OCR Text |
Show . 3.2 2 If to meet tho needs of tho ranchers, water was allowed to flow during the winter months. r/inter water:- Sunning winter water has been a source of damage to canals, structures a/d lands of the Project and of loss to ths water-users. The lessees deruaid water at all times for stock, S3 they have no ponds or oiaterns, and setae would have to go from four to six miles for water. To satisfy this demand, it has been customary to allow water in some of the canals during tho winter. The region traversed by the Indian canals, has a fall of froa fifty to 100 feet to the mils, with the result that they either have a steep grade and £]£»« with high velocities over a hird sub-soil which occurs in seme sections, or where this hard stratum ia absent, they have their velocities checked with innumerable drops. Bin tor water can be run in a flat canal with strictures by first filling tho oanal and allowing tho water to freeze, and then lowering the water, the ice in of foot forming a roof ever the water to prevent furthor freeaing. T£. be successful the oanal should be fenced to prevent stock or vehicles from breaking tha ice. V.hen structures occur however, the Ice frooaes around tho stricture, forming a dam that may cause considerable damage. In canals having a high velocity i iy> ___ f.*> -«' |