Identifier: irrigationinunit105mead (find matches)
Title: Irrigation in the United States : testimony of Elwood Mead, Irrigation Expert in Charge, before the United States Industrial Commission, June 11 and 12, 1901
Year: 1901 (1900s)
Authors: Mead, Elwood, 1858-1936 United States. Industrial Commission on Agriculture and Agricultural Labor United States. Office of Experiment Stations
Subjects: Irrigation United States
Publisher: Washington : U.S. G.P.O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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intransit through the lateral had been determined. As it is. this shows a loss ofover 25 per cent. The construction of the Gage Canal is such as to make losses through seepagepractically nothing, owing to the canal being cemented. The loss from evapora-tion is also small, because the canal is deep and narrow and has throughout itslength a uniform cross section, with no pools of still water on the upper side. Ascompared to losses varying from 25 to 75 per cent shown in other canals, the lossol only 6 per ceiit in this canal has great significance. The water turned into thehead would have served to cover the land irrigated to a depth of 2.21 feet, whilethe mean depth for the water delivered to irrigators laterals was 2.11 feet, a lossof only 0.13 of an acre-foot per acre irrigated. Canals can only be cemented onearth, as is done in California, in localities where frosts in winter are not severe. U. S. Dept. of Agr.; Bui. 105, Office of Expt. Stations. Irrigation Investigations. Plate V.
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Fig. 2.—Iron Flume across Malad River, Bear River Canal. 19 There are other remedial measures which can be employed in other sections whichwill, no doubt, be largely adopted when the extent of the loss from this source ismore generally realized. Dumping clay into the canal and causing it to be dis-tributed by agitating the water has been tried with good results on some Nebraskadjtches. The report of the careful and interesting investigations of Professor Fortier atthe Montana Agricultural Experiment Station shows that in the Middle CreekCanal nearly 22 per cent of the total flow was lost in seepage in the first 4 miles,while the probable loss in the entire canal was 35 per cent. The conclusions ofProfessor Fortier are in accord with those of other observers as to both the evilsresulting from this loss and the methods by which it may be reduced. The water taken into Logan and Richmond Canal would cover the entire areait irrigates to a depth of 3.59 feet. The water actuall)7 used on t

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