Government Code – GOV § 43450
Pursuant to this article, any city whose corporate limits include or front upon any harbor, bay or estuary, or other navigable water, whether the tidelands or waterfront is owned or controlled by it or by the State, either in whole or in part, may incur an indebtedness for:
(a) The improvement, repair, and maintenance of its harbor.
(b) The erection of wharves, piers, seawall, state or municipal railroad and spurs along the harbor.
(c) Betterments, appurtenances, and dredging and filling necessary in connection with the harbor.