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<br />I <br />I <br />I <br />I <br /> <br />TABLE OF CONTENTS <br /> <br />PREFACE <br />ACKNOWLEDGMENT <br />TABLE OF CONTENTS <br />LIST OF FIGURES <br />LIST OF TABLES <br />INTRODUCTION . <br />STUDY AREA DESCRIPTION <br />Geology. . <br />Soils <br />Land Use <br />Climate. <br />Irrigation. <br />PROJECT INVESTIGATIONS. <br />Instrumentation . <br />Piezometers <br />Two-inch wells <br />Flow measuring flumes. <br />Current meter ratings. <br />Canal Seepage Study. <br />Canal operation. <br />seepage measurement <br />Summary of earlier investigations. <br />Construction recommendations <br />Lateral Seepage Study . <br />Lateral description <br />Lateral operation . <br />Seepage measurement <br />Results and conclusions <br />Land Use Study <br />Area I land use. <br />Grand Va11ey land use. <br />Farm Efficiency Studies <br />Drainage Evaluation. <br />Subsurface Investigation <br />Piezometer data. <br />Drilling . <br />Electrical restivity measurements. <br />Soil sampling <br />Water Quality. <br />Canal diversions <br />Drainage discharges <br />Soil profile. <br />HYDRO-SALINITY MODEL <br />Model Operation . <br />Main Program . <br />Subroutine WATER. <br />Inflows <br /> <br />v <br /> <br />Page <br /> <br />ii <br />iv <br />v <br />viii <br />x <br />1 <br />10 <br />10 <br />13 <br />16 <br />20 <br />23 <br />24 <br />24 <br />26 <br />28 <br />29 <br />31 <br />31 <br />32 <br />33 <br />36 <br />36 <br />37 <br />41 <br />45 <br />46 <br />47 <br />49 <br />49 <br />49 <br />51 <br />55 <br />59 <br />59 <br />61 <br />61 <br />62 <br />62 <br />64 <br />64 <br />66 <br />67 <br />67 <br />69 <br />71 <br />73 <br /> <br />003145 <br />