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<br />....VUd <br /> <br />New Storage Facil- <br />ities, On-Channel <br />(Alternative IV-A) <br /> <br />For Ihis preliminary investigation. <br />reservoirs located on East Bijou, <br />West Bijou. and Muddy Creeks were <br />considered to demonstrate water re- <br />Sources development on plains trib- <br />utaries. <br /> <br />Supply <br /> <br />The design project produces 830 acre- <br />feet of direct irrigation water deliv- <br />eries upstream from Sterling, The <br />return flows from the use of this <br />waler and from the 1 ,670 acre-feet of <br />conveyance losses would make a <br />total of 1,300 additional acre-feet of <br />irrigation water available below the <br />design project. <br /> <br />Costs <br /> <br />The 1980 cost estimate for construc- <br />tion of the design project is $16 <br />million. The interest cost during <br />construction would be $6.6 million. <br />The annual cosls for operation, main- <br />tenance, and replacement would be <br />$97.000. <br /> <br />Impacts <br /> <br />The investment required would total <br />nearly $23 million in construction <br />costs and interesl during construc- <br />tion. The net economic benefit would <br />be -$11 million, <br /> <br />The estimated impact on water qual- <br />ity would represent a small positive <br />change from existing conditions. The <br />estimated impact on fish and wildlife <br />would represent a small positive <br />change from existing conditions. <br /> <br />11 <br />