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. ~1.0- evaporation~ Of course, this must be in line with practical construction costs. This is especially true on the smaller structures providing for stock water and flood control. Reduction of seepage losses in both storage and transportation facilities plays an important part in plans for future good water management. Designs and specifications should be prepared to keep such losses at a minimum consistent with eConomic construction costs. In this connection, however, it must be remembered that the achievement of a minimum in seepage 10$s will in some instances ch'ange the. rate of return. flow to the river. i As these plans develop, consideration must be given to the adjustment which will 'havs to be made for those water rights'which have been largely dependent upon such return flow. Another problem which is assuming greater importance is the control . ','.. . . ofphreatophytes.' To those whose primary interest is the preservation and encouragement of wildlife, this is' an alarming subject. They do agree, however, that many water-consuming plants have little value as cover for wildlife. Surveys should be made and plans prepared for the elimination of such species along streams, canals and reservoirs. Future planning for water management must establish a sound basis of understanding between the sportsmen's groups and the water users so that a practical balance is achieved. Appraisal of the future water needs of the Basin would be incomplete if' no consideration was given to the improvement of methods of irrigating the present 1,220,000 irrigated acres. There should be planning for the rehabilitation and/or modernization of the storage and distribution systems. Consideration should be given to the possible consolidation of some existing systems to reduce duplication and provide foX' greater and more efficient