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Show 82 PROBLEMS OF IMPERIAL VALLEY AND VICINITY. From railroad crossing at Iris to end: Excavation, 5,627,000 cubic yards, at 25 cents.....................$1,406, 800 Excavation. 347,000 cubic yards, at 60 cents........................ 208, 200 5 bridges^ at $4,800.......................................,.......... 24,000 6 bridges, at $4,500................................................ 27,000 10 bridges, at $3,000................................................ 30,000 3 checks and turnouts, at $13,700...........................______ 41,100 6 checks and turnouts, at $11,700.................................. 70,200 14 checks and turnouts, at $6,600.................................., 92,400 47 siphons, 10,000 feet (2 tubes), at $13,435 per 100 feet............. 1, 343, 500 18 siphons, 3.000 feet (1 tube), at $6,625'per 100 feet... V?;......___ 198, 800 30 arroyo crossings, at $7,000....................................... 210,000 10 arroyo crossings, at $5,800....................................... 58,000 10 arfoyo crossings, at $3,700....................................... 37,000 3,000 feet sidehill concrete flume (capacity 960 second-feet), at $40.. 120, 000 2 concrete drops.......___....................................... 25,000 3 wasteways.......................................:.......!...... 30,000 Telephone line, 100 miles, at $250................................. 25, 000 Lateral system, 77,000 acres, at $16......................i...,..:.. 1, 232,000 Total.......................................................... 5,179,000 Administration, engineering, etc., 25 per cent..___................ 1,295,000 Total below Iris................................................ 6, 474,000 Seventy-seven thousand one hundred acres, at $84. Summary of "A " line: Total.above Iris.........,............................___......... 4, 467,000 Total below Iris.................................................. 6, 474,000 Total "A " line................................................ 10, 941,000 One hundred and seventy-seven thousand acres, at $61.50. South side of All-American Canal (gravity): Eight thousand eight.hundred acres in the United States and 22,000 acres in Mexico. Capacity required in All-American Canal, 308 second-feet. Estimate of cost. Lateral system, 30,800 acres, at $16..........___...................... $492,800 Administration, engineering, etc., 25 per cent......................___ 123, 200 Total (30,800 acres, at $20)........................................ 616, 000 "e" line canal system. Net area, 15,700 acre3. Length of canal, 6 miles. Canal capacity at head, 180. second-feet; base, 17 feet; depth, water, 4 feet; V=2.4; S=0.0003. For excavation add 50 per cent to economic cut. Estimate oncost. Excavation, 127,200 cubic yards, at 25 cents................................ $31, 800 3 bridges, at $1,425....................>.................................... 4, 300 2 checks with turnouts, at $3,130......i.................................. 6.300 Lateral system, 15,700 acres, at $16........................................ 251, 200 Telephone system, 6 miles, at $250...........'............................ 1, 500 Total...........................................................295,100 Administration, engineering, and contingencies, 25 per cent................ 73, 900 Total "E " line system............................................369, 000 Fifteen thousand seven hundred acres, at $23.50. |