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FLOOD05354
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Last modified
1/25/2010 6:48:59 PM
Creation date
10/5/2006 1:28:44 AM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Community
Erie
Stream Name
Coal Creek
Basin
South Platte
Title
Erie Preliminary Drainage Study
Date
5/30/1989
Prepared For
Erie
Prepared By
JR Engineering, Ltd.
Floodplain - Doc Type
Project
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<br />- <br /> <br />BOULDER COUNTY <br />STORM DRAINAGE CRITERIA MANUAL <br /> <br />[FIGURE 802 <br /> <br />TRA VEL TIME VELOCITY F"QR RA'TIONAL METHOD <br /> <br />50 <br /> <br />---TZ-- /)J I J /f.-- <br />-- ---:/'-7 -,/ filII "- <br /> <br />f lilt'" <br /> <br />~ ~/II ~ <br />f fO Ii <br /> <br />$.,~ ~ J <br />~ -,",~_.'~f-" ~ <br />... 'c-! I-~... ~f <br />If - 0 1-'1" ,~ <br />~ .~ oft' ~ ':1 <br />"'" ..;:) _ C 01..: <br />:::,,, ..... ot J <br />"- ~" 4~1I' ~...' ~r <br />~ 'l ~ 0 ~I <br />l I-.;>fj-..... I-I}~ <br />,,~__ ~'ff... <br />~- co ,J - co '" <br />~I) ...... I <br />~ - J <br /> <br />}i (IV -'if <br />51.) -!l;~~. <br /> <br />_ __ 4, _. _ _ <br />01. _ <br />, I <br />I I <br />I I <br />I I <br /> <br />30 ---- <br /> <br />f---.- --_ _. __ _ <br /> <br />I- 20 <br />z <br />w <br />o <br />a: <br />w <br />0.. 10 <br />z <br /> <br />W <br />0.. <br />o <br />..J <br />Ul <br /> <br />w <br />Ul <br />a: <br />:;) <br />o <br />o <br />a: <br />w <br />I- <br />~ <br /> <br />1 <br /> <br />WRC ENG. <br /> <br />~ <br />~ <br />...{r <br />: <br />... <br />... <br />- <br />~ <br /> <br />5 <br /> <br />RII <br />~ I <br />a-V <br />.t <br />i/ <br />~ <br />~} <br />it! <br />';~. <br /> <br /> <br />3 <br /> <br />2 <br /> <br />I <br /> <br />" <br /> <br />f <br /> <br />.5 <br />.1 <br /> <br />I <br />.2 <br /> <br />I <br />I <br /> <br />I <br />I <br /> <br />" <br /> <br />.3 <br /> <br />,5 1 :2 3 5 <br />VELOCITY IN FEET PER SECOND <br /> <br />-- -- <br /> <br />REFERENCE: <br /> <br />..- <br />-- <br /> <br />-- <br /> <br />-- <br /> <br />.... <br /> <br />10 <br /> <br />20 <br /> <br />"Urban Hydrology For Small Watersheds" Technlca' <br />Release No. 55, USDA, SCS .Ian. 1975. <br /> <br />-644- <br />
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