OCR Text |
Show -20- heavy cuts at a cost of not to exceed 8 cents per yard. Reservoirs From the 33rd. mile to about the 45th. mile of the Central canal, a peculiar means of construction will be adopted. Throughout this section there is a range of low hills running parallel with the mesa bluff, and enclosing a strip of land varying in width but at no point exceeding one and one-fourth miles. There are many breaks in this range of hills, but Reservoirs from exact surveys, I find it entirely feasible to close these breaks and instead of a canal proper, to create a series of small reservoirs. In no instance will any of these reservoir banks exceed 15 feet in height. The aggregate length of these reservoirs from Sta. 1770 of the canal survey to the East Branch Fork is 7.2 miles, and the yardage to be moved in construction is 125578 cubic yards. To construct a canal instead of reservoirs over this same distance, would involve the moving of not less than 450000 cu. yds., that is, the reservoirs, aside from their value as storage and settling basins, will actually save nearly 325000 yards in excavation. The reservoir system on the Central canal will extend below the East Branch Fork a distance of between 2 and 3 miles, making nearly 10 miles in all. It is safe to assume that the reservoirs vs. canal, will save the moving of 400000 yards, which represents, at 12^ cents per yard, a total of $50000. |
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. |