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June 4,2009 <br /> Statement of Work <br /> WATER ACTIVITY NAME—San Antonio River—El Codo Ditch Diversion <br /> Rehabilitation <br /> GRANT RECIPIENT—El Codo Ditch Company <br /> FUNDING SOURCE—Rio Grande Basin <br /> INTRODUCTION AND BACKGROUND <br /> Provide a brief description of the project. (Please limit to no more than 200 words;this will be <br /> used to inform reviewers and the public about your proposal) <br /> The incorrect placement,rock-pile structure,and poor condition of the El Codo Ditch diversion <br /> on the San Antonio have caused problems for two generations,created difficulties in diverting <br /> water in a timely manner,and caused severe erosion and flooding. Costly almost daily <br /> maintenance strives to keep the waters of the San Antonio from overtopping the river bank and <br /> flooding the ECDC system and the town of San Antonio and surrounding communities. This <br /> two-phase Project began this spring using El Codo Ditch Company(ECDC) funds to complete <br /> Phase I,repairing the severe erosion just upriver from the diversion. The bank has now been <br /> stabilized with two J-hooks about 300'upstream of the diversion,containing the flows, <br /> redirecting them toward the center of the main channel,and stabilizing the area in preparation for <br /> Phase II. Funded by Rio Grande Roundtable WSRA funds,Phase II will cure the root cause of <br /> this long-standing problem this autumn,replacing the current rock-pile diversion with an NRCS- <br /> engineered concrete Core and directing flows more effectively toward the Ditch Head Gate and <br /> the Bypass Head Gate.A new gear/screw-controlled metal Bypass Head Gate will be installed, <br /> restoring optimal diversion effectiveness. <br /> OBJECTIVES <br /> This Project addresses multiple consumptive and non-consumptive needs of El Codo Ditch <br /> Company as well as those of all stakeholders on the San Antonio River. As listed below,this <br /> project helps to meet agricultural demands for sustainable water supply;promotes cost <br /> effectiveness and operational flexibility; optimizes existing and future water supplies;provides <br /> for enhanced riparian habitat;provides protection from flood; enhances aquifer recharge;helps to <br /> bring water supply and demand of the Rio Grande Basin into balance; keeps all possible water <br /> within the Basin; and supports the ability of Colorado to fulfill its commitments under the Rio <br /> Grande Compact. Rio Grande Basin objectives are accomplished by: <br /> Sustainably meeting agricultural demands <br /> Increasing the ability of ECDC to divert water rights in priority for 1,500 primary irrigated acres <br /> Providing environmental enhancements to fish habitat <br /> Improving riparian areas by reducing sediment load and woody debris <br /> Facilitating two-way passage of fish <br /> Reducing the very high likelihood of flood <br /> El Codo Ditch Company 1 Updated Statement of Work <br />