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<br />2343 <br /> <br />TABLE OF CONTENTS <br /> <br />Page <br /> <br />MAP NO. 1244-300-120 . <br /> <br />Frontispiece <br /> <br />INTRODUCTION, SUMMARY, AND CONCLUSIONS <br /> <br />1 <br /> <br />Purpose and Scope . . . . . . . <br />Authority for Investigation. . <br />Colorado River Salinity. . . . <br />Summary and Conclusions. . . . <br />Cooperation and Acknowledgments <br /> <br />1 <br />1 <br />2 <br />2 <br />4 <br /> <br />PROJECT SETTING . . . . . . <br /> <br />5 <br /> <br />Location . . . . . . . <br />Irrigation and Drainage <br />Geology. . . <br />Ground Water <br /> <br />5 <br />6 <br />8 <br />9 <br /> <br />11 <br /> <br />THE SALT PROBLEM. <br /> <br />Salt Discharge to the River <br />Factors Affecting Salt Discharge <br /> <br />11 <br />14 <br /> <br />Natural Vegetation. . . <br />Flushing of Ground Water <br />Leaching of New Lands <br /> <br />14 <br />17 <br />17 <br /> <br />Historic Salt Budget. . . . . <br />Reconciliation With ISSP Data <br />Future Salt Budget . . . . <br />Salinity Control Potential <br /> <br />19 <br />19 <br />20 <br />22 <br /> <br />23 <br /> <br />OTHER PROBLEMS AND NEEDS . . . <br /> <br />Agricultural Development . . . . <br />Water Supply Optimization. . . . <br /> <br />Conveyance System Efficiency <br />Onfarm Efficiency . . <br /> <br />23 <br />25 <br /> <br />Coordination of Development <br /> <br />25 <br />26 <br />27 <br />29 <br /> <br />DISCUSSION OF RESERVATION UNIT <br />LIST OF REFERENCES . . . . . . <br /> <br />32 <br /> <br />i <br />