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<br />I\,) <br />1\) <br />(.:) <br />" <br /> <br />Figure 2 <br /> <br />Ave. Infiltr.1 <br />Rates (M&E) <br />(in/hr) <br /> <br />0.20 <br />0.44 <br />0.31 <br />0.21 <br />0.40 <br />0.26 <br /> <br />Soil Type <br /> <br />Sagers silty clay loam <br />Fruita clay loam <br />Genola ciay loam <br />Hanksville silty clay loam <br />Mesa clay loam <br />Ravola clay loam/fvsl <br /> <br />Planning2 <br />Ranges <br />(in/hr) <br /> <br />0.41 - 0.61 <br />0.89 - 1.33 <br />0.61 - 0.92 <br />0.41 - 0.62 <br />0.81 - 1.21 <br />0.51 - 0.77 <br /> <br />Soil Intake3 <br />Family <br />(in/hr) <br />0.3 - 0.4 <br />0.40 <br />0.40 <br />0.30 <br />0.40 <br />0.4 - 0.5 <br /> <br />1 Infiltration rates based on mean estimates with 95X confidence interval; wetted perimeter was not taken into <br />consideration. Estimates based on data collected from 1986 to 1990. <br />2 ~etted area taken into consideration <50 to 33 percent). <br />3 Soil intake famiLy based on the Old Soils Guide <br /> <br />Salt Budgets <br /> <br />Salt Contribution: The total amount of salt entering into the Colorado <br />River system from all the monitored sites is estimated to be 1,600 tons <br />for 1995 or about 6.3 tons of salt per acre. Salt factor per acre inch <br />of deep percolation was based on the hydrosalinity model developed for <br />the different canal systems . The average deep percolation for,the <br />Grand Valley in 1994 (18.8 acre inches per acre) multiplied by the <br />valley wide weighted salt factor per acre inch (0.337 tons per ac inCh) <br />gives salt load per acre (18.6 x 0.337 = 6.3 tons). The salt load per <br />acre (6.3 tons) multiplied by the total acreage monitored (252 acres) <br />gives the total salt contribution (1598 tons) to the Colorado System <br />from all the sites. <br /> <br />Reduction in Deep Percolation and seepage: Deep percolation and seepage <br />could be reduced substantially ,with the installation of improved , . <br />irrigation systems and better water management. Initial NRCS estimates <br />indicate that, with on-farm irrigation system improvements, about <br />130,000 tons of salt could be reduced annually by project's end. with <br />the installation of improved off-farm lateral systems, the total <br />projected salt load reduction is 163,000 tons. <br /> <br />1995 and Cumulative seepage and Salt Reduction Figures Are: <br /> <br />seepage/deep perc. reduction (ac. ft.) <br />On-farm <br />Off-farm <br /> <br />Salt Reduction (tons) <br /> <br />On-farm <br />Off-farm <br /> <br />20 <br /> <br />1995 Cumulative <br />864 11,236 <br />362 6,193 <br />1,226 17,429 <br />3,522 44,001 <br />1,469 22,555 <br />4,991 66,556 <br />