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FLOOD02803
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Last modified
1/25/2010 6:25:31 PM
Creation date
10/4/2006 11:11:57 PM
Metadata
Fields
Template:
Floodplain Documents
County
Weld
Community
Windsor, Laku Landing
Stream Name
Cache La Poudre River
Basin
South Platte
Title
HEC-2 Study of Laku Landing
Date
2/4/1992
Prepared For
Laku Landing
Prepared By
CWCB
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />Hydraulic Analysis of Proposed Conditions <br /> <br />8 <br /> <br />. <br /> <br />--pi-ou """'EXut''eJ~]te,. _YropO$~~ VVater l;i{&uhng l:'_ropol1ed <br />Section Surface levahon Surface Elevation Difference Velocity Velocity Differenu <br />129630 4-758.3 4- 758.3 0 .,9 ..9 0 <br />130980 4759.9 4759.9 0 6,' 6.' 0 <br />132030 4761.8 4761.8 0 1.6 1.6 0 <br />133900 .763.. .7..,. 0 9.1 9,1 0 <br />136450 .767.. 4767,4 0 1.6 1.6 0 <br />139690 4769.9 4769.9 0 ',7 ... 0,7 <br />145760 -/774,9 4774.9 0 1,6 1.6 0 <br />147200 4777,4 4777,4 0 8,9 8.9 0 <br />148950 .780,4 4- 780.4 0 6,' 6.' 0 <br />148960 4780.6 4780,6 0 5,0 5.0 0 <br />149580 4781.3 4781.3 0 '.9 ',9 0 <br />151100 4-782.9 4782.9 0 7.0 7,0 0 <br />152250 4- 785.2 4- 785.2 0 7.' 7.' 0 <br />152300 ..1.785.5 4785.5 0 6.. 6.. 0 <br />152340 _1.787.5 4787.5 0 '.1 '.1 0 <br />152390 787.5 787.5 0 '.1 ',1 0 <br /> <br />Table 2. Modified Roughness and Spectator Area Simulation Summary <br /> <br /> .,'" <br /> .,,, <br />. .,'" <br />! .,,, <br />. <br />; <br />. <br /> '"" <br /> .76S <br /> .,'" <br /> 1.00 <br /> <br />Loku........ <br />PropoooM Conditi0n5(modified roup-od ~_) <br />~13!/i69OJXJJ <br />,." <br /> <br />.,"'" <br /> <br /> <br />1179..50 <br /> <br />235800 <br />"'"'- <br /> <br />",.., <br /> <br />4115.00 <br /> <br />Figure 6. Proposed Conditions Due to Modified Roughness and Spectator Area <br /> <br />The fill material used to construct the spectator area will be compacted as it is placed for <br />maximum stability. BecauI;e of the abundance of Nunn Clay Loam and gravelly substratum,lthe <br />spectator area will be resisl;ant to the hydrodynamic forces of flooding, while capable of good root <br />penetration from the grass to be grown on it. <br /> <br />The type of grass to be planted on the spectator area has been chosen based on the recommen- <br /> <br />. <br /> <br />Soil Survey of Weld County, Colorado, Southern Part performed and compiled by the U.S. Department of Agriculture Soil Conser- <br /> <br />vation Service in cooperation with the Colorado Agricultural Experiment Station. <br />
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