The
Damon Marsh is a tidal
wetland at the northern edge of
San Leandro Bay in
Oakland, California, USA. There is a paved long shoreline trail along the waterfront to allow visual access to the San Leandro Bay and through the marsh itself. One end of this trailhead lies at Damon Slough. Access to the marsh is via the Hegenberger Road exit of
Interstate 880. A 1989 biological study of the Damon Marsh found that this
habitat supports the
California clapper rail (
Rallus longirostros obsoletus), a State and Federally listed
endangered avian species.