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FLOOD02319
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FLOOD02319
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Last modified
1/25/2010 6:24:06 PM
Creation date
10/4/2006 10:48:27 PM
Metadata
Fields
Template:
Floodplain Documents
County
El Paso
Community
El Paso County
Stream Name
Arkansas River
Basin
Arkansas
Title
Unincorporated El Paso County Community File
Date
1/1/2001
Prepared For
CWCB
Prepared By
CWCB
Floodplain - Doc Type
Community File
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<br />;t, <br />~ <br /> <br />',' \ <br />, _,"i <br /> <br />CDM <br /> <br />CAMP DRESSER & McKEE INC, <br /> <br />environmental engineers, scientists, <br />planners, & management consultants <br /> <br />Writer's Tower, Suite 1100 <br />1660 South Albion Street. Denver, Colorado 80222 <br />303758-4351 <br /> <br />February 11, 1981 <br /> <br />I,; <br />II <br />ji <br /> <br />[iiJf;l r;::?~D[jr)"'"-Ir--, <br />. .., --:l <br />J . . <br />! F <br />riJ, fa 1 3 1981 <br /> <br />CULu <br /> <br />COtisERvA'r;ON' ~~O <br /> <br />"'J.Q <br /> <br />In response to our phone conversation concerning the hydrologic analysis <br />proposed for use in our current FIS of Fountain Creek in El Paso <br />County, Colorado, I am providing you with the following summary of <br />100-year flow rates from existing literature. <br /> <br />Mr. Gene Jenscok <br />Water Resource Specialist <br />Colorado Water Conservation <br />823 State Services Building <br />1313 Sherman St, <br />Oenver, CO 80203 <br /> <br />Oear Gene: <br /> <br />H <br />~', <br /> <br />~ <br /> <br />Peak 100-Year Discharges <br />Fountain Creek at the Pueblo/El Paso <br />County Li ne <br /> <br />Study <br /> <br />COE, FPIR 1968, Fountain Creek in Pueblo County <br />COE, FPIR 1974, Fountain Creek below Monument Creek <br />COE, Design Memo. No, 1, Hydrology,1978, Fountain <br />Dam and Reservoir <br />MSM, FIS 1980, City of Pueblo, Colorado (FIA) <br /> <br />Flow Rate <br /> <br />62,000 cfs <br />93,000 cfs <br /> <br />64,000 cfs* <br />64,000 cfs* <br /> <br />* This flow rate is at the City of Pueblo Corporate limits. <br /> <br />The discrepancy in flow rates between the COE Studies for this <br />location on Fountain Creek has not at this time been accurately <br />determined. Similar hydrologic methods were used on all of the <br />studies (statistical stream gage analysis), however, the 1978 COE <br />study did have stream data adjusted for historical flooding. No <br />response has been received from the COE to explain the high peak <br />flow rate obtained in the 1974 FPIR of Fountain Creek below <br />Monument Creek. <br /> <br />At this point in CDM's current FrS for El Paso County, we have <br />reviewed the hydraulic analysis carried out by the COE in the <br />1974 study, and have found no reason not to adopt the 100-year <br />flood boundary and profile presented therin, other than the dis- <br />crepancy in the peak 100-year flow rate between existing and <br />current hydrologic studies of Fountain Creek. It should be pointed <br />out that the 1974 COE study correlates well with the Current Fountain <br />Creek at Manitou Springs FIS (PRC, INC., 1980) and with <br />the hydrologic analysis summarized by the COE in their Report on <br />Hydrologic Investigations for Flood Insurance Studies of Colorado <br />Springs and El Paso County, for Fountain Creek above Manitou Springs. <br /> <br />i <br /> <br />
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