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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />direction and the spillway is located on the east abutment. <br />The spillway is a channel constructed in natural ground and <br />its bottom is on bedrock. It is approximately 15 feet wide. <br />The spillway invert is 3.5 feet below the crest of the dam. <br />The outlet works consists of a 12 inch steel pipe extending <br />through the embankment, with a slide gate on the upper end. <br />There is also a second unused outlet approximately 40 feet to <br />the east. This outlet apparently discharged to an old canal <br />which circled around Rapid Creek #1. <br /> <br />The approximate storage capacities and surface areas and <br />heights of the two reservoirs are shown on the following <br />table. <br /> <br />Rapid Crk. Surface Embankment Vertical <br />Reservoir CaDacitv ~ Heiqht ill Heiqht <br />#1 603 AF 106 A 19 Ft. 14 Ft. <br />#2 442 AF 84 A 16.5 Ft. 13 Ft. <br />(1 ) From pipe outlet invert to crest. <br />(2 ) From pipe outlet invert to spi 11 way invert. <br /> <br />In preparing this report, information on dimensions and <br />capacity of the two reservoirs was taken from I" = 100' <br />topographic maps, which were prepared in 1989. Much of the <br />dimensional data from the maps differs from that shown on the <br />state Dam Inspection reports. Table I-I shows comparative <br />dimensions between map data and inspection reports. It is <br />assumed that much of the dimensional data in the inspection <br />reports may have been taken from historical data, which may <br />not always be correct, or which may have changed over the <br />years. Therefore, the dimensions taken from the topographic <br />maps are used in this report. These are also somewhat <br />approximate; specific on-site surveys will be done during the <br />final design phase. <br /> <br />3 <br />