The Tulalip Tribes along with the US Army Corps of Engineers (Corps), completed construction of the Qwuloolt Estuary Restoration Project, a broad-based interagency and community effort to restore historic tidal processes and a functioning estuary intertidal marsh system to approximately 354 acres of isolated floodplain in lower Snohomish River estuary, in Marysville, WA. The project restored natural hydrologic connection and functions to historic floodplain wetlands and two stream systems, providing unrestricted fish access to 16 miles of upstream spawning and rearing habitat. Restoration work included channel excavation and ditch filling, treatment of invasive reed canary grass, restoration and relocation of more than 1 mile of historic stream channel and construction of new tidal channels, construction of approximately 3,950 feet (8 acres) of the west setback levee, and lowering and breaching the old Ebey Slough levee, planting of riparian areas within and on the perimeter of the project, storm water and sewer facility modifications, as well as project permitting, design, and management tasks. Washington State funds contributed significantly to levee construction and supplement tribal funds to meet a 35% local cost-share obligation for working with the Corps under the Puget Sound and Adjacent Waters Program. These grant funds contributed to permitting, design and engineering, construction management, removal of 1600 ft. of old levee, stormwater facility modification and construction, sewerline modifications, 0.53 miles of channel construction, and 5.9 acres of plantings. The acres planted were less then planned because of property exchange and one landowner deciding against planting. Cultural resource assessments and planting actions were part of and completed during project planning and implementation, but were paid also paid for in part by other grant sources. Total overall project costs, including acquisition, studies, plans and designs, and construction amounted to $21,155,854.