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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />o <br />~ <br />.... <br />00 <br /> <br />Figure <br /> <br />1 <br /> <br />2 <br /> <br />3 <br /> <br />4 <br /> <br />5 <br /> <br />6 <br /> <br />7 <br /> <br />8 <br /> <br />9 <br /> <br />10 <br /> <br />11 <br /> <br />12 <br /> <br />13 <br /> <br />14 <br /> <br />15 <br /> <br />16 <br /> <br />LIST OF FICURES <br /> <br />. <br /> <br />Colorado River Basin . . <br /> <br />The upper Colorado River Basin <br /> <br />Schematic geologic cross-section through <br />the Upper Colorado River Basin . . . . . <br /> <br />Areal extent of the primary sedimentary <br />marine shales and sandstone in the Upper <br />Colorado River Basin . . . . . . . . . <br /> <br />Surface water salinity concentrations <br />in the Upper Colorado River Basin ., <br /> <br />Isoheytal map of average annual precipi- <br />tation in the Upper Colorado River Basin <br /> <br />Map of average stream volume and total <br />dissolved solids concentration of the <br />Colorado River at Lee's Ferry, Arizona <br /> <br />Areas of irrigation development in the <br />Upper Colorado River Basin . . . . <br /> <br />Coal deposits in the Upper Colorado <br />River Basin . .. ...... <br /> <br />oil shale deposits in the Upper <br />Colorado River Basin . . . . . . <br /> <br />. . <br /> <br />Known major uranium deposits in the <br />upper Colorado River Basin. ... <br /> <br />Significant tar sands deposits in the <br />Upper Colorado River Basin . . . . . <br /> <br />Salinity control projects designated <br />by PI. 93-320 .. ....... <br /> <br />Salinity increase at Imperial Dam <br />projected by the Water and Power <br />Resources Service ....... <br /> <br />Schematic diagram of the multilevel <br />optimization analysis .... <br /> <br />Schematic representation of the <br />simplified optimization procedure <br />for each alternative or area . . . <br /> <br />ix <br /> <br />Page <br /> <br />2 <br /> <br />15 <br /> <br />16 <br /> <br />18 <br /> <br />21 <br /> <br />23 <br /> <br />24 <br /> <br />33 <br /> <br />34 <br /> <br />35 <br /> <br />36 <br /> <br />37 <br /> <br />48 <br /> <br />50 <br /> <br />54 <br /> <br />60 <br />