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FLOOD10962
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Last modified
1/26/2010 10:13:44 AM
Creation date
11/19/2007 1:45:30 PM
Metadata
Fields
Template:
Floodplain Documents
County
Arapahoe
Community
Littleton
Stream Name
Slaughterhouse Gulch
Basin
South Platte
Title
LOMR - Affected Panel 10D - Case No. 03-08-0030P
Date
8/28/2003
Prepared For
Littleton
Prepared By
FEMA
Floodplain - Doc Type
Historic FEMA Regulatory Floodplain Information
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<br />information on. the operation of Ch.atfield Dam. For that reason, <br />the South Platte River does not match the regional data of the <br />USGS. <br /> <br />The Hood frequency-discharges used in thE~ two independent <br />re-analyses of the South Platte River were taken from the May 1983 <br />hydrologic study developed by Merrick and Company under ~ontract to <br />the UDFCD (Reference 1). Analyses were carried out to e~tabl ish <br />the peak elevation-frequency relationships for each flood source <br />studied by detail~d methods. Peak-discharge area relationships for <br />the streams studied by detailed methods within Littleton except for <br />SJeD 6100 are shoWn in Table 1. <br /> <br />Table 1. SUMMARY OF DISCHARGES <br /> <br />Flooding Source <br />and Location <br /> <br />Drainage Area <br />(sQuare miles) <br /> <br />Peak Di sC~lrges (cf s) <br />10-Year 50-Year 100-Year SOa-Year <br /> <br />South Platte River <br />Above Big Dry Creek <br />Just upstream of <br />the confluence of <br />Dutch Creek, near <br />Fairway Lane. <br /> <br />24.7* <br /> <br />__1 <br /> <br />Big Dry Creek <br />Above Windermer <br />Street <br />At South Pl.atte <br />River <br /> <br />11.0 <br /> <br />19.0 <br /> <br />Slaughterhouse Gulch <br />At Souih Platte River <br /> <br />2..0 <br /> <br />I <br /> <br />South Tributary to <br />Slaughterhouse Gulch <br />At Slaughterhouse Gulch <br /> <br />0.37 <br /> <br />Littl.ets Creek <br />At South Platte River <br /> <br />2.3 <br /> <br />Lee Gulch <br />At South Platte River <br /> <br />2.5 <br /> <br />SJCD 6200 <br />At a point upstream of <br />Platte Canyon Road <br /> <br />__1 <br /> <br />3,300 <br /> <br />1,300 <br /> <br />5,100 <br /> <br />7,100 <br /> <br />5:20. <br /> <br />438 <br /> <br />1,800 <br /> <br />1 ,900 <br /> <br />__1 <br /> <br />6,900 <br /> <br />2.,200 <br /> <br />7,000 <br /> <br />9,100 <br /> <br />LOt:30" <br /> <br />520 <br /> <br />2.,300 <br /> <br />2,500 <br /> <br />__1 <br /> <br />lData Not Available <br />*Drainage Area Reflects Only Contributing Area Below <br /> <br />11 <br /> <br />8,900 <br /> <br />15,000' <br /> <br />2,700 <br /> <br />4,000 <br /> <br />REVISED <br /> <br /> <br />8,100 <br /> <br />13,100 <br /> <br />10,400 <br /> <br />17,200 <br /> <br />550 <br /> <br />no <br /> <br />2,800 <br /> <br />4, ,200 <br /> <br />2,900 <br /> <br />4,500 <br /> <br />2,440 <br /> <br />__1 <br /> <br />ChBf\tla~tLrp <br />REFLECT LOMR <br />D,ATED AUG 282003 <br />
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