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<br />INriRPRETATION.Mil2~OF REroRT <br /> <br />TABLE h CROSS-SE.CI'ION INFORMATION EQ! FRASER RIVER <br /> <br />Flood Frequency ~ Dischar~e <br />Discharges listed in "Hydrologic Analysis" in this report are glven <br />for the 10-,50-,100-, find 5OO-year freQuencies. This discharge <br />information can be used for planning and engineering of floodplain <br />improvements as well as for floodplain regulations. <br /> <br />X-sec <br />number <br /> <br />Comments <br /> <br />Location* <br />(St.-tion) <br /> <br />1'5 <br /> <br />34+40 <br /> <br />20' <br /> <br />37+60 <br /> <br />The lOO-year flood Can be expected to occur at any time in a given <br />area. Based upon recorded historical precipitation, land runoff <br />characteristic", and other data, ther is a one pcrcent chance that the <br />100-yearflood will be equalled or exceeded in anyone year. The <br />laO-year flood is considered by CWCB and the Federal Insurance <br />Administration as the flood magnitude for "hich floodplains should be <br />designated for regulatory and illlprovement purposes. InColorado,the <br />100-year floodplain is an area of state interest as defined in House Bill <br />1041. <br /> <br />'69 <br /> <br />43+80 <br /> <br />"4 <br /> <br />52+30 <br /> <br />418 <br /> <br />58+70 <br /> <br />444 <br /> <br />61+30 <br />62+10 <br /> <br />452 Hwy 40 bridge exit <br /> <br />FlOOd events rarer than the 100-year flood <br />occur. Pl"n.. for land improvement adjacent to the <br />should consider the probability of flood damage. <br /> <br />455 Hwy 40 bridge entrance 62+40 <br />'" 64+60 <br />519 68+80 <br />601 77+00 <br />'" 84+80 <br />m 92+40 <br />825 99+40 <br />950 111+90 <br />1021 119+00 <br />10% 121i+50 <br />1114 1213+30 <br />1172 <34+10 <br />1256 142+50 <br /> <br />event Can and "ill <br />100-year floodplain <br /> <br />Flood Elevations <br /> <br />The flood profile for the <br />Tables I and 2 of this report give a <br />cross-section. The HF1>2 computer <br />,,'ater Gon~ervation Board. In case <br />flood elevntions. the flOOd profiles <br /> <br />study area ia given in PI~tcs <br />summ~ry of pertinent. data <br />out.p"tisinthefilesofthe <br />of any qt",,,tion regarding <br />sho~ld be cons~lted. <br /> <br />8toll. <br />lit e~ch <br />Colorado <br />lOO_y"ar <br /> <br />I <br />I <br /> <br />FlOOd Insurance <br /> <br />The National Flood Insurance Program (NFIP) is a Federal program <br />that enables property own"r$ too buy flood im;~r"nc" "t a r""~onable. <br />subsidized cost. In return, COlnmulllties lire required to carry out <br />floodplain maoagen,"nt measures t.Qprotect lives and new construction from <br />future flooding. Table 3 gives some Nfl? ratc information. Additional <br />information on the NFl? is aV3ilable aa follows: <br /> <br />I <br /> <br />CO~~NITY INFORr~TION <br /> <br />AGENT AND BROKER lNFOkXATlON <br /> <br />'I <br /> <br />Federal Emergency Management Agency <br />Natural & Technological Hazards Division <br />Bldg. 710, Denver Federal Center <br />llox2J267 <br />Denver,CO.8D225_Cil!i7 <br />(tel. no. 235-4830) <br /> <br />Mr. Jim Quinn <br />Computer Sciences rAlrp. <br />2801 YounRfield, suite 320 <br />(~ol d en, CO. 80401 <br /> <br />....................................... <br /> <br />~ Distance ahDv~ cnn~luence with the Colorado River. <br /> <br />(tel. no. 231-991l} <br /> <br />, <br /> <br />Channel <br />bot torr, <br />elev. <br />(tt,msl) <br /> <br />l00-yr <br />!load <br />width <br />(ft) <br /> <br />100-yr <br />flood <br />elev. <br />(ft,msl) <br /> <br />l00_yr <br />Channel <br />vclOcit) <br />(ft/sec <br /> <br />7928.0 7931.3 1116 4.3 <br />7931.8 7933.2 919 '.6 <br />7933.5 7937.9 m U <br />7940.0 7942.9 418 '.4 <br />7943.0 7947,7 124 9.1 <br />7945.6 7949.8 13' 8.8 <br />7944.8 7950.4 99 8.6 <br />7944.8 7951,0 99 '.4 <br />7947.0 7952.3 551 4.8 <br />7950.0 7954.3 40' '" <br />7956.5 7959.9 229 6.0 <br />7962.0 7964.2 661 6.5 <br />7966.0 7969.3 522 6.6 <br />7970.0 7973.1 1098 6.3 <br />7976.0 7978.3 1247 U <br />7978.7 7981.6 582 7.5 <br />7982.0 7986.4 194 8.7 <br />7983.0 7987.6 129 11.1 <br />7988.3 7992.2 444 6.5 <br />7992.0 7995.9 519 U <br /> <br />, <br />