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<br />I' <br /> <br />'. <br /> <br />1 <br />2 <br /> <br />FOREWORD <br /> <br />II <br /> <br />3 Moapa Valley Subevaluation Unit, a portion of Virgin River Unit, is a drainage <br /> <br /> <br />4 to Colorado River. See cover. Moapa Valley Subevaluation Unit was identified <br /> <br /> <br />5 as a problem area where irrigation and erosion are diffuse sources of salinity. <br /> <br />6 During the study, alternative solutions were identified and estimates were made <br />7 of effects of the plans to reduce salt loading to Colorado River. <br /> <br />8 <br /> <br />9 An i nterdi sci pl i nary team prepared the report. The "USDA Study Pl an for <br />10 the Virgin River Unit", revised August 1978, and the Soil Conservation Service <br />11 (SCS) publication "Guide for Environmental Assessment", March 1977 along with <br />12 SCS environmental policy and 7 CFR-650 were references. Efforts for compliance <br /> <br />13 with the National Environmental Policy Act of 1969 are documented in the appendixes. <br /> <br />14 <br /> <br />15 Assistance from other Federal and State of Nevada agencies is appreciated. <br /> <br />16 The Nevada Department of Wildlife information, was used for biological assessment; <br /> <br />17 the United States Department of Interior (USDI), Bureau of Land Management (BLM) <br /> <br />- - <br />18 provided color aerial photography which facilitated identification of wetland <br /> <br />19 areas; published reports, stream gage data and other information of the United <br /> <br />20 States Department of Interior, Water and Power Resources Service (WPRS) and <br /> <br />21 the USDI Geological Survey were used. The Clark County Conservation District <br /> <br />22 onfarm irrigation inventories; and reports prepared for Clark County, Nevada, <br /> <br />23 for areawide water management planning were used extensively. <br /> <br />24 <br /> <br />25 <br /> <br />003115 <br /> <br />I <br />" <br />I' <br /> <br />i <br /> <br />, <br /> <br /> <br />Ii <br />