmz) file is also available for download by clicking on the link below. To view current data, please view our Current Streamflow Data page. For information regarding how the streamflow data were collected please see the WWBWC's Standard Operating Procedures.
If you have questions about this page or the streamflow monitoring network please contact:
Download the Google Earth Streamflow Map (.kmz file)
Download the WWBWC's Standard Operating Procedures V1.3 (2018)
Download the WWBWC's Standard Operating Procedures V1.2 (2013)
WWBWC Historical Near Real-Time Gage Stations
Historical Streamflow Map
| Region ID | Region Name |
| S-100s | Walla Walla River |
| S-200s | Little Walla Walla River/Walla Walla River Irrigation District |
| S-300s | Mud Creek/Fruitvale Water Users Association |
| S-400s | Pine Creek/Hudson Bay District Improvement Comapny |
| S-500s | Mill Creek |
| S-600s | Touchet River |