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- - -. - tbe develop~eDt of pa!'ka, golf courses, parking areas, end athletic fields. B'-l11dlngs ill these neas should be the type which can be flooded ....lthout - BU8t~lDIDg appreciable damsge. HomeU.8hould not he permitted 1n Buch BreeD. Areas sustaining le86 frequent flooding should be used for co~erc181 end industrial structures with floor levels and storage sress located above the pOtential flood elevation. Zoning of the areas should sleo allow s~flcleDt roolllforunrestrictedpesssgeoffloodwaurs. BUILDING CODES Building codes caD be deelgDed.to restrict the location of damageable property in the !'lood plaiD. T'nrOllgh the inclusion of lIlinimwn elevs:tlous 1D building eOdes, floor heights sDd roecb~Dlcel equl~eot, such as furnaces aDd "8~X' heetere,. call be kept above pOulble flood heights. Aloo the types of buildings snd their use can be controlled. Floodproofing o~ new inst9llations may be required. SUBDIVISION REGULATIONS Subdivision regulations should specify the degree of protection required for allY potential development in a flood prOIle area. They are a means of controlling building size and location, requiring proper drainage ~aci1ities and land use, and assisting a prospective buyer in making a choice in sn unfamiliar a~a. FLOOD PLAIN EVACUATIon Reduction of flood hazerdo can be achieved by removal of damageable property from the area. This is often a costly and impractical process, particularly if the area contains a great deal of development.. Thia method lMY be applied to undeveloped areal! and to the removal of old, uneconomic..l structures. PLOODPROOFING Floodprooting is patticularly adaptable to existing structurea. Measures that may be undertaken include reinforcing the structure to Withstand the force of flood waters, permanent closures of 10\< level openings, installation of valves or gates on eewer and drainage linea, moving stocks snd supplies to higher floors, watertight protection for machinery, appliances, and utilities that cannot be moved, having aand filled burlap bags avai1sble for building te~rary flood reta~ing walls, and training personnel in evacuation and flood fighting proced~re8. MallY of these measures caD be uscd in Il/lIo' structures to permit their construction in the flood plain. FLOOD CONTROL \lORKS Flood protection worka could consiat of levees, channel improvements, or flood storage facilitiea, or a combination of these. Studies are nresently underway to determine if such worka on ~B~ Bnd Clear Creeks would be economically jU6ti~ied. Preliminary findings indicate that econQQical juatification may be difficult to obtain. O'l'lreRCONTROLS Warning systems should be establiahed to alert flood plain occupants when the possibility of flooding is evident. Receipt of advance warning permits evacuation of the flood plein, thereby red~cir.g potential loss of life and allowing ti~ for application of emergency floodproofing measures. Channela should be kept fre.. of all Obstructions, end the dumping of trash and other material in the natural f100dway should be prOhibited. Growth and debris obstructing Clear Creek channel RESPONSIBiLITY Appl1cationOft'loodp18in ioi'oI"7lllltion is the respolldbUity Of local authorities. This report ond supporting technical appendix should not be construed as implying any interest to extend Federal authority Over zoning, or other regulation of t'lood p1.ein use, or coml1l1ttingthe Federal GoverllDlent to 1nvestigeting, planning, dedgning, conlltructine:.. Operating, or maintaining any facilities dbcussed except to the extent that they may be authorized by the Congresll. The flood atages and outlines presented in this report are based on estimated evcrage conditions at the t1l'lle the report.....sprepsred. Accordingly, they are reasonable rather than precise indiCAtions of probable occurrences.