Portage Bay is a body of water, often thought of as the eastern arm of Lake Union, that forms a part of the Lake Washington Ship Canal in Seattle, Washington.
Looking east across Portage Bay to University Bridge and beyond; the University of Washington's south campus can be seen under the bridge.
Union Bay is a body of water located in Seattle, Washington. Part of Lake Washington, it is bounded by the Laurelhurst neighborhood to the north and the Montlake and Madison Park neighborhoods to the south. The Evergreen Point Floating Bridge, which carries State Route 520, crosses over a portion of the bay.
Union Bay viewed from the Natural Area with Laurelhurst, the Evergreen Point Floating Bridge and Madison Park (left to right) in the background