Cal. Harb. & Nav. Code § 4007

The grant conveys to the grantee or applicant the right of way and all necessary use, for the purposes of the wharf or chute, of any of the overflowed, submerged, or tidelands belonging to the State, and a right of way over any swamp, overflowed, marsh, or tidelands lying between the wharf or chute and high or dry land, fifty feet in width, for twenty years. The grant shall particularly describe the extent of the property subject to the right of way.