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FLOOD09863
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Last modified
1/26/2010 10:10:54 AM
Creation date
10/5/2006 4:42:25 AM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Community
Longmont
Stream Name
St. Vrain Creek
Basin
South Platte
Title
St. Vrain Creek Hydrology
Date
7/10/1985
Prepared For
Boulder County
Prepared By
Engineering Professionals
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br /> <br />'" <br /> <br />:=JAfETY <br />,~II.\LYSIS <br />UII11 G, ,~P!I <br /> <br />SYlIOERS <br />DURH ION <br />HOURS <br />1.000 <br /> <br />M'D P', R^,'ETERS <br />CT OP <br />C.F.S <br />.o,1D ?07'l9.7 <br /> <br />1,000 <br />D~ <br />.'lQ->1 ~ <br />9').02 <br /> <br />1I0UR UN 11 <br />l. <br />~1 ILE~ <br />In.OO <br /> <br />IIYOR"GR,\PII D~H <br />LCA LP <br />rllLF:~ <br />10.00 . :"l;/l(l <br /> <br />W50 <br />1I0URS <br />1. 76 <br /> <br />W75 <br />HOURS <br />1. 07 <br /> <br />UN 11 VOL <br />AC-FT <br />5281. 07 <br /> <br />TP <br />HOURS <br />2.42 <br /> <br />PSQBA8LE <br />PI,IP <br />IIWEX <br />16.60 <br /> <br />CIIH ACTER IS TIC S <br />INT-LOS INF-RATE <br />INCIIES HICH/HR <br />0.00 1. 00 <br /> <br />VOLUME <br />RAIN <br />15.45 <br /> <br />IN IIICHES <br />LOSS EXCESS <br />8.56 6.88 <br /> <br />". <br /> <br />R lI'IOFF <br />....:f rr.1P <br />;:I/j -!l R <br />107,00 <br /> <br />>lHII,IU"1 <br />R 4[11 <br />F4CIOR <br />.27n <br /> <br />STOR~ PRECIPITATION 4~D <br />D15TRIRUT10~ II! PERC[~IT <br />~-IIR l?-ltR 1S-!IP <br />39,00 101.00 10",117 <br /> <br />---------------------------------------- L~~E I"Fl.OW HYOROGR~PII ORDINATES ----------------------------------------- <br />PROBABl.E ,,:,\XHIUH FLOOD IIYDRCGRAPH ,")'lDI/I\Ee 1" CFS AT 1.000 1I0UR IIITERVAl.S BEGUItIING AT ZERO TIME <br />0.0 0.0 0.0 0.0 ,1.0 n.D O.D 0.0 0.0 0.0 0.0 0.0 <br />0.0 158.9 '53?6.2 41895. 1 91~S..7 10S177.S 70352.6 52983.5 37778.0 23374.5 9729.5 14~7.~ <br />19 ~ . 5 0,. 0 0 . 0 D . 0 0 , 0 D. 0 O. 0 O. 0 O. 0 0 . 0 <br />-------------------------------------------- L~~E AnD DAM INFORMATION --------------------------------------------- <br />BEGIIWING OUTl.ET nOTTOM ~Pll.l.HAY ,~rll.l.',r,Y TOP OF DAM Tor OF OAH IIEIGIIT DOWNSTREAM N-VALVE COEF OF <br />POCL ELEV IIIVEn! OF LAr.E CRE"T CRE"T \110T!1 ELEVATION LEIIGTH OF DAM SLOPE ON OS FLOW <br />FT. MSL FT, flSL FT, flSL FT ,MSL FEET FT ,MSL FEET FEET OF DAM SLOPE OVE ROAM <br /> <br /> 6~DO.00 1j232.00 6230.00 ~~OD.OO 11 D. D 6420.00 938.0 190.0 IV ON 2.25H .033 2.80 <br /> ________________________ SUMMARY OF PLOCD ROUT I IIr.S OF INFLOW HYDROGRA~I THROUGH THE LAKE -------------------------- <br /> ROUTING PERCHT TOBL ~,\XlI-II1f'l DF.PJll OF ESTIMATED HI11IAL TOTAL VOLUME MAXHIUM <br /> NUI'1DER P~.IF I~IFLO'.4 LAKE L',Kf. OVER VELOCI1IES,' TIME TO TIME SPILLED DISCIIARGE <br /> 1 NF LO'. VOLUtIE ELEV". T ron TOP ()F 0.1\ ~.1 CREST TOE OVER TOP OVER DAM OVER DAM FROl1 DAM <br /> IIYDROGRAPII ,4C-FT FT,MSL FEET FPS FPS HOUR HOURS AC-FT CFS <br /> I 100.0 -35355. 6/123.111 P;.1JI 13.21 39.79 16.92 5.12 1~7~~.9 10090e.4 . <br /> 2 90.0 32719. 6421.1/ 7.11 12.36 36.72 17.04 11.78 11653. A 90107.0 <br /> , eo.r 2908'1. 611?5.99 5.':'] l'..1JI 33.12 17 .19 ~.36 8676.~ 79120.1 <br /> J <br /> 4 70.0 25411 r.. -:"~ ?II. B 1 ".nl 10.16 29.0~ 17.33 3.81 5856.7 63302.4 <br /> 5 60.0 2 I 8 13. 6Ll::n.5"l 3.S6 ~.7~ 24.23 17.66 3.09 3272.7 55630.4 <br /> 6 50.0 le177. 6'121.9" 1.9'1 6.45 16.e4 lA.06 2.08 1071. I 410611.0 <br />... 7 40.0 1115'12. 6" 10. 9'1 -1. Of) 0.00 0.00 0.00 0.00 0.0 27623.9 <br />S B 30:0 10900. 6'11 II. 94 -'1.0'; 0.00 0.00 0.00 0.00 0.0 195BO.~ <br />9 '20.0 72'" . 6'1 10. ~ 'I -9.5(1 0.00 0.00 0.00 0.00 0.0 11671.8 <br />to 10 10.0 ' '3635. 640'1. 8~ -i 5.16 0.00 0.00 0.00 0.00 0.0 4260.9 <br />t:l <br />I <br />'"" <br /> <br />[71 ~ ~. <br /> <br /> <br />- <br /> <br />!M II <br />
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