The U.S. Army Corps of Engineers (Corps), Walla Walla District, has revised the 1966 Lower Monumental Master Plan and prepared a draft Master Plan with an accompanying draft Finding of No Significant Impact (FONSI) and a draft Environmental Assessment (EA). These documents are available for your review and comment via the links on the right-hand side of this webpage.
Master Plans guide how the Corps manages Lower Monumental project lands surrounding Lake West behind Lower Monumental Dam. Master Plans are about the land – they do not address dam operations (e.g., spill, fish passage, or dam breaching), flood risk management (e.g., levees), or navigation.
Written comments will be accepted from July 20 through August 21, 2020.