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Last modified
11/23/2009 12:58:13 PM
Creation date
10/4/2006 10:08:52 PM
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Floodplain Documents
County
Gilpin
Community
Central City
Stream Name
Eureka and Nevada Gulches
Title
Master Drainage Study
Date
2/12/1988
Prepared For
Central City
Prepared By
HydroDynamics
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />~ <br /> <br />iii <br /> <br />- <br /> <br />. <br />. <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />~ <br /> <br />~ <br /> <br />~ <br /> <br />~ <br /> <br />p.IO <br /> <br />**************************************** <br />* * <br /> <br />'... BeB eUf;:'/E, i',1IJ~IBER METHOD ..' <br />* FLOOD HYDRDGRAPH EVALUATION .. <br />* * <br />************~.*************************** <br /> <br />WATERSHED: <br />FLOOD EVENT: <br /> <br />NEVADA GULCH AT EUREKA GULCH CONFLUENCE <br />lOO-VEARI b -HOUR STORM <br /> <br />CLIENT: <br />PROJECT NUMBEP: <br /> <br />[;HJTf'(I'\L. C I T'i <br />C37020--0~5 <br /> <br />DATE: <br />USER: <br /> <br />o 1 H_":';;'~ 1--1 Si88 <br />,JSF <br /> <br />WATER8HED CHARACTERISICS <br />************************ <br /> <br />WATERSHED ARE~\ <br />AVERAGE SLOPE <br /> <br />704.00 !'\CF,ES <br />23.40 PERCENT <br /> <br />NUMBER OF SUBDRAINAGES: <br />EFFECTIVE CURVE NUMBER <br /> <br />1 <br />80.31 <br /> <br />RUN.OFF CHARACTER 1 tor I Cb <br />********************** <br /> <br />TOTAL STORM PRECIPITATION <br />HYD~OGRAPH TIME INCREMENT <br /> <br />2.75 <br />0.25 <br /> <br />INCHES <br />l.mURS <br /> <br />F'EAf( FLOW <br />TIME TO PEAK FLOW <br />RUNOFF VOLUME <br /> <br />423.40 <br /> <br />CFS <br />HOURS <br />ACF,E-FEET <br /> <br />:3.25 <br />63.57 <br /> <br />TOTAL STORI1 RUNDF'F <br />RUNOFF COEFFICIENT <br /> <br />1.08 INCHES <br />0.3':.J <br />
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