<br />,
<br />
<br />Fli'IUR.l:FLOODS
<br />
<br />This section of th~ report discusses the Standard
<br />
<br />Project Flood and the Intermediate Regional Flood on Salt Croek in
<br />the vicinity of pueble, Colorado. and some ,~f the hazards of cloud-
<br />b~r$t type floods over small areas.
<br />The standard Project Flood represents the rea~onable
<br />upper limits of expected flooding. Floods of Inte~odiate Regional
<br />Flood $i~e may be expected to OCCUr more often, but they will not
<br />be as savere as the infrequ~nt Standard Project Flood.
<br />Large floods have occurred in the past on the Arkansas
<br />River and tributaries in the Pueblo area. Cloudbursts similar to
<br />
<br />those causing past floods will undoubtedly recUr in the Salt Creek
<br />Basinano.these t:orrential rains lMY b" equal to or greater than
<br />anything that h~$ occurred in the past. It is dosirable in the
<br />determination of futu:<e floods whiCh may occur on a given stream to
<br />consid~:< all sto~s and floods that have occurred in the region on
<br />watersheds with sirnila:< topography. ground cover and physical charac-
<br />teristics. This ~s been done in the Salt Creek Basin where only very
<br />lilnit..,J i"(o,,,O<>,tio" is dv"il"il1" on b";:i,, "torm" and flooding.
<br />The ma.xirnum known floods that have occurred within the
<br />
<br />Pueblo ar~ are listed in Table 2.
<br />
<br />rnt..rmediate Regional E'lood
<br />The Intermediate Regional I'lood is defined as having an
<br />average frequency of CCCUrrence of once in 100 years at a designated
<br />to<;ationillthollghitrnaynccurinanyyearandp<lssihlyevenin
<br />successive years. The Intermcdi"te Pegional FIQ<>d represents"
<br />major flood. althouqh it is less severe than the Standard Proj~ct Flood,
<br />The ~~gnitude of this flood on Salt Creek yas determined
<br />by""L>giol\alflowfr"'quel\"yanalysisfr01:lwhichpcakfrequcncyc\lrvcs
<br />
<br />....,redev<!lloped.
<br />
<br />Flood ch"r""toe~l~tics of t.he rntermediat.. Regional Flood
<br />fo~ oivcr"qod m""i.rrr= condition" ,..,thin :l>c studv reach arc shown in
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