| OCR Text |
Show is 1,405 feet. The 1,617 feet of pumping lift required to overcome this difference in elevation and provide the necessary slope in the 242 miles of waterway is accomplished in 5 pumping plants located at points along the route. The hydraulic grade reaches a maximum elevation of 1,807 feet at the top of the Hayfield lift and from this point the flow is entirely by gravity to the terminal reservoir at Lake Mathews. (c) Cost-approximately $15,904,952. 10. Tunnels: (a) Description-A typical main aqueduct tunnel is of horse-shoe section, lined with concrete of a minimum thickness of 6 inches on the side and 9 inches in the arch, and 16 feet high and 16 feet wide, except Bernasconi and Valverde Tunnels which are slightly smaller. The nominal designed capacity of each tunnel is 1605 c.f.s., but observed construction procedures and operating experience indicate an ultimate capacity of not less than 1800 c.f.s. (See photographs, Plates 9, 12, 14, 14A, and 14B.) (b) Function-to carry the water through mountainous terrain to the terminal storage reservoir at Lake Mathews. (c) Aggregate Length of Tunnels-approximately 92 miles. (d) Cost-approximately $70,199,765. 11. Canals and Appurtenances: (a) Description-A typical main aqueduct canal is approximately 55 feet wide, exclusive of a 20- |
| Source |
Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : California exhibits. |
