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<br />. <br /> <br />Need for the Project <br /> <br />. <br /> <br />The RRLC is undertaking repairs to their headgate river diversion <br />structure to ensure that it can continue to divert water from the <br />South Platte River. The current facility has two major <br />components. They are the ditch intake and the river diversion <br />structure. The ditch intake is a concrete structure using six <br />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 Riverside Res~rvoir inlet. This structure has <br />suffered only minimal damage due to times of high flow in the <br />river. The river diversion, which uses a board system to divert <br />flow into the ditch, has suffered extreme damage due to times of <br />high flow in the river. This structure has lost its effectiveness <br />due to the large amount of sand that has accumulated upstream <br />from the diversion. This situation causes the river to break out <br />of its bank on the side opposite the ditch intake. This has <br />happened twice in the last five years. When this happened in the <br />spring of 1999 it cost the RRLC approximately $60,000 to fix the <br />problem. The RRLC can not divert water into their system during <br />these times when the river has broken around the far side of the <br />diversion. This problem will continue to occur unless the river <br />diversion is changed in some dramatic fashion. Additional <br />problems do occur with the existing structure; they include sand <br />plugging the ditch and debris 1 mainly trees, hanging up on the <br />diversion. See photos 1 pages 4 and 5. <br /> <br />. <br /> <br />Feasibility Study <br />Riverside Reservoir and <br />Land Company Diversion Structure <br />February 2000 <br /> <br />2 <br />