Duwamish Waterway Park Activation

Updated: October 6, 2020

Fall 2020

Project Update:

Construction Begins Press Release (English; Spanish; Vietnamese)

During the purchase of the 1.3 acre property, Seattle Parks and Recreation (SPR) was made aware that the soil beneath the grass next to the river, in a northeastern portion of the property, contained elevated levels of arsenic contamination. In preparation for construction, SPR submitted a cleanup plan to the Washington Department of Ecology with whom they are finalizing the plan.

SPR will begin soil remediation work at the end of September/early October prior to construction of the park project. The soil in the northeastern portion of the park site will be removed and replaced with clean fill. After consulting with SPR arborists and in order to preserve the large trees at the park, SPR will use air spading to remove soil around critical root zones of trees. SPR arborists will oversee this work to minimize impact to the trees and to see that clean soil is correctly placed around them. We anticipate removal of approximately 80 cubic yards of soil or more in this initial action. Most of the cleanup work will be completed before the park renovation begins; any remaining cleanup on SPR property will be coordinated with construction of park improvements. Cleanup on non-Seattle Parks and Recreation property is not included in this project.
Duwamish Waterway Park plan rendering thumbnail image and link to PDF of same
Duwamish Waterway Park Improvements Plan Rendering


Duwamish Waterway Park, 7900 10th Ave S, 98108


Working with Seattle Parks Foundation, the Friends of Duwamish Waterway Park raised over $1 million for the park renovation.


Planning: 2013 - 2015
Design: Summer 2019
Construction: Fall 2020
Completion: Early 2021

Project Description

Public planning through the Duwamish River Cleanup Coalition's Healthy Communities program (2013) and Seattle Parks Foundation's South Park Green Spaces Vision Plan (2014) have identified Duwamish Waterway Park as a key open space in the community in need of improvement. There is a strong interest from the community to create more amenities to draw people to the park.

The community vision provides significant improvements to the park to make it a healthy and welcoming space for families, young people, and seniors. The Friends of Duwamish Waterway Park have led the years-long effort to translate the community's vision for the park into a final design. The community driven design provides more welcoming park entries and includes:

  • an improved perimeter pathway with a series of interpretive artwork boulders that enhance the river view with messages relating to the community and the area history; 
  • an all-ages accessible playground including a climbing structure and zip line as well as boulders, logs, and benches; and
  • new park furnishings with accessible picnic tables, barbecues, drinking fountain and foot wash, additional benches, and bike racks.