Sacramento River (mainstem) Restoration In 2018 Story 1

Restoration Stories

In 2018, DWR and the U.S. Bureau of Reclamation updated the fish ladder with a deeper, wider passageway in the weir to facilitate fish passage from the bypass to the river. In designing the Fremont Weir Adult Fish Passage Modification Project, DWR and Reclamation worked with an array of scientists, engineers and landowners from different organizations, including California Trout and American Rivers.  The Yolo Bypass is about 40 miles long, reaching from near Knights Landing down almost to Rio Vista The weir is a 1.8-mile-long concrete structure designed to allow flow into the Yolo Bypass during high-flow events when the Sacramento River is higher than the weir’s crest elevation. The design features an open channel fishway and a modern gate structure that automatically opens when water overtops at the Fremont Weir. Learn more here and here. © California DWR