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<br />f,J <br /> <br />Riverside - The major portion of the Riverside irrigation system <br />(see Figure 10) is located along lower Virgin River about 12 miles <br />upstream of Lake Mead. The group consists of four operators. Total <br />agricultural area is 1,225 acres, but only 395 acres are being irrigated <br />at present. Irrigation is normally conducted during all months of <br />the year. <br /> <br />Three operators use the Riverside diversion structure on Virgin <br />River as a source for their irrigation water. This structure is located <br />approximately one and one-fourth miles upstream of the Riverside bridge <br />on State Route 170, and diverts water south of the river channel. <br />One operator pumps water from the river and irrigates north of the <br />channel. The lift is about ten feet. <br /> <br />The main ditch length of 9,240 feet is unlined. Water is available <br />twice weekly during the summer months only when sediment is flushed <br />from the upstream Mesquite Diversion structure. <br /> <br />Attempts to construct a permanent diversion structure acrosa the <br />river channel have met with failure, apparently due to the continuously <br />saturated condition of the base soil material at the site, and the <br />swift velocity of the river during floods. The earthen structure now <br />being used must be repaired or rebuilt after each minor flood flow. <br /> <br /> <br />t <br /> <br />LEGEND <br />~ I~igated Land <br /> <br />USDA-SCS <br /> <br />o '000 ZOllO 3OOD!WI <br />, <br /> <br />..." <br /> <br />Figure 10 <br />IRRIGATED LAND <br />RIVERSIDE AREA, NEVADA <br /> <br />'\ ",'" r "..... ~ <br />lj'"l....ti <br /> <br />19 <br /> <br />Virgin Valley Subevaluation Unit <br />Arizona. Nevada. Utah <br /> <br />of the Virgin River Unit <br /> <br />Colorado River Basin Salinity Control Program <br />