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<br />Ii <br /> <br />. J- ...... . , <br />(., ...1,. l) <br />OPERATION AND MAINTENANCE <br /> <br />25 <br /> <br />patrolman-operator on the lower portion of the Orange County <br />pipe line. <br />In May and June of the previous fiscal year, 1942-43, Colorado <br />River water had been delivered in sufficient quantity to increase the <br />storage in Lake Mathews to approximately 85,000 acre feet and to <br />fill to capacity all storage for District camps and the Army at <br />points along the aqueduct. Following this pumping period and <br />until February 1944. the pumps were run only as necessary to <br />replenish supplies for District camps and the Army, thereby re- <br />leasing to war industries in the Southwest all possible District <br />power generated at Boulder. Between February 21 and March 24. <br />1944 a one-pump flow of 200 c.f.s was transported through the <br />aqueduct, to bring the storage in Lake Mathews up to approxi- <br />mately 83.300 acre feet. The Army closed its desert training cen- <br />ters in March and during the last quarte,' of the fiscal year very <br />little water was released from Copper Basin into the aqueduct <br />system. No water was pumped at Hayfield plant during the last <br />quarter. <br />During the pnmping period in February and March, six cracks <br />were disclosed in Freda siphon, a 12'4" diameter circular mono- <br />lithic reinforced concrete conduit about three miles long. Several <br />wet spots appeared also along Pinto siphon, a structure similar to <br />Freda siphon, but 12'9" in diameter and 3400 feet long. The water <br />temperature at the beginning of the pumping period was 520 F. <br />Upon completion of pumping. a careful inspection of these siphons <br />showed that leakage had been Ilegligible and that expansion due <br />to higher temperatures had practically sealed all cracks. <br /> <br />Delivery "flcatcr to the Arm!! <br /> <br />Natural Colorado River water has been delivered from the main <br />aqueduct to desert training centers of the l;nited States Army <br />since the first camp was established in lVlarch 1942. The avail- <br />ability of aquednct water made possible training in desert warfare <br />immediately after the United States entered the war. District <br />officials assured the Army that water would be furnished as it was <br />needed across the entire desert area traversed by the aqueduct. <br />The Army built Camp Young adjacent to the aqueduct, a short <br />distance west of Shav€}.'s Summit, and bElgan the lIse of water ill <br />April 1942. Storage was provided in Shaver siphon bJ' the use of <br />stop Jogs in the downstl-eam transitiun. As other camps were built, <br />water Wf,S supplied first to contractors for construction purposes <br />