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<br /> <br />in which <br /> <br />N <br />o <br />w <br />00 <br /> <br />C (I,J) <br /> <br />I-I <br />J-l <br />Qs <br />Qa <br />C <br />-V- <br />6t <br />M <br /> <br />= Average salinity in <br />time J <br />~ Upstream reach <br />= Previous time step <br />- Seepage <br />= Reach outflow <br />= Concentration <br />= Storm volume in the <br />= Time step <br />= Salt mass pickup <br /> <br />reach I at <br /> <br />teach I <br /> <br />1. <br /> <br />The stability of Equation 5.8 requires I <br /> <br />2. <br />3. <br /> <br />Continuity of flow with respect to <br />the primary channel. <br />Qs(I) < Qe [(I-I, J) + Qe (I-I, <br />J-l))f2 <br />6t < 2 ,-V- [ (I, J -1) fQ e (1, J -1) ] <br /> <br />A listing of the program is in Appendix <br />E (Table E.2). Also included is a listing <br />snd description of the model parameters, <br /> <br />..~ <br /> <br />input data, and format requited by the model. <br />The one-dimensional model simulates storm <br />hydrogrsphs snd halographs, assuming the <br />intrinsic salinity sources to be homogeneous <br />and 'uniformly distributed across the water- <br />shed and salinity uptake to be additive and <br />conservative. For modeling sreas without <br />irrigsted agriculture, groundwater flow was <br />not considered significant and was not <br />included in the model. <br /> <br />V ume,~ <br />". <br />"1 <br /> <br /> <br />Time,T3 <br />T. <br />T, <br /> <br />Figure 5,9. Primary channel wetted perimeter <br />subdivision. <br /> <br /> <br />56 <br />