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<br />- <br /> <br />:. <br /> <br />APR 27 '98 04:20PM COLO OFF OF EMERGENCY MANAGEMENT <br />. <br /> <br />P.3/5 <br /> <br />. <br /> <br />HMGP PROJECTS FOR DISCUSSION <br /> <br />1. WELDONA - Local Storm Drainaie and Structural Flood Control Measures to <br />protect approximately SO structures. <br /> <br />Project Cost: S598,14O. Fed Share $400,000/Applicant Share S198,140. <br /> <br />. Channel and ring levee system. <br /> <br />. Construction of a reinforced concrete box culvert under Hwy 144. <br /> <br />. Construction of a 100-year capacity ch3Mel downstream orHwy. 144. <br /> <br />. Increase capacity of existing ditch and culverts located between the railroad <br />embanklnent and Hwy 144. <br /> <br />. ConstrUct spill structures on the Riverside Canal and the Weldon Valley <br />Ditch. <br /> <br />COMMENTS <br /> <br />Ptoject appears not to be cost effective based 011 current B/C analysis. Irrlption <br />ditches. at the upper end of the basin catches sheet flow before it gets to to"Ml at <br />.the lower flood events. Need data for actual damages at lower 1icq~cy events <br />to perform accurate B/C. <br /> <br />PToject as proposed is creaUni a floodplain. <br /> <br />Ptoject as proposed does not address sedimentation and future maintenance. <br /> <br />If proposed project iOes forward. damages at lower frequency events must <br />suppon cost effectiveness of project. Project must address floodplain issue, <br />sedimentation and futlIre maintenance. . . . . .. <br /> <br />County wants to do partial work now. Could downsize proj eet and CA TEX <br />culvert work. Could elevate or tloodproofhomes, which is a CATEX. <br />