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Show PROBLEMS OF IMPERIAL VALLEY AND VICINITY. 83; "d" line canal* (pumping) system. Net area, 36,000 acres in United States and 8,000 acres in Mexico. Canal capacity at head for United States lands^, 1 second-foot to 85 acres, of 425 second-feet; base, 25 feet,' depth, water^ feet;^V=3.1. Capacity at end, 25 second-feet; base,-7 feet; depth, 2 feet. S=0.OuO35. Length, 17.5 miles. For 'excavation add 50 per cent to economic cut; average, 460 cubic yards per 100 feet, or 24,290 cubic yards per mile. Estimate of cost. Excavation, 425,000 cubic yards, at 25 cents.>................:...___.... $106, 200 3 bridges............................................................... 9, 000 5 Checks with drops and turnouts...........<y.......................... 37, 600 Pumping plant,1 capacity, 500 second-feet; static lift, 30 feet; total horsepower required, 2,250, at $88............;;i.i___%A................ 198, 00ft Transmission line (No. 6 wire), 11.5 miles, at $1,330....i.\___....___... 15,300 Lateral system, 44,000 acres, at $16____..............i.................. 704, 000 Telephone system, 17.5 miles, at $250________»..___.. :......;..¦...... 4,400 Total..........................___-,..-............:............ 1,074,500 Administration, engineering, and contingencies, 25 per cent___.......... 268, 500 Total''D" line system........................................... 1,343^000 Forty-four thousand acres, at $30.60. ," LINE CANAL (FOR NEW LANDS ONLY). Net area 33,000 acres, 10,000 under proposed gravity and 23'000 under proposed pumping (lift 125 feet). Length of canal, 20.6 miles. For excavation add 50 per cent to economic cut. ; Excavation 910,000 cubic yards, at 25 cents.........____¦.... 6 bridges, at $3,000...............>.:...........J....I.......'.. 10 siphons, 1,400 feet (1 tube), at $6,625 per 1Q0 feet____...:...,. 3 arroyo crossings, at $2,700... V..............t....',.:......... 4 checks and turnouts, at $6,600...*.......___...... r»,. ..i.:.... 1 wasteway............................................. ^.'.»."*,, Telephone line, 20.6 miles, at $250...........:.......!........... Total.........................'..„...............¦.. .-• +.. Administration, engineering, and contingencies, 25 per cent..>.... Totah....................»............................ "B" LINE CANAL (FOR OLD ANO NEW LAN'Ds). Net area, 123,000 acres; including 90,000 under present canal, 10,000 under proposed gravity, and 23,000 under proposed pumping (lilt, 125 feet). Length of canal, 20.6 miles. For excavation add 50 per/Cent to economic cut. 1 Far details see table "Pumping plants, Imperial Valley investigations," ia Exhibit A following.: |
