The barren concrete channel has been transformed. Native plants and trees are thriving. Water that once flowed into a flood control channel has now been diverted into a meandering stream that feeds an aquifer and supplies drinking water. Walking paths and bike trails line the restored wash between Vanowen and Oxnard streets in the Valley. This $7-million project—a blend of conservation and recreation—is a model for revitalization efforts all along the L.A. River.