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<br />~ 14) There is a clear need to involve irrigators in all <br />o phases of salinity related improvements. Where irri- <br />~ gators participated in design decisions, the systems <br />,,~ were not always the most efficient, but were certainly <br />the most workable and flexible from the standpoint of <br />the water users. Participation in the actual construc- <br />tion provided operational insight, understanding of <br />neighbor needs, a pride in workmanship, and more rapid <br />completion of the work than by contractual methods. <br /> <br />l5) Proper water management requires a strong emphasis toward <br />on-farm water control structures, especially flow meas- <br />urement devices, This project utilized standardized <br />means for determining water flow rates. All flow <br />measurement devices were designed or selected to be <br />read directly by the farmers without the use of printed <br />tables. <br /> <br />16) In investigating the advantages and disadvantages of <br />influent control versus effluent control for a National <br />Pollutant Discharge Elimination System type program in <br />Grand Valley, it became readily evident that influent <br />controls offered the greatest advantage in terms of the <br />reduced number of control points, better monitoring <br />capabilities, and most importantly, being able to <br />al1eviate the problem at its source rather than treating <br />the symptoms. <br /> <br />17) The success of an influent approach is dependent 'upon: <br />(a) use of numerous flow measuring devices; (b) adegqate <br />technical assistance for working with and advising , <br />farmers on improved irrigation practices and methods; <br />and (c) availability of funds for making the necessary <br />structural improvements. <br /> <br />la) Successful implementation requires large-scale extension <br />type programs to provide necessary technical assistance <br />and a strong interaction with farmers. <br /> <br />19) A large amount of technical assistance is required in <br />working with farmers in designing on-farm improvements <br />that suit their individual needs, to negotiate the <br />financial terms, construction of the improvements, and <br />assisting the irrigator in the proper management of his <br />new system. <br /> <br />16 <br /> <br />