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<br />to") <br />l- <br />e> <br />..... <br /> <br />TABLE 3 -- Drain. Salinity Data by Irrigation District, <br />San Juan Salinity Control Study, Navajo Nation Unit <br /> <br />.:fJ!jt~ <br /> <br />Canal <br /> <br />Representative Drain Estimated Weighted <br />Drain EC Acres EC <br />45-3 2.0 210 2'.7 <br />45-7 4.8 1,160 on <br /> 1.0 840 3,330 <br />45-12, 13, 13A 2.0 1,120 acres <br />5S-3, 5, 6 3.2 1,560 2.3 <br />55-7, 25 1.9 585 on <br />5S-10-12, 21-24 1.2 1,510 4,530 <br />55-14, 15 3.0 875 acres <br />5S-31, 31a 1.2 540 1. 2 on <br /> 540 acres <br /> <br />Fruitland <br />3,330 acres <br /> <br />Hogback <br />4,530 acres <br /> <br />Cudei <br />540 acres <br /> <br />Weighted EC for all drains 2.4 on <br />8,400 acres <br /> <br />TABLE 4 -- Water and Salt Balance, Present Conditions and Future Without Project, <br /> San Juan Salinity Control Study, Navajo Nation Unit (5,800 acres) <br /> ------WATER------ -----------SALT----------~t3 <br /> --AF/A-- --AF/yr- --EC-- --T/AF-- -T/yr-- <br />DIVERSION 10.7 62,100 0.52 0.45 27,900 <br />RETURN TO RIVER (Off-farm) <br />Canal Seepage(14%) 1.5 8,700 2.40 2.10 18,300 <br />FARM DELIVERY 9.2 53,400 0.52 <br />RETURN TO RIVER (Onfarm) <br />Ditch Seepage 0.8 4,600 2.40 2.10 9,600 <br />FIELD DELIVERY 8.4 48,800 0.52 <br />VEGETATION USE <br />Crop Consumptive Use 2.5 14,500 <br />Phreatophyte Use(10%) 0.6 3,500 <br />RETURN TO RIVER (Onfarm) <br />Surface 1.7 9,900 0.52 0.45 4,500 <br />Deep Percolation 3.6 20,900 2.40 2.10 43,900 <br />RETURN SUMMARY <br />Canal Seepage 1.5 8,700 2.40 2.10 18,300 <br />Ditch Seepage 0.8 4,600 2.40 2.10 9,600 <br />Surface 1.7 9,900 0.52 0.45 4,500 <br />Deep Percolation l....2 20.900 2.40 .z...J.Q 43.900 <br /> TOTAL RETURN 7.6. 44,100 1. 73 76,300 <br /> <br />OFF-FARM SALT PICK UP (Canal) <br />ONFARM SALT PICK UP <br />TOTAL SYSTEM SALT PICK UP (Returns less Diversion) <br /> <br />14,400 TONS (2.5 T/A) <br />34,000 TONS (5.8 T/A) <br />48,400 TONS (8.3.T/A) <br /> <br />'~~F~~ <br /> <br />12 <br />