The project proposes to reconfigure the Sammamish River Transition Zone, which is at River Mile 13.0-13.5 of the Sammamish River in Marymoor Park. The project area includes the river channel and adjacent undeveloped land to the southwest of the river channel.  You can access the Project Page here.

The project proposes to reconfigure the Sammamish River Transition Zone and adjacent undeveloped King County property in a manner that meets the following three project goals:

1. Ensure the Transition Zone’s capability to provide necessary lake level control, flow conveyance, and downstream flood control.
2. Enhance habitat conditions in the river channel, floodplain, buffers, associated tributaries and adjacent wetlands for ESA-listed Chinook, steelhead, and other fish and wildlife species.
3. Reduce costs, complexity, and ecological impacts of construction, operation and maintenance.