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i• <br />Need for the Project <br />The UPBCC is undertaking repairs to their headgate river <br />diversion structure to ensure that it can continue to divert <br />water from the South Platte River. The current facility has two <br />major components. They are the ditch intake and the river <br />diversion structure. The ditch intake is a concrete structure <br />using steel radial gates for adjusting flows into the ditch. This <br />* structure is in good condition and can still adequately control <br />flows into the canal. This structure has suffered only minimal <br />damage due to times of high flow in the river. The river <br />diversion, which uses a combination of a radial gate, two slide <br />gates and a solid diversion wall to divert flow into the ditch, <br />is the place of concern. This structure has been damaged in the <br />past but currently is in fair and operable condition. The problem <br />has to due with the shale formation on which the river diversion <br />sits. Upon inspection, it was found that a majority of this shale <br />formation has eroded away from under the diversion structure. See <br />photos, pages 4 and 5. This erosion has occurred during past <br />decades of high river flow over the structure. The erosion is <br />� great enough that the diversion structure will fall over at some <br />time in the future. The concern at this time is that this failure <br />may occur during this year's spring runoff. If the diversion <br />should fall over the UPBCC would not be able to divert water into <br />its system. Failure to divert water would be the financial ruin <br />of the entire Upper Platte and Beaver system. <br />� <br />�� <br />Feasibility Study <br />Upper Platte and Beaver <br />Canal Company Diversion Structure <br />March 2002 <br />'• <br />2 <br />