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<br />1 <br /> <br />.' <br /> <br />short, <Jets it 111 tilt! I'lUpulLlon that his ilcrea']e in crop bears to the <br />total acreage in crop. So it was natural, and we found it in a number <br />of cases, that in giving his acreage a farmer wbuld be inclined to enlarge <br />it somewhat, hoping to get a little larger share of the water when it was <br />short. There were a number of shortages in Mexico. <br />"We believe that there has not been over 200,000 acres irrigated <br />in Mexico, up until just the very iast few years, when the acreage has <br />increased. <br />"The use of water by 1920 had reached about 600,000 acre-feet; <br />1920-30 was a fairly representative period ol what we consider maxi- <br />mum use. <br />"The CHAIRMAN. How much did they use in 1925? <br />"Mr. DOWD. In 1925 they used 729,000 acre-feet. <br />* * * <br /> <br />"As has been mentioned, for the period between 1921 and 1930, a <br />10-year period, use of water was approximately 600,000 acre-feet per <br />year. <br />"Senator McFARLAND. I wonder if I might ask where these records <br />were obtained. <br />"Mr. DOWD. They are our own district records taken from the <br />records of the subsidiary company in Mexico; the official records of <br />the district, in other words, and they represent the deliveries from our <br />canal system in Mexico, which I will describe. <br />* * * <br /> <br />"Senator MILLIKIN. How much water do you lose by seepage and <br />evaporation in delivering those net amounts? <br />"Mr. DOWD. I will give you that now. The losses from seepage <br />and evaporation in this canal system in Mexico were remarkably low <br />and would average some'Nhere around 5 to 7 percent a year; when you <br />were given figures of 200,000 to 250,000 acre-feet of losses to be <br />added-to-the-I-92-9-oHer--of-7-50,OOO-acre--f eet--;-th ey-are-in-error-:-It-i:; <br />only about 30 miles from the diversion point to what we call Cudahy <br />Check, and at that point 30 miles from the head about one-half of the <br />deliveries are made in Mexico. So that when you take the amounts <br />we give you as delivered from the canals in Mexico, half of them are <br />made from a 3D-mile canal, so you do not have the same situation as <br />if all the water had to be carried through the whole 130 miles. But our <br />seepage and evaporation losses show from 5 to 7 1/2 or 8 percent normally. <br />"Since the All-American Canal has been bull t and all the water for <br />Imperial Valley has been taken through the All-American Canal, and that <br />occurred in March 1942, the Mexican system has been going through a <br />transition period. <br />"At this time, of courst;), with the larger canal and the sma ller <br />amount of water, there is some additional loss; but for the year 1942 <br />the loss showed only 14 1/2 percent. Even these big canals, with <br /> <br />-39- <br />