Judgment reversed and cause remanded with instructions.
Shute & Elsing, Phoenix, for appellant.
Kramer, Morrison, Roche & Perry and Burr Sutter, Phoenix, and Harry W. Bagnall, Jr., Coolidge, of counsel, for appellee.
Jennings Strouss, Salmon & Trask, Charles L. Strouss, Phoenix, for Salt River Agricultural and Power Dist., amici curiae.
Campbell, Rolle & Jones, James B. Rolle, Jr., Yuma, for Yuma Irr. Dist., amici curiae.
Westover & Mansfield, J. D. Mansfield, Yuma, for Unit B -- Irrigation & Drainage Dist. and North Gila Valley Irr. Dist., amici curiae.
Reed & Wood, Charles H. Reed, Coolidge, for San Carlos Irr. Dist., amici curiae.
Guy Anderson, Safford, for Gila Valley Irr. Dist., amicus curiae.
A. Van Wagenen, Jr., Phoenix, for Electrical Dist. No. 2, Pinal County, and Electrical Dist. No. 5, Pinal County, amicus curiae.
Louis B. Whitney, Phoenix, for Electrical Dist. No. Four, Pinal County, amicus curiae.
Fred A. Ironside, Jr., Phoenix, for Roosevelt Water Conservation Dist., amicus curiae.
Stanford, Justice. Udall, C. J., and Phelps, De Concini and La Prade, JJ., concur.