As Modified on Denial of Rehearing March 23, 1979. Opinion on pages 1-17 omitted. HEARING GRANTED [*] For Opinion on Hearing, see 162 Cal.Rptr. 30, 605 P.2d 859. P. A. Towner and John R. Kramer, State of Cal., Dept. of Water Resources, Sacramento, for amicus curiae on behalf of plaintiff and appellant. [153 Cal.Rptr. 144]Evelle J. Younger, Atty. Gen., Robert H. Connett, Asst. Atty. Gen., Joel S. Moskowitz, Deputy Atty. Gen., for plaintiff and appellant. Green, Green & Rigby and Denslow B. Green,