Cal. Wat. Code § 275 : CALIFORNIA WATER CODE — GENERAL STATE POWERS OVER WATER — MISCELLANEOUS POWERS OF DEPARTMENT — PROCEEDINGS TO PREVENT WASTE OR UNREASONABLE USE — Proceedings to prevent waste, unreasonable use, unreasonable method of use, or unreasonable method of diversion of water TEXT PDF The department and board shall take all appropriate proceedings or actions before executive, legislative, or judicial agencies to prevent waste, unreasonable use, unreasonable method of use, or unreasonable method of diversion of water in this state. Ca. Water Code § 275 Amended by Stats. 1971, Ch. 794.