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<br />PAST FLOODS <br /> <br />TA8LE4 <br />BOULDER CREE~ II <br /> <br />TMis section presents .ho flood histories and storm <br />characteristics of Boulder and Sou.M 30ulaer C,eeks. <br /> <br />StreJ", Gaging Station Near Orodeil <br />(LocJfed I mila upstrea..tromFourmile Creek and 3tnlles <br />sour-hwestof tr_.,courthouSB in Boulder) <br /> <br />Flood Rccords <br />Large flOOds have been repartee In the Boulder Crook <br />EJasinduringtheyeil:soi IS64, 1876, 1894, 1914, 1923, i938,and <br />1969. The largest Mistoric flood occurred in 1894. Computations, <br />~hicM w(lr-o ",ade 18 years aftor the flood. I ndlcated the peak disCharge <br />.'lIilyhavabeenilsrnucMil511,OOOcubicfeotpersecond(c.f.s.l. <br />Strearn gaging stations show that hIgh streamflows occurred at othor <br />times. rnestr"'ilmgageonBoulderCreek is locatednearQrodeil,3 <br />miles southwostof the courthouse in Boulder. TheOrou(jllgage..as <br />tlrstestilblished In 1887 and operated Interrnittontlyuntll1916. <br />The records are continuous trom 1916 to the present tlrno. Asecond <br />9<>ge located 2 1/2 miles downstre<>m trom the Orodoll gage w<>s oper<\ted <br />intermittontly trorn i888 until 1908. The periods of operation of <br />these t..o g"ge~ MId the events whiCh produced peak discharges ;n <br />exCess of I,OOOc.f.s.along'''iththedateotoccurrcnceareprovided <br />in tebles 4 "nd 5. The floo<ls of 18M, 1875, and 16<l4occurred <br />durln9 periods when the Dilges were not In operation. The floods of <br />!923 end 1938 occurr:!d trom inf lOw downstreem of toe Orodel: gage On <br />BoulderCrcuk. <br />^ st,ea~ gaging station was located on South Boulder Creek <br />I mil~ wtlsl 01 Eldorado Spring~ in 1888. Tnis gage has oeen In <br />continuous operatIon since 1904. Taole 6 presents the 9agin9 records <br />on South Boulder Craek. The only major flOOd roportod on South Boulder <br />Crook occurred in 1938. Table 6 showS that the poakdischarge for this <br />flood fer exceeded t.hepeekdischerges forall other recorded flow s. <br /> <br />Perioas 0' Operation <br />FrOl'l' '0 <br />'"9 18137 Cd 1887 <br />A~r 1868 0", 12S6 <br />'" 1906 '0' 1914 <br />'....r 1916 "resent <br /> <br /> f'eak:ilscharqes U <br />Deteof Occurrence c.f.s. <br />3 ',g 1918 1,300 <br />, Jun 1921 2,500 <br />" "" 1935 1,060 <br />" J" 1941 1,120 <br />" J" 1947 1,290 <br />" "'0 1951 1,220 <br />, J" 1952 1,180 <br />29 J" 1957 1,01::: <br />" Jul 1965 1.190 <br />, "y 1969 1,150 " <br /> <br />'I <br /> <br />Rocords taken 'rom United Stiltes Departmont of interior Geological <br />Survey, "Water-SupplyPJp..rs IJIO..nd 1680" and the yearly "Water <br />SurfacoRccorJsforColorado". <br /> <br />u <br /> <br />Only poak diSCharges whiCh oxceoded 1,000 cubic feot pur second <br />Ic.f.s.l"relisted. <br /> <br />o. <br /> <br />f'relimln<lryestirr.;lre. <br /> <br />" <br /> <br />" <br />