Bennington Lake and Mill Creek Development

  • US Army Corps of Engineers Mill Creek Office 3211 Reservoir Road Walla Walla, WA, 99362 United States

This free event concludes our Learning on the Land education series this year. It is this season's 28th event.

Bennington Lake is part of a flood control project that uses this off-stream reservoir to store water from Mill Creek during a flash flood event.

In the early 1900s, public concern over the frequent flooding of Walla Walla prompted Virgil B. Bennington, then president of the Walla Walla Chamber of Commerce, to lobby the U.S. Congress for flood protection. Development of Mill Creek Dam system was authorized in the 1938 Flood Control Act. The improved Mill Creek channel and off-stream storage reservoir were completed in 1942. Fifty years later in 1992 the lake was named after Bennington.

The system’s limits were severely tested in early 1996 but saved Walla Walla from being flooded. While water flowed over Tausick Way, the lake, dam and creek successfully prevented a local flood.

Enjoy a tour of this flood control system beginning at Bennington Lake, continuing to the Mill Creek Dam and then following Mill Creek toward downtown Walla Walla.

Both the history of this system and proposals for its redevelopment will be explored on this fascinating trek along the banks of Mill Creek. 

Please register for your free tickets now. Ticketing is provided by Universe. When you hit the "Get Tickets" button above, you'll be asked by Universe to sign in or create an account. If you bought tickets online for our events last year, you likely already have an account. If you don't have an account, select the" New account" tab and complete that form. It is quick and will only be required one time. When you get tickets for future events, you'll just need to sign in.

Some events may sell out quickly and registrations are first-come, first-served. 

Need help or have questions? Please email