Cherry Creek (CC) is the Snoqualmie River's lowest major tributary; its location provides high recovery-benefit potential for listed Puget Sound chinook and other salmonids. An agricultural drainage system (ADS) - 10,200-m of ditched channels, a 2,100-m levee, and a pumphouse-disconnects lower CC from its floodplain. The ADS disassociates CC from important salmonid rearing-and spawning-habitat creation and maintenance processes. The pumphouse impedes access to 12,000-m of spawning and rearing habitat, requires significant maintenance and is unscreened, causing direct mortality of juvenile chinook and other salmonids. Wild Fish Conservatory collaborated with Drainage District #7 (DD#7), WDFW, NMFS, and affected landowners to develop ecologically sound solutions for restoring lower CC floodplain processes, while addressing the needs of DD#7. The feasibility study reconstructed historical floodplain conditions; collected and modeled elevation, groundwater, sediment-transport, hydrologic, and flooding data; and assessed DD#7 needs. Recent floodplain water-quality and fish-species composition and distribution data was be incorporated. WFC presented the evaluated restoration-alternatives to projects collaborators, and sought consensus on selecting an appropriate alternative. Upon final selection, WFC developed a construction design. WFC sought permitting/implementation funding from King and Snohomish Counties, WDOT, the Army Corps of Engineers, and the SRFB.