Welcome to the official U.S. Army Corps of Engineers, Walla Walla District YouTube page. NWW is a full-service, civil works organization, accountable and responsible to the Northwestern Division for the efficient execution of its assigned programs. As the U.S. Army Corps of Engineers interacts with the region, the Walla Walla District maintains and promotes the public image of the U.S. Army Corps of Engineers as a prudent, efficient, and environmentally conscientious planner, builder, and manager of water resources projects.