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<br />Valley Irrigation District, the Government turned the operation and <br />maintenance of the system over to the water users and this area was <br /> <br /> <br />eliminated from the Yuma Project. <br /> <br /> <br />In March 1910, 6,975 acres of the Reservation Division were <br /> <br /> <br />opened to homesteading and were subsequently called the Bard <br /> <br /> <br />District. Irrigation service commenced with the completion of <br /> <br /> <br />Laguna Dam and the Yuma Main Canal. After completion of the Colorado <br /> <br /> <br />River siphon in 1912, irrigation service in the Valley Division was <br /> <br /> <br />provided through the Yuma Main Canal also. Laguna Dam was the point <br /> <br /> <br />of river diversion for the Yuma Project until the completion of <br /> <br /> <br />Imperial Dam in 1938. Shortly thereafter, deliveries to the Yuma <br /> <br /> <br />Main Canal and the Reservation Division laterals were made through <br /> <br /> <br />the All-American Canal. <br /> <br /> <br />The need for project drainage was evident from the beginning. <br /> <br /> <br />The Reservation main drain was constructed in 1912. Drainage <br /> <br /> <br />surveys were started in the Valley Division in 1915. In 1917 the <br /> <br /> <br />pumping of drainage water into the Colorado River was cOImDenced. <br /> <br /> <br />In 1924 the discharge of drainage water through the Boundary <br /> <br /> <br />Pumping Plant across the Sonora land boundary to Mexico was <br /> <br /> <br />cCllIlnenced. <br /> <br /> <br />The Valley Division has an irrigable area of 51,936 acres, of <br /> <br /> <br />which 45,149 acres was irrigated in 1961. The water supply included <br /> <br /> <br />353,120 acre-feet of Colorado River water and 16,728 acre-feet from <br /> <br /> <br />drainage recovery. <br /> <br /> <br />Of the 14,260 irrigable acres in the Reservation Division, <br />10,960 acres were irrigated in 1')61. <br /> <br />~' <br /> <br />8 <br />