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<br /> <br />united States. The concepts and rules of the prior <br /> <br />~ appropriation doctrine, in ~hich water quality is not <br />N <br />C) considered, ar~ major deterrents to the implementation of a <br />-.J <br />sound water management technology. A possible solution may <br /> <br />lie in the reinterpretation of the doctrine. <br /> <br />9. A piecemeal approach to the water quality degradation <br /> <br /> <br />problem caused by irrigation return flows will be <br /> <br /> <br />ineffective. Only a basin-~ide total control program will <br /> <br />produce acceptable and lasting results. <br /> <br />10. There is a need for additional documentation of <br />pollution caused by irrigated agriculture throughout the <br /> <br />nation. Records currently available too often involve only <br /> <br /> <br />those areas where salinity is already acute. Frequently, <br /> <br /> <br />the modifying or diluting effects of ample water supplies <br /> <br />mask continuing increaseS in. salinity. well-planned <br /> <br /> <br />monitoring and surveillance programs will direct immediate <br /> <br /> <br />attention to seemingly inconspicuous problem areas and allow <br /> <br />corrective measures to be applied. <br /> <br />11. The best available irrigation and drainage management <br /> <br />methods, aimed at assuring a minimum generation of wastes, <br /> <br />should be incorporated into the initial planning and <br />development of all future irrigation projects. <br /> <br />6 <br /> <br /> <br />. <br /> <br />. <br />