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FLOOD03984
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Last modified
1/29/2010 10:15:22 AM
Creation date
10/5/2006 12:15:42 AM
Metadata
Fields
Template:
Floodplain Documents
County
Douglas
Teller
Arapahoe
Community
Douglas, Teller, Arapahoe Counties
Stream Name
South Platte River
Basin
South Platte
Title
Hydrology Report for Flood Insurance Studies
Date
1/2/1975
Prepared For
FEMA
Prepared By
J.F. Sato & Associates
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />Two sizeable tributaries join Eo <br />stream and upstream limits, one at <br />the lower end and the other about <br /> <br />Pl',JT <br /> <br />Creek bet"leen <br /> <br />the <br /> <br />I~o\\.~n'" <br /> <br />a~out 1.7 miles upstream frOD <br /> <br />?, I) <br /> <br />mil es <br /> <br />further upstream. <br />two POil"ltS! taki~~ <br /> <br />The above discharges will be modLfiec'i <br />into account intervening areas. <br /> <br />"~,to these <br /> <br />Seller's Gulch (1. 7 mil~~<:.1 <br /> <br />The peak discharges at section "EII~ up~;t:ream E?nc of the Seller's <br />Gulch reach studied in detail in the 1980 report will ~e used far <br />the entire length of this ne'" 1.7 mi:.I< reach. There arf' no rnaif'r <br />tributaries in this reach: <br /> <br />Location <br />At ll/S Limit of <br />1980 Study (Section <br />"E", on Fig. 1). <br /> <br />Drainage Peak Discharges (cfs) <br />Area, sn.mi. lC"n 50-vr 100-','r SOD-vr <br />_..-:::....::1__.___.__.,,'__........_._____.L_________.,______._._____~..~___,. <br /> <br />12.2 <br /> <br />1 -; I"n <br />, I .) ,_ <br /> <br />3,210 <br /> <br />Q,12D <br /> <br />~), 510 <br /> <br />{~roximate Studies <br /> <br />Peak discharge-frequency relationshLp' for streams studied t,y <br />approximate methods were establishc.d using the procedures of <br />Technical Manual 1, unless better info,~mation was available. If <br />a stream reach included in the present approximate studies was <br />previously analyzed by others using more accurate methods than <br />those of TM-l, these analyses were reviewed and their results <br />adopted if found reasonable and were already approved 0= <br />recommended for approval by competent l~cal or state authorities, <br />Drainage areas and 100-year flood peak :Hscharges for the s I:reams <br />studied by approximate methods are shO\,rD in Table 1. The method <br />used in each case is also indicated in this table. <br /> <br />-3- <br />
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