DESCRIPTION
The construction of Duwamish Gardens was completed in January, 2017. The main goal of the project -- to create off channel, shallow water salmonid habitat--has been achieved. The project created a 2.34 acre park and salmon habitat restoration site that includes 0.37 acres of mudflat, 0.47 acres of emergent marsh, and 1.13 acres of riparian and upland forest habitat. The primary targetted species in the threatened Puget Sound Chinook salmon, with a focus on salmonids, which require lacking shallow water habitat in the fresh-to-salt water transition zone. The site will support all the salmon and trout species that use this estuary environment, plus birds, including osprey and heron. Harbor seals and river otter have been seen using the site. The project successfully accomplished its outdoor recreation goals, which were to provide water access, views, and interpretive opportunities. Roughly 950 lineal feet of public trail meanders through the park, connecting 3 viewpoints with the park's main gathering circle; one viewpoint features an interpretive art piece and an interpretive sign; the highest viewpoint, which lilke the entire trail system is ADA accessible, features an interpretive sign. The signs tell the story of the site's history and the people that have used the river for millennia.
The RCO grant funds were essential to this project. The site had been a farm, but had been out of operation for some time. Two residential homes and several outbuildings needed to be removed from the site, as did the thick mass of Himalayan blackberry, which blanketed the steep slopes and much of the level areas. Perhaps the most significant task, in terms of level of effort, that the grant supported was the removal of approximately 30,000 cubic yards of soil, which were excavated up to 25' in depth to reach shallow-water elevations. Most material was removed from the site, except for about 1,000 cubic yards that remained on site to create berms and landforms to buffer views of adjacent industrial uses. The funding contributed to the purchase and installation of nearly 5,000 native plants, and more than 30 pieces of large woody debris and 5 habitat snags. The grant funding contributed to project fencing, to protect habitat elements and control access, as well as park interpretive elements.