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<br />overland to the north ~nd are not oonfined to the Salt Creek ohannel. <br />St. Charl",s Reservoir No.2 has a 24" outlet pipe which empti"s into <br />Salt Creek. Just downstream of Reservoir No. 2 Salt Creek orosses <br />\lnder the old u.S. Elgh'"ayBS-87e"'b..nknent..nd then through the new <br />doubl" "fltbllnkm,.~t under Highway 1-25. FrOl1' the highway th" creck <br />follows a sinuous channel abOut six and one-~alf miles th~ough the <br />CF & I St",,,l Corpo~ation property to its junction with the ~rkansas <br />River. <br /> <br />P~S'I' FWJOS <br /> <br />5ouroes of Data and Records <br />~ere are no records of stream gages Or discharges <br />available for Salt Creek. Information on past floods in the area, <br />as available in newspaper files and other historical docwnents, is <br />almost exclusively concerned with the lax"er aspects of flooding on <br />the Arkansas River or Fountain Creek. ~he flood prOfiles and flooded <br />area maps were developed from the results of previous studies, <br />field investigations and office computations. <br /> <br />Flood Season and Flood Characteristics <br />Most of the flood producing storms over the Salt Creek <br />watershed occur durinq the period fr= May throu~ Auqust. During this <br />period, masSeS of warm, moist air from the Gulf of Mexico and cold, <br />comparatively dry air from the polar regions combine over the water- <br />shed to cause increased thunderstorm activity. Stream flooding generally <br />results from prolonged or successive storms that produce heavy rain- <br />fall and 1argevolumes of runoff. <br />Valley storage, high infiltration rates, and irrigation <br />diversions cause oonsiderable attenuation of the flood_flows 1I\0ving <br />downstream to the Ark.>nsas River. In the study area. floods are <br />characterized by high peak flows, and moderately short durations. <br /> <br />SUmmary of Historical Floods <br />Historical fioods occurring in the general Pueblo <br />region have been reported with reasonable accuracy since the mid <br />1800's. Pueblo floods whiCh primarily inVOlved the Arkansas River and, <br />most probably, simUltaneous flooding on the study tributaries were <br />recorded in 1864,1894,1921, .md 1935. l<eUable inforlllationof <br />other damaging floods that have occurred has been lost in the obscurity <br />of time. Except for the urban industrial flood pl.lln ..ncroachment: <br />""hting On S,,-lt: Cre"k nt'ar h" ""'11th on ~h~. A".k~n"as ltiver, develop- <br /> <br />, <br /> <br />, <br />