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<br />Cl <br />C"j <br />"..'J <br />...-j <br /> <br />C.~l <br /> <br />., <br />') <br /> <br />page 4 <br /> <br />,.,) <br /> <br />Detailed field observations and measurements were made to <br /> <br />evaluate the effectiveness of lining in preventing seepage <br /> <br />and the reduction in salinitY.to the Colorado River. <br /> <br />Resul ts <br /> <br />The lining of main canals (7~ miles) in the principal <br /> <br />demonstration area is shown in the following drawing. In <br /> <br /> <br />addition, a number of laterals (5 miles) were lined. The <br /> <br />final report, "EvalJ,1ation of Canal Lining for Salinity <br /> <br />Control in Grand Valley" should be issued by the Government <br /> <br />Printing Office in November 1972. <br /> <br />. <br /> <br />. <br /> <br />. <br />