Us Army Corps Of Engineers Howard A Hanson Dam Ravensdale, WA 98051 Phone : (360) 886-2911 Business Category Land Mineral Wildlife & Forest Conservation United States Government--bothell-kirkland-redmond & Vicinity Offices, Army Dept Of, Corps Of Engineers, Hiram M Chittenden Locks, Howard A Hanson Dam Black Diamond, WA 98010 Phone : (360) 886-2911 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--army Dept Of, Corps Of Engineers, Howard A Hanson Dam Palmer Black Diamond, WA 98010 Phone : (360) 886-2911 Business Category Government Offices-Federal Government Offices & Public Schools