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I I I I I I I I I I I I I I I I I I I VI-3 RECOMMENDED IMPROVEMENTS A reach by reach description of the selected plan is presented herewith. Further details may be found in the commentaries which accompany the plan and profile drawings in Appendix C. It must be emphasi zed that the plan is comprised of non-structural measures as well as structural measures. Non- structural measures which are of critical importance to the sel ected pl an are regul ation of the 100-year floodpl ain, encouragement of the purchase of flood insurance, a flood awareness campaign and deve10pnent of a flood warning system for C1 ear Creek. For example, under the interim p1 an of improvements for Reach I specific areas are protected against flood damage but no major modification is made to the existing channel and its structures. Thus the existing 100-year floodplain limits remain under the interim plan and must be regulated. Similarly, if the long term plan is implemented in stages, it is likely that a residual 100-year floodplain will remain which must be enforced until all of the improvements are completed. The Proposed Growth and Deve10pnent P1 an for the Ci ty of Golden (Reference 22) points out that thi s City's housing and popu1 ation growth rate is forecast to increase substantially by the year 2000. Accompanying this increase in popu1 ation will be a demand for more parks and recreation area. In addition, Golden is one of the few communities in the Denver Metropolitan Area with a centrally located downtown area that is the focus of the community. The creation of a downtown Golden revita1 ization district has been recommended as the means for the City to maintain its retail market share in the face of increased regional shopping center competition. Erosion and sediment control measures are an important aspect of the se1 ected p1 an. Channel and bridge improvements should be constructed wi th adequate provisions for control of sediment. In addition, new deve10pnent within the study area watershed should provide on-site erosion control during construction to 1 imit the amount of silt washed into Clear Creek, particu1 ar1y during frequent runoff events. The recommended Long Term Alternative for Reach I of upper Clear Creek addresses both of the above described goal s. It would provide additional recreational open space for the growing population and provide a pedestrian/ bicycle transportation link to the future Tucker Gulch trail and the entire Regional Trail System for the Denver Metropo1 itan Area. Because of C1 ear Creek's close proximity to downtown Golden, an attractive water front park which attracts people can also benefit the revitalization of the central business district. Reach I (Upstream Golden City Limit to Tucker Gulch, Station 885+00 to Station 955+00) The mu1 ti purpose aspects of the long term p1 an for Reach I provide oppor- tunities for utilization of funding from multiple sources. That is, non- drainage re1 ated funding sources can be uti1 ized to supp1 ement the costs of the long term improvements along Clear Creek. Right-of-way costs can be re- duced by direct donations, or indirectly by developer utilization of the floodp1 ain area to fu1 fi 11 open space requirements. Federal and State high- way funding can be util ized for bridge improvements under certain condi- tions. In addition, park and open space funds can be app1 ied to the long term p1 an for developnent of the C1 ear Creek corridor as a 1 i near park. The selected dual p1 an is comprised of a long term plan and an interim plan. The long term p1 an cOOlbines bridge improvements at Ford Street and Washing- ton Avenue with a lOO-year capacity grass-lined channel. This plan effec- tively reduces the flood hazard through Golden by confining the 100-year flow to the channel area and minimi zing the backwater effects at Ford Street and Washington Avenue. The interim p1 an for Reach I focuses immediate improvements at key areas to reduce flood damages. Under this p1 an the following structures will be flood proofed: