Howard A Hanson Reservoir is a lake in King County, Washington. Its current pool elevation is about 1159 ft (USGS gauge 12105800, 2026-08-11 16:00). We never estimate missing readings — a “—” means no current source.
Full conditions, things to do, and where to stay, eat, and rent on the Howard A Hanson Reservoir guide. More: boat rentals · cabins & rentals · fishing · things to do.