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<br />. <br /> <br />Table 1. summary of siginificant Physical Effects of Alternatives <br />Moapa Valley Unit, Nevada <br /> <br />ITEM <br /> <br />UNIT <br /> <br />Present <br />Condition <br /> <br />ALTERNATIVES <br />No Action <br /> <br />Recommended <br />Plan <br /> <br />PHYSICAL EFFECTS <br /> <br />Total Irrigated Area <br /> <br />acre <br /> <br />4,865 <br /> <br />4,565 <br /> <br />4,565 <br /> <br />Irrigated Improvements <br /> <br />acre <br /> <br />3,000 <br /> <br />Annual surface Water to Lake Mead <br /> <br />ac-ft <br /> <br />6,100 <br /> <br />6,400 <br /> <br />11,900 <br /> <br />Annual Ground Water to Lake Mead <br /> <br />ac-ft <br /> <br />5,600 <br /> <br />6,300 <br /> <br />1,600 <br /> <br />Total Annual Water to Lake Mead <br /> <br />ac-ft <br /> <br />11,700 <br /> <br />12,700 <br /> <br />13,500 <br /> <br />Salt Load to Lake Mead <br /> <br />tons/yr <br /> <br />56,500 <br /> <br />62,600 <br /> <br />43,900 <br /> <br />1/ <br /> <br />Change in Salt Concentration <br /> <br />mg/l <br /> <br />-1.9 <br /> <br />Natural Wetland Habitat <br />1/ <br />Artificial wetland Habitat <br /> <br />acre <br /> <br />1,189 <br /> <br />1,189 <br /> <br />1,189 <br />~/ <br />2,563 <br /> <br />acre <br /> <br />2,868 <br /> <br />2,821 <br /> <br />Upland Habitat <br /> <br />acre <br /> <br />2,200 <br /> <br />2,200 <br /> <br />2,170 <br /> <br />1/ Change from the No Action condition in the Colorado River at Imperial Dam, <br />near Yuma, Arizona <br /> <br />1/ Wetlands entirely dependent on irrigation losses. <br /> <br />~/ Assumes worst case scenario of all impacted acres completely lost <br />with no replacement. <br /> <br />003134 <br /> <br />~.,., <br />..-, '.- <br />. . ";~,,: <br /> <br />v <br />