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,.. -"~_11 V.....'6PERATlON AND MAINTENANCE 23 leakage was considerably reduced on account of the relatively high minimum water temperature of 480, the lack of periods of rapid temperature change, and more importantly to the repair work in previous years to seal off contraction cracks, A maximum leakage of two to three gallons per minute at Freda siphon was reported in February 1952. Water was delivered through a connection to a siphon blowoff at mile 27 on the main aqueduct, to the State of California for use at the quarantine station at Vidal Junction. Water was also sup- plied for a short time to the U. S, Army for survey work in the vicinity of Rice, California. In the San Jacinto Valley a temporary connection was made to the main aqueduct near Lakeview for service to the Eastern Munici- pal Water District. The first delivery through this connection was made to the Brownlands area in June 1952. On July 28, 1951 a cloudburst occurred along a portion of the aqueduct centering in the 20-mile section of the Little San Bernar- dino Mountains between Fan Hill and Big Morongo Canyon. No measurements of the intensity of the storm were obtained, but in Palm Springs, 14 miles southwest of the center of the affected por- tion, newspapers reported a 3-inch rainfall in a 30-minute period, The storm did considerable damage to roads and to the District telephone line, but only minor damage to aqueduct structures crossed by the canyon floods, estimated as high as 20,000 cubic feet per second in Wide Canyon. In August further thunder storms covered the desert areas, with the heaviest rainfall and runoff near the Colorado River, 3.98 inches being recorded at Gene for the month, over 3 inches falling in one day. Roads were damaged and repairs ___were Jlecessary_uLtha vicinity- of-Gene,-alollj!;-the river,and-north- of Iron Mountain along the transmission line to Boulder City. I I I I ~ I , ,