King County used funding to complete final designs (SRFB Manual 18 Appendix D-3) to restore habitat and address limiting factors for the Fall Chinook salmon across more than a half mile of the middle Green River in the Lones reach located on the right bank (between RM 37-38) about six miles east and upriver of the City of Auburn. This project builds upon a feasibility assessment (completed in 2013) and conceptual design work (PRISM Project 15-1291, completed in 2018) focused on identifying and better understanding the habitat benefits, risks, constraints, feasibility and costs of setting back up to three levees in this reach to improve instream, riparian and floodplain habitat. The intent of this future restoration project is to remove constraints to river processes by setting-back levee facilities in the reach in order to maximize juvenile Chinook rearing habitat while protecting adjacent land uses. The final designs call for 1) removing the face rock along the levees which will allow the erosive forces of the river to reintegrate the gravels and sands located beneath the rock veneer into the river channel to enhance spawning potential; 2) constructing underground revetments in the upland agricultural area, outside of the riverine floodway, in order to protect farmland from erosion; 3) installing logs in the floodplain to create roughness features that will interact with high flows and enhance habitat complexity; and 4) revegetating with native trees and shrubs to restore the riparian habitat and floodplain forest. King County has secured full restoration funding (PRISM Project 19-1155) and construction is expected to begin in 2021.