Us Army Corps Of Engineers 201 N 3rd Ave Walla Walla, WA 99362 Phone : (509) 527-7424 Business Category Land Mineral Wildlife & Forest Conservation United States Government--army Dept Of, Corps Of Engineers, Walla Walla District, Information & Directory Service Walla Walla, WA 99362 Phone : (509) 527-7424 Business Category Government Offices-Federal Government Offices & Public Schools