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~~ .. <br />Page 2 <br />Brian Munson <br />April 2, 2982 <br />DCC must: <br /> <br />A. develop a stage/discharge curve using outflows generated by the <br />changing controls (weir, orifice, pipe) and use this curve to estimate the <br />head necessary to pass the peak flow given, and show that this head will allow <br />the required 1' of freeboard; or <br />B. develop an inflow hydrograph and route it through the reservoir using <br />the stage discharge relationship mentioned above. This method will substantially <br />reduce the peak flow and computerized techniques are available to perform the <br />tedious calculations. <br />6. Culvert Designs: DCC uses Manning's Equation to defend the culvert <br />designs which are shown. As stated previously, this method is inappropriate <br />for closed conduit designs. DCC should use a closed conduit hydraulics to <br />design t1~e culverts (see nomograph attached). Several of the culverts have <br />no design information given. DCC must present designs for all of the culverts. <br />7. Text: DCC must present a verbal explanation of the purpose of each <br />component of the system, describing contributing areas, peak flows, etc. It <br />is somewhat difficult to follow the presentation without further explanation. <br />/k <br />