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<br />0403 <br /> <br />SIMULATED RESERVOIR CONDITIONS <br /> <br />The proposed dam was simulated as an impermeable boundary. The <br /> <br />northern end of the proposed dam will be in contact with bedrock and a <br /> <br />slurry trench containing impermeable material will prevent flow under <br /> <br />.. <br /> <br />the dam. <br /> <br />Constant heads along the southern boundary of the aquifer were <br /> <br />adjusted to obtain the same cross-boundary flowrate as obtained for <br /> <br />simulated existing conditions. The heads were adjusted because the <br /> <br />southern boundary is not far enough from the simulated reservoir not to <br /> <br />be influenced by the reservoir. Furthermore, irrigation south of the <br /> <br />boundary is known to cause ground-water inflow across the boundary. <br /> <br />Assuming irrigation practices remain unchanged, ground-water flowrates <br /> <br />aC:i:"uSS l1u;: ::;uuLilt:~ln aquifer boundary should also remain unchanged 31- <br /> <br />though some redistribution of the flow may occur. <br /> <br />Constant-head nodes along Bijou Creek were adjusted so that the <br /> <br />water table was constrained to be at or below land surface. Conse- <br /> <br />quently, a longer reach of Bijou Creek intercepted ground-water dis- <br /> <br />charge for reservoir conditions than for simulated existing conditions. <br /> <br />/9 <br />