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<br /> <br />t.L) <br />~ <br />CD <br />CD <br /> <br />FSl9!!l <br /> <br />11. Salt buildup in soil results in extensive damage in <br />this flax field as shown by the bare areas. Imperial <br />County, California. <br /> <br />31 <br /> <br />12. Aerial view of irrigated farmland southwest of Roll, <br />Arizona. Standing salty water and saline soils <br />resulted in a less of approximately 1000 acres of <br />crops. <br /> <br />32 <br /> <br />13. Here high water table prevents removal of surface water <br />after irrigation,. resulting in Fonding.of water and <br />drowning of crot:. Imperial Valley, 'california. <br /> <br />14. Tile, gravel and sights placed ahead of construction on <br />an irrigated farm in the Imperial Valley, California. <br />The tiling operation is engineered and constructed by <br />the Imperial Irrigation District Engineering <br />Department. 53 <br /> <br />51 <br /> <br />15. Typical discharge of tile drain designed to lower the <br />water table beneath irrigated land. Tile drainage <br />commonly discharges into open collection ditches for <br />ultimate disposal -- in this instance into the Salton <br />Sea. Imperial Valley, California. 54 <br /> <br />16. Grove of heavy-laden date palms near Indio, California <br />in the Coachella Valley. The Valley is one of a few <br />areas in the United states where the date palm thrives. 57 <br /> <br />17. Seeding of pre sprouted rice using aircraft. 70 <br /> <br />18. Application of pesticide by aerial crop spraying. 71 <br /> <br />19. Earthen water conveyance ditch .being lined by spraying <br />or "shooting" with concrete. No reinforcement is used <br />in this method. pinal County, .Arizona. <br /> <br />84 <br /> <br />20. pouring concrete ditch with size 12 wire mesh being <br />placed in the concrete. This ditch is 34 inches deep <br />with 1 to 1 side slopes. Pueblo county, colorado. <br /> <br />85 <br /> <br />21. <br /> <br />The Delta B Canal, a large conveyance <br />Delta. Utah being lined with plastic. <br />plastic strips are being used to line <br /> <br />channel near <br />Two 32 foot <br />the canal. <br /> <br />86 <br /> <br />vi <br /> <br />. <br /> <br /> <br />. <br /> <br />. <br />