| OCR Text |
Show 113 Tho average oost for maintenance and operation i3 now approximately ^1,00 per acre. However, each ditoh is assessed separately 33 the charges vary from 35^ to $1.60 per acre p$e year, defending on the amount of work necessary on oaoh system, ^las engineering department collects maintenance from white 0?nar3 only as tha lands leased and owned by Indians are charged through the Agency Office and paid for from rentals, or front reimbursable Indiaa tribal funds. :LUUf?_iABca. Design:- In designing an irrigation system, tho engineer -usually selects a point of diversion well above the land to be irrigated at 3cae favored locality ^hera local conditions promise a reasonable protection against high watar. '..here tho land to be irrigated occupies a valley, the river debouching froa a canyon at its upper end, it i3ooasidered g>c& practice to locate tho intake as close to the mouth of the canyon as practicable, and to have one oanal serve all the land on that particular side of the river. This serves to eliminate the largo seepage and evaporation loases that always occur In the bod of a stream, and by keeping the water In one boc^y, also diminishes such losses in the canals. Owing to tha location of the various tract s of Indian land ,thi 3 plan 118 |
