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<br />LIST OF TABLES (CONTINUED)
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<br />Table p....
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<br />3-104 Cropping and produetion pattern changes, Roosevelt Water Conservation District. . . . . . . . . . . . , , . , . , .189
<br />3-105 Ratio of amount of water used to land and profit all by level of TDS, Roosevelt Water
<br />Conservation District. .............".......".,.".",.,.,..............,.........."...... .190
<br />3-106 Total and per acre net profit by TDS level, Roosevelt Water Conservation Distriet ....,.",.",.... .190
<br />3.107 Summary statistics, Roosevelt.w ater Conservation District . , , , , . , . . . , . . . . . . . . . . . . . , , , . , , , , , . . . . , 190
<br />3-108 Water quality ofselected wella which serve the RooseveltIrrlgation District. . . . . . . . , . , , , . . , . , . . . . . .190
<br />3-109 Effects of Inereasing salinity of Central Arizona Project water when it is blended Into
<br />the Roosevelt Irrigation District water , "..",..,. "".,.".,.,."........,....,.,.,.,..,.,.... .190
<br />3-110 Number of acres available for single and double cropping by land class, Roosevelt
<br />Irrigation District ",..................,..,."..........."""".,................,.,...... .192
<br />3-111 Selected erops and double cropping possibilities, Roosevelt Irrigation District, . . . . . . . , , . . , , , , . , . . . . .192
<br />3.112 Yields of major erops In the RooseveltIrrlgation District ",.,."....,.....,......".,.,..,...... .192
<br />3-113 Effective values of soil saturation extract conduetivlties for levels of salinity to be
<br />expected In the blended waters of the Roosevelt Irrigation District as the
<br />salinity of Central Arizona Project water increases to 1400 mgjl. . , . , . , . . . , . . . . . . . . . . , . . , , . . . , . . . . .193
<br />3-114 Cropping and production pattern changes, RooseveltIrrlgation Dlstriet . , . . . . . . . . . . , . , , , , . . , . . . . . . .194
<br />3-115 Shadow priess of land by class and level of TDS, Roosevelt Irrigation District . , . , . . . . . . . . . . . , , . , . . . .195
<br />3-116 Ratio of amount of water used to land and profit all by level of TDS, Roosevelt Irrigation
<br />District..............,..,....,...""........................."."......"......",.,.... .195
<br />3.117 Total and per acre net profits by TDS level, Roosevelt Irrigation District, , , , . , , , . , . . . . , . . . . , , , , . . . .195
<br />3-118 Summary statistics, Roosevelt Irrigation District .................."""...,.........,."..... .195
<br />3-119 Groundwater quality, San Carlos Irrigation Projeet ..,.............,.."",...,.......".,..... .195'
<br />3-120 Effects of increasing salinity of Central Arizona Project water when it Is blended Into
<br />
<br />the San Carlos Projeet system .............................".",.........,.....",......,... .198
<br />3.121 Number of acres available for single and double eropplng by land class, San Carlos
<br />Project (Non-Indian). . . . . . . . . . , . ' , . . , , . , , , . . . . . . . . . . . . . , . . . . . . . . . . . . , , . . . . , , . . . . . . . . . . . . . . . . .198
<br />3-122 Seleeted crops and double cropping possibilities, San Carlos Project (Non.lndian). ,.,..........,..., .198
<br />3-123 Yields of major crops in the San Carlos Irrigation project (Non.lndian) ..",.."........"",...... .198
<br />3-124 Effectivevaluesofsoilsaturationextreeteonduetivities .,..................,.......".......,.. .200
<br />3-125 Cropping and production pattern changes. San Carlos Project (Non.lndian) ....,.........,..,.,.... ,201
<br />3-126 Ratio of amount of water used to land and profit all by level of TDS, San Carlos Project
<br />(Non.lndian).,..,..",.,......,.,.....,......,....,.,.,...."..........."."..,.......".. ,202
<br />3-127 Total and per acre net profit by TDS level, San Carlos Project (Non-Indian) ,...",........."",... .202
<br />3-128 Summary statistics, San Carlos Project (Non-Indian) .",....."....,.."....,.......,.""..... ,202
<br />3-129 Number of acres available for single and double eropplng by land class, San Carlos
<br />Project (Indian) ,. , ., ,. . , . .. .. .. .. .. .. ,. ,. .. ., . ," . ." , , . .,. . .. .. .. ,.. , ,. , ", ,. ,. .. .. . .. " .. .202
<br />3-130 Selected crops and double cropping possibilities, San Carlos Project (lndian) . , . . , . . , , . , . . . . . . . . , . . . .202
<br />3-131 Yields of major crops in the San Carlos Irrigation Project (lndlan) ,.,.........,..,.",.,......".. .202
<br />3-132 Cropping and production pattern changes. San Carlos Project (Indian) .........,.".,.........",. .204
<br />3-133 Shadow prices of land by class and levelof TDS, San Carlos Project (Indian) ....,..".,.,......",..205
<br />3.134 Ratio of amount of water used to land and profit all by level of TDS. San Carlos Project
<br />(Indian)...,.,...,....,...."........"",...,.....,..."".............,..."..,.....,.." .205
<br />3-135 Total and per aere net profit by TDS level, San Carlos Project (Indian) ........,..,..,.........,....205
<br />3-136 Summary statistics, San Carlos Project (Indian) . . . . ' , , . , . . . . . . , . . , . . . . . . . . . . . . , . . . . . . . . . . , . , . , . .205
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<br />4.1 Surveys obtained. .. .. ., . ... ,. ,. .. .. ,. .. , , ., .. ., .. .... .. ,. " .. .. ,. .... .. , ""....,.,.. ,... . .209
<br />4-2 Test for signlfieantly different sample means. ...........,.,.............,.",......",.,....." ,261
<br />4-3 Regression estimates for length ofaverage lifetime and salinity ........",.."....,.,........."..262
<br />4-4 Estimated equations of the Tihansky and Orange County Studies, , , . . . . . . . . . . . . . . , . , . . . . , . , . . . . . . ,262
<br />4-5 Household total damage: Present value 1975 . . . . . . . . . , , . . , . . , . . . . . . . . . . , . . . . , . . . . . , , . . . . . . , , , , . .264
<br />4-6 Household marginal damages: Present value 1975 . , . . . . . . . , . , . . , , , , . . . . . . . , . . , . , . . . . . . , , . , . . . . , ,264
<br />5-1 Irrigation and soil moisture relationsblps for seleeted erops, a normal growing season,
<br />and traditional irrigation practices In the Grand Valley. . . . , . , , . . . , . . . . . . , . . , . , . . . . , . , , . . . . . . , , . , .284
<br />5-2 Water budget summary for traditional irrigation practices in the Grand Valley: Annual
<br />water use and losses for selected crops ......".,...,...",.,.....,.,.,........,.,..",....".. .284
<br />5-3 Priee and yield assumptions used in estimating Grand Valley erop produetion costs and
<br />returns,.. .. .. .. ,. ., ..... ....." ,. ., .. ,...,. ..,. .. .". .. .. .. .",... .. ..,. ,... ."...., ... .. .286
<br />5-4 Assumptions used in estimating the additional labor costs to farmers for reducing deep
<br />pereolationlosses .,............,........,.,....,...,..,.,....,.,...........,....,..."..... ,287
<br />5-5 L,P. tableau for crop production model representing Grand Valley. Colorado, .. ,.",..,.,...."...,289
<br />5-6 Consequenees of implementing on.farm nonstructural salinity controls in the Grand
<br />Valley: seleetedsummary.....................",......",........""......,....",..."....290
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