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<br />Number <br />1 The Colorado River Basin . . . <br /> <br />$""." <br /> <br />(D <br />':J'J <br /> <br />~ <br />i~-:;" <br /> <br />9 <br />10 <br /> <br />11 <br /> <br />l2 <br /> <br />13 <br /> <br />14 <br /> <br />15 <br /> <br />LIST OF FIGURES <br /> <br />. . . . <br /> <br />. . . . <br /> <br />. . . <br /> <br />2 <br /> <br />Relative magnitude and sources of salt in the <br />Colorado River Basin ....... <br /> <br />. . . . <br /> <br />3 <br /> <br />Location of Grand Valley Salinity Control <br />Demonstration Project . . . . . . . . . <br /> <br />. . . . . <br /> <br />4 <br /> <br />Grand Valley Salinity Control Demonstration Project <br />Area. . . . . . . . . . . . . . . . . . . . . . . <br /> <br />5 <br /> <br />Location of the nine selected lateral subsystems <br />incorporated in the project . . . . . . . . <br /> <br />Normal precipitation and temperature at Grand <br />Junction, Colorado . . . . . . . . . . . . . <br /> <br />6 <br /> <br />7 <br /> <br />General geologic cross-section of the Grand Valley <br /> <br />Photograph of crystaline salt lenses in Mancos <br />Shale in the irrigation area of the Grand Valley <br /> <br />Soils map of irrigated lands in Grand Valley . . . <br /> <br />8 <br /> <br />Approximate areal extent of cobble aquifer in the <br />Grand Valley . . . . . . . . . . . . . . . . . . <br /> <br />Frequency distribution of Grand Valley farm sizes <br /> <br />Frequency distribution of agricultural field sizes <br />in the Grand Valley ..... . . <br /> <br />Agricultural land use in the Grand Valley <br /> <br />Graphic representation of the magnitude and <br />distribution of water flows in the Grand <br />Valley for 1968 " . . . . . . . . <br /> <br />Grand Valley Canal Distribution System <br /> <br />viii <br /> <br /> <br />Page <br />2 <br /> <br /> <br />3 <br /> <br />7 <br /> <br />9 <br /> <br />lO <br /> <br />21 <br />23 <br /> <br />24 <br /> <br />25 <br /> <br />29 <br /> <br />31 <br /> <br />32 <br /> <br />33 <br /> <br />36 <br /> <br />38 <br />