|SAN FRANCISQUITO CREEK BONDE WEIR|
FISH PASSAGE IMPROVEMENT
The Bonde Weir is located just downstream of a Caltrain bridge crossing between the cities of Palo Alto and Menlo Park, California on an incised section of San Francisquito Creek. The weir serves as a grade control structure to prevent streambed degradation beneath the structural supports for the Caltrain bridge and the "El Palo Alto” Redwood tree - California's oldest living historical landmark. Bonde Weir was recognized by the San Francisquito Creek Watershed Council's Steelhead Task Force as a barrier to passage by steelhead trout. At times, upstream-migrating adults as well as out-migrating juvenile steelhead may be delayed or prevented from passing the weir. The San Mateo County Resource Conservation District (SMCRCD), the project sponsor, received a grant from National Fish and Wildlife Foundation's San Francisco Bay Salmonid Habitat Restoration Fund to improve passage at the weir. NHC was contracted by SMCRCD to design a grade control structure to replace Bonde Weir that would meet fish passage needs without adversely affecting stream hydraulics under extreme streamflow events.