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<br /> Table
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<br />Figure
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<br />TABLES
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<br />Comparison of river basin drainage and runoff .................""... 7
<br />Water use in the Colorado River Basin (\981-85) ."".......",....... 11
<br />Reclamation ceiling allocation . . . . . , , , , . . . . . , . , , . . . . , , , . . . . . . . . . . . 50
<br />Salinity control unit ceiling allocations by year ,.,......,.,.,.......... 51
<br />Cost-effectiveness summary (Reclamation) ...."......",......,.,... 55
<br />Cost-effectiveness summary (USDA) .............",.....".,.,.,.. 56
<br />Effectiveness summary (BLM) . . . , , . . . . , . , . . . . . . , , , . . . . . , , , . , . . . . . 56
<br />Grand Valley Unit construction status (Reclamation) ....,.....""".... 63
<br />Land retirement cost effectiveness ,..,.,..,...",...""".,....... 63
<br />Land retirement costs and cost effectiveness ......,........"......." 65
<br />Comparison of salinity levels to the numeric criteria for the existing level
<br />of development and salinity control .',....,.,......",.,...,..,... 86
<br />Comparison of range of salinity conditions expected at present level of
<br />development and salinity control to observed (measured) salinity values . , . . . . 87
<br />
<br />FIGURES
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<br />Map of Colorado River System . . . , , , , . . . . . . , . . . . . . . , . . . . . . . . , , , , .
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<br />Sources of salinity ",....,......'"...."......"".......",.
<br />Schematic of agricultural salt pickup ,....,.",..""......,.,.,....
<br />Salinity costs by user group . . . , . , , . . . . , , , . . . . . , , . . . . . , . , . . . , . . . . .
<br />Salinity damages increase with salinity levels ......,...,.",......".,
<br />Map of salinity control units and study areas . , . , . , , , . . . , , . , , , . . , . . , . , .
<br />Schematic of Big Sandy River Unit ..'.......".....,.,.,.......",
<br />Schematic of Grand Valley ..,.....'...,.,.,.....".,...,.,....,.
<br />Schematic of Meeker Dome Unit . . , , , . , . . . , , . . . . . , . , . . . . , . , , , , , . . .
<br />Schematic of Paradox Valley Unit ......" . . . . . . . . , . . . . , , , , , . . . . . . .
<br />Natural flow and reservoir storage in the Colorado River .....,.,."......
<br />Reservoir effects on salinity at Glen Canyon Dam . . , , . . . . . . , . , , , , . . . . . ,
<br />Comparison of past and current depletion projections . . . . . . . . . . , . . , . . . . . .
<br />Salinity in Lake Powell (Wahweap station near dam) , , . . . , , . . , . . . , . . . . , ,
<br />Salinity and discharge at Imperial Dam (1941-1993) .",.",'......"".
<br />Normalized salinity at Imperial Dam "..,..,.,..",.......,.",....
<br />Natural variation in salinity at Imperial Dam , , . . . , , , , . . . , . , . , . , . , . , . . ,
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