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<br /> <br />aOn the basis of 900,000 ac ft S.R.P. surface water with 470 mg/l T.D.S. blended with 200,000 ac. ft. of C.A.P. water <br />which is increasing in salinity, and subsequent delivery of 100,000 ac. ft. of this blend to the R.W.C.D. to be further blended <br />with 50,000 ac ft of groundwater with an average salinity of 765 mg/l. <br /> <br />Table 6. Summaf'/l of yi61d IoBSes in the Roosevelt Water conservation District due to increasing saUnity of CAP <br /> water delivered directly into the RWCD s'llstem and irrigation method as compared with present water <br /> quaUt'll and best irrigation practices. <br /> T.D.S. of 50,000 ac. ft of CAP. Water, mg/l <br /> T.D.S. 775 900 1000 1100 1200 1300 1400 <br />Crop Irrigations of <br />Per Year R.W.C.D. T.D.s. oflOO,OOO ac ft ofC.A.P. - R.W.C.D. Blend, mg/l <br /> Water <br /> 620 672 713 747 780 813 847 880 <br />Alfalfa (Tons) 16 500 1400 1700 1800 1800 2000 2300 2500 <br />10,370 Ac. 22 500 1000 1100 1200 1500 1700 2000 <br /> 29 700 800 1000 1200 1500 1700 <br /> 35 100 300 400 700 1000 1200 <br />Grapefruit (Tons) 16 460 910 1170 1240 1320 1420 1650 2050 <br />1,390 Ac. 22 200 460 690 760 840 1020 1170 1420 <br /> 29 80 330 510 610 690 840 1020 1170 <br /> 35 130 250 330 380 510 690 840 <br /> Sprinkler 200 <br />Oranges and Tangerines 16 690 1380 1770 1880 2000 2150 2500 2765 <br />(Tons) 22 310 690 1040 1150 1270 1540 1770 2150 <br />3,190 Ac. 29 120 500 770 920 1040 1270 1540 1770 <br /> 35 190 380 500 580 770 1040 1270 <br /> Sprinkler 310 <br /> <br />The average salinity of project water is approxi. <br />mately 910 mg/l. With the introduction of CAP water <br />as stipulated above the blend would begin at 858 mg/l <br />and reach 1,098 mg/I with CAP water at 1,400 mg/l. <br /> <br />District (non.Indian) lands consist of approxi. <br />mately 16,450 acres well drained, 12,800 acres <br /> <br />moderately drained, and 20,750 acres poorly drained. <br />Crop losses due to salinity and irrigation method, <br />projected on the basis of 40,000 irrigated acres, are <br />summarized in Table 8. <br /> <br />The Indian lands consist of approximately 24,390 <br />acres well dramed, 12,170 acres moderately drained <br /> <br />7 <br />