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FLOOD05779
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FLOOD05779
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Last modified
1/25/2010 6:50:11 PM
Creation date
10/5/2006 1:47:47 AM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Stream Name
South Boulder Creek
Basin
South Platte
Title
South Boulder Creek/ Flatirons
Date
12/5/1997
Prepared For
Boulder
Prepared By
Consultants
Floodplain - Doc Type
Community File
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<br />SEmEMENT <br /> <br />D;~. J\f''f<<...;'~ <br />. A,p..:". i. <br /> <br />1. <br /> <br />Anticipated potential settlement has been determined and incorporated into the specified construction <br />elevations to maintain the established freeboard margin. <br /> <br />2. <br /> <br />The computed range of settlement is <br /> <br />ft. to <br /> <br />Dyes 0 No <br /> <br />ft. (SEE 3 - OTHER <br />BELOW) <br /> <br />Settlement of the levee crest is determined to be primarily from: <br /> <br />o Foundation consolidation <br />o Embankmentcompression <br />l2! Other(clescribe) NOT APPLICABLE - THE LEVEE WILL BE RAISED FROM NIL TO MAXIMUM <br />ut"~.q. ~f::.t:.l IU t:.~I""tL.1~n rt'tc.E:. CUI"\n;U, [;;Iv1 IrII.! 1.3 140'1' .3UP'"FICII!NT <br />4. Differential settlement of floodwalls WEIGHT TO CAUSE ADDITIONAL SETTLEMENT OF THE EXISTING <br />YEARS OLD EMBANKMENT -. . _ <br />o has 0 has not been accommodated in the structural design and construction. <br />(NOT APPLICABLE) <br /> <br />Note: Attach engineering analysis to support construction plans. <br /> <br />3. <br /> <br />INTERIOR DRAINAGE <br /> <br />1. Specify size of each interior watershed <br />Draining to pressure conduit <br />Draining to ponding area <br /> <br />2. Relationships Established <br /> <br />ponding elevation vs. storage <br />Ponding elevation vs. gravity flow <br />Differential head vs. gravity flow <br /> <br />The river flow duration curve is enclosed <br /> <br />DYes 0 No <br />DYes 0 No <br />DYes 0 No <br /> <br />DYes 0 No <br /> <br />3. <br /> <br />4. Specify the discharge capacity of the head pressure conduit <br /> <br />. <br /> <br />S. Which Flooding Conditions Were Analyzed? <br />. . . -.. <br />.. · -Gr..vityflow(lnteriorWatershed,....:....-.-- ..--... .--~._~:O Yes 0 No-.-.~-'~'---:~o-,- <br />· .: Common storm (RiverWaiershed) ---;:::::~:.:.._.._-: .'-- .--- .; 0 Yes 0 No"~:':' ......... . .....- <br />· .,- Historical ponding probability .__~_":""::''':'''''''''::'-=.__.:.:'':'''''~-:'.o yes 0 No _-r..,-.. .""'.;-.-:- <br />. .-"'Co..stalwaveovertopping .'.' o Yes 0 !'I.o..______. <br />. .. __. _..... .__._<_._. .__. H .'_0___ ,------- ---- .- - -----. .- -- " _ <br />If no. explain why:.. ',' <br /> <br />.... I. ....... .... <br /> <br />6. <br /> <br />Interior drainage has been analyzed based on joint probability of interior and exterior flooding and the <br />capacities of pumping and outlet facilities to provide the established level of flood protection. <br /> <br />._ ...._..,.._..v,.__."......_... 0 Yes 0 No.. .......;.- ._,.. <br /> <br />If no. explain why: <br /> <br />'-:" ;;'~_.. <br /> <br />. ". . .. :.' '. '. . .. "'. ..,.. <br />7. . The rate of seepage through the levee system forthe'100.year flood is . 'NOT' A~~1CABLE* cfs <br />*NDT APPLICABLE BECAUSE FLoOO RISES AND FALLS IN LESS THAN (1). HOURS,THEREFORE, <br />TIME .IS NDT_.SUFFICIENT TO ESTABLiSH FLoW'THRClUGt-i l.EVEE"SYSTEM-;" ..-. ....-......~...._..__. <br /> <br />Leltee,'floodw,afl Syttem An.lyses Fo.", <br /> <br />MT.2 form a <br /> <br />P.g. 7 0" <br />
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