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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 />3690 <br /> <br />LOWER VIRGIN RIVER UNIT - ARIZONA, NEVADA <br /> <br />This study encompasses southeast Nevada and northwest <br />Arizona and is located north of Lake Mead. The area includes <br />Littlefield Springs and the irrigated areas along the Virgin <br />River between the 'springs and Lake Mead. The salinity control <br />potential of this unit could be 80,000 tons per year. <br /> <br />Currently, a salt balance study in the groundwater in the <br />area is being conducted by the Desert Research Institute. Data <br />collected so far would not warrant a water quality improvement <br />project. However, if the salt balance study proves otherwise, <br />a salinity control plan could include a groundwater barrier and <br />extraction wells and industrial use in a pipeline collector <br />system. <br /> <br />The Bureau of Reclamation's (easib~lity study did not <br />identify a source of saline water fefh&:e treatment or removal from <br />the river system would be cost-effective. A concluding report is <br />being prepared on this investigation. <br /> <br />(updated 11/20/81) <br /> <br />DS:cs <br /> <br />-23- <br />