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<br />26 <br /> <br />o <br />-.J <br />CJ1 <br />"'" <br /> <br />through which the velocity components in the vertical and <br /> <br />lateral directions to the flow are zero. The equation <br /> <br />describing the flow then reduces to the form, <br /> <br />Q = AKdh/dx............................ ..... (8) <br /> <br />where Q is the discharge, A is cross-sectional area of <br /> <br />ground water flow, K is the average hydraulic conductivity <br /> <br />of the strata under consideration, and dh/ dx is the <br /> <br />.hydr":,'O!iS,&L,!-Q.ie.nt in the direction of flow. <br /> <br />(2) The assumption is made that a good correlation exists <br /> <br />between the behavior of the point being modeled and aU <br /> <br />other points in the system to some external stimuli (e. g. <br /> <br />irrigation). This assumption is justifiable because the <br /> <br />application of irrigation is .,,~~..l.!IDegto.~b':u)na.YJ).jLQ.rm <br /> <br />vVOi~_l<s.. !,'J'TN-r.^'-', <br />'! HR._ f-". t:>OLf~ <br /> <br />basis when computing the water budgets in subroutine <br /> <br />WATER. <br /> <br />If the ground water outflow is rated against the various hydro- <br /> <br />logic influences encountered in the st\1dy area at the point indicated, <br /> <br />then the values of hydraulic conductivity measured in the field must <br /> <br />be modified to adjust for the strata areas in the "screen door" model. <br /> <br />Assuming the flow is passing through a model with n strata having <br /> <br />areas Al' A2' . . . An and having the same temporary values, of field <br /> <br />measured hydraulic conductivity, K'l' K' 2, . . " K' n' as exists at the <br /> <br />modeling point, the equation describing the discharge through the <br />model would become, <br /> <br />l:; <br />