Cal. WAT § 2020

(a) At any time after filing of the report by the board as provided in Section 2016 the board, if it appears that underground water is being pumped in an amount which, if not restricted, would destroy or irreparably injure the waters of the basin due to ocean water intrusion before final judgment can be had, may, on notice, pursuant to the provisions of Section 527 of the Code of Civil Procedure, apply to the court for a preliminary injunction, restricting the pumping of water of the basin so as to avoid irreparable injury to, or destruction of, the waters of the basin, and the court may issue the injunction, subject to the provisions of Section 2021, equitably restricting and apportioning the reduction in the pumping of water.

(b) The provisions of this section apply only to actions to determine rights to waters of underground basins located in the arid, southern coastal area defined by the exterior boundaries of the Counties of Santa Barbara, Ventura, Los Angeles, Orange, and San Diego.