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<br />~ Model Results <br /> <br />I The' distribution model was used to evaluate the proposed project for <br />Ivarious river flow conditions and combinations of proposed canals. Two as- <br />Isumptions made in the model that are simplifications which need to be consid- <br />lered in any engineering analysis are: (1) The ditch capacity is 500 ft3/s <br />ifor its entire course and (2) water can be diverted and delivered all winter. <br />I <br />'A typical example of model results is shown in table 5. The simulation com- <br />;puting these results used 1 year of inflow data representative of the 50-per- <br />icent divertible flows (table 2) and assumed the entire proposed canal system <br />'was used with 65 ponds along the two canals that would be constructed through <br />:the sand hills. These results show that an average of 59.3 ft3/s would be <br />:diverted during the year and most of that water would be lost as seepage. <br />:However, not all of the seepage would be located geographically to aquifers <br />:in the alluvial valleys. The column labeled "Beneficial seepage" accounts <br />ifor all the seepage except for that occurring in section 1 of the canal sys- <br />;tem (fig. 7). Most of section 1 is the existing part of the Bijou Canal and <br />overlies the alluvium of the South Platte River valley. Thus, seepage in <br />:this part of the canal system will recharge the South Platte River alluvial <br />laquifer and contribute eventually to the return flows of the river, but not <br />!to the alluvial aquifers of Badger and Beaver Creek valleys. The simulation <br />'also indicated that ponds would contain water for only 5 of the 12 months, <br />~ith a maximum total surface area of 304 acres. <br /> <br />I <br />I <br />I <br />, <br />i <br /> <br />Table <br /> <br />5. nDistribution-model results for entire proposed canal system <br />with 65 ponds ar~ 50-percent probability river diversions <br /> <br /> Diversion Total Beneficial Pond Total pond <br /> Month inflow seepage seepage seepage surface <br /> (cubic feet (cubic feet (cubic feet (cubic feet area <br /> per second) per second) per second) per second) (acres) <br /> 'October--n- 28.2 28.2 0 0 0 <br /> :November-n- 18.2 18.2 0 0 0 <br /> ,Oecember-n- 19.9 19.9 0 0 0 <br /> 'January----- 54.7 54.7 10.76 0 0 <br /> February---- 79.6 79.6 32.44 0 0 <br /> 'March----n- 116.0 112.31 61.25 19.72 89.5 <br /> 'April------- 101.0 104.01 54.48 13.01 65.8 <br /> May-------n 94.5 93.61 44.77 3.41 17.3 <br /> IJune-------- 199.0 177.17 118.79 77.36 304.0 <br /> i <br /> Julyu------ 0 20.35 20.35 20.35 145.3 <br /> August------ 0 0 0 0 0 <br /> 'September--- 0 0 0 0 0 <br /> I <br />'" I Averagen- 59.3 59.0 28.57 11.2 51.8 <br /> <br />24 <br /> <br />>= <br />