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Last modified
1/25/2010 7:12:37 PM
Creation date
10/5/2006 3:10:11 AM
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Template:
Floodplain Documents
County
Jefferson
Community
Arvada
Stream Name
Ralston/Leyden Creek
Basin
South Platte
Title
Major Drainageway Planning
Date
8/1/1977
Prepared For
Arvada
Prepared By
UDFCD
Contract/PO #
&&
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I U) <br />IIJ <br /> :I: <br />I (.) <br />~ <br /> z <br />I :I: <br />~ <br /> ~ <br />I 0 <br />..J <br />..J <br />I ~ <br />Z <br /><t <br />Q: <br />I ..J <br />~ <br />g <br />I <br />I <br />I <br />I <br /> <br />3 <br /> <br /> Sk)pe Break Line <br /> 5 <br />NOTE: 5 minute value is <br /> 42% of 30 minute <br /> value. <br /> 4 <br /> " '" 20 ... 40 !lO 80 100 120 150 180 240 300 <br /> <br />2 <br /> <br />o <br />(Mi..) 5 <br /> <br />30 <br /> <br />60 <br />1 <br /> <br />360 <br />6 <br /> <br />8 <br /> <br />10 <br /> <br />12 <br /> <br />14 -16 18 20 22 24 (Houri) <br /> <br />2 <br /> <br />3 <br /> <br />4 <br /> <br />5 <br /> <br />DURATION IN MINUTES AND HOURS <br /> <br />5 <br /> <br />100 YR <br /> <br />4 <br /> <br />tOYR <br /> <br />3 <br /> <br />2 YR <br />2 <br /> <br />o <br /> <br />RALSTON CREEK <br />East Rainfall <br />(uncorrected for area) <br /> <br />RAINFALL <br />DEPTH - DURATION - FREQUENCY GRAPHS <br />WRIGHT - McLAUGHLIN ENGINEERS <br />FIGURE HA-l <br />
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