Day use fee $6 per private vehicle; $5 (ages 62+ per private vehicle); $4 (residents of the Contra Costa Water District). Fishing access fee $5; a California fishing license is required. MP3 players for the podcast trail tour can be borrowed free of charge at the interpretive center.
Open daily dawn-dusk. Hours vary seasonally; phone ahead to confirm schedule. Interpretive center open Sat.-Sun. 9-4.