Historically, this portion of the Green/Duwamish River had a broad and connected floodplain with estuarine marshes and sloughs. This is an important area as it is the lower end of a fresh water intertidal area where only a minimal amount of salt water makes it to the river. Juvenile Chinook salmon come down and migrate through the area.

Immediately prior to restoration the site held a dairy farm and pea patch. In 2005, the U.S. Army Corps of Engineers and the City of Tukwila partnered to create a backwater slough by excavating to an elevation of +2 MLLW. Riparian and wetland plants were installed around the slough and pool habitat was created through excavation and large wood placement. Large wood was placed in front of excavated pools to add stream shade and structure. Large rocks were also placed to break up the flow within the backwater channel. The site is approximately 2 acres. The original goal of the project was to restore tidal hydrology by creating a slough, providing rearing and feeding habitat for juvenile salmonids as well as providing an educational outreach to the public through the use of interpretation signs and observation areas. The original interpretive signage and observation platforms were never installed.

This information from USACE/Green River Green/Duwamish Restoration Program Draft Restoration Plan (June 2000).