190 



FORESTRY AND IRRIGATION 



April 



complain if he accepts the offer know- 

 ing that, as a result, his land will have 

 a ready sale at $100 per acre or more. 



Rapid "Work on Miiiicloka Project. 



Work on the Minidoka project, 

 Idaho, is being pushed vigorously and 

 rapid progress is being made. The Sec- 

 cretary of the Interior advertised for 

 bids for the construction of about 21 

 miles of main canals and 102 miles of 

 branches and laterals on April I2th. 

 This work will involve the excavation 

 of about 3,500,000 cubic yards of 



The Mindoka dam, spillway, and 

 forebay canal now being rapidly 

 pushed to completion, involve the ex- 

 cavation of 205,300 cubic yatds of ma- 

 terial. The dam is of the rock fill type, 

 and will be 650 feet long on top, 50 

 feet high, and requires the placing of 

 110,000 cubic yards of rock, 101,000 

 cubic yards of earth, 1,200 square 

 yards of rip rap, and 1,000 cubic yards 

 concrete core wall. In the spillways 

 there will be 3,000 cubic yards of con- 

 crete, 8,000 cubic yards of rock em- 

 bankments, 6,500 cubic yards concerte 





Canyon Above Reservoir Site, Salt River, Arizona, Looking Downstream. 



earth, 45,000 cubic yards of loose rock, 

 and 170,000 cubic yards of solid rock, 

 and the erection of structures involv- 

 ing 2,000 cubic yards of masonry, 58,- 

 ooo pounds of steel, 68,000 pounds of 

 cast iron, and 140,000 feet B. M., of 

 lumber. 



Specifications, forms of proposal 

 and plans are now on inspection at the 

 office of the Chief Engineer of the Re- 

 clamation Service, Washington, D. 

 C., and at the office of District Engi- 

 neer D. W. Ross, Boise, Idaho. 



in canal, 3,000 pounds of steel in the 

 same, and 57,500 pounds of steel gates 

 and guides for power and irrigation 

 canals. 



At the dam site the river flows 

 through a low ridge of lava rock, the 

 channel being in a solid formation of 

 lava and only 570 feet in width. At 

 low stage the river is from one to two 

 feet in depth over about 400 feet of its 

 bed, most of the water flowing at that 

 time in a channel about 75 feet wide 

 on top and 30 feet deep at the deepest 



