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Last modified
1/26/2010 10:08:13 AM
Creation date
10/5/2006 4:07:12 AM
Metadata
Fields
Template:
Floodplain Documents
Designation Number
24
County
Boulder
Community
Unincorporated Boulder County
Stream Name
Lower Saint Vrain Creek
Basin
South Platte
Title
Floodplain Information Report - Lower Saint Vrain Creek - Volume III
Date
6/1/1972
Designation Date
7/1/1993
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />consisting largely of pQsture land, some cultivated acres, and occa- <br />sio",,1 IMm buildirY.Js. The St,}ndard Project Flood in thi~ Same reach <br />would average 4,300 feet wide, would flood many more cultivated fields, <br />andpartlallv inundatetnal1IJrllnqtonNortherntrilcksonthelcftbank. <br />At Lonqmont there Is mucn less contrast In flood widths between the <br />I nter",..d iatl.l Aegional artd Standard Project Floods. 8othootentl31 <br />floodswouldcausegreatdama$letoresidentl.al,cO"lrnerclal, and indus- <br />trial areas, streets, railroad grades, oridges, and utilities. Oo"n- <br />stre3m from Longmant In the study reach much cultivated land would be <br />flooded, mostly on the rl>)ht oank. All vehicular traffic across the <br />floodolalnwouldbestoppedforthedurationofthelloodinq. In <br />addition to losses In the flood plain the ontire community would suffor <br />due to loss 01 ouslness, cost of ernergencyrellef measures, endreoalrs <br />tostreets,t>rld<)es,dndutllitios. Th<lfollowinqohotogr"rhsillus- <br />-rrat€l flood depthsdlJring large potential floods at seiected iocatlons, <br /> <br />I <br /> <br />- <br /> <br />I <br /> <br /> <br />I <br />,df,__"'; <br /> <br />Future Flood Heights <br />Figure 14. (Above) $outhPratt $treet, about 500 feet sovth of <br />orldge. <br /> <br />figure IS. (Below) J:lst North of St. Vrain Creek at $outh Pr<ltt <br />Street,looklnge<lst. <br /> <br />~~. <br />. <br /> <br /> <br />-f' <br /> <br /> <br />FlJtureFloodfleights <br /> <br />Figur~ 15. boSTon Avenue ;usT e~ST Of bridge. <br /> <br />22 <br /> <br />21 <br />
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