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FLOOD09347
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FLOOD09347
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Last modified
1/26/2010 10:08:56 AM
Creation date
10/5/2006 4:13:40 AM
Metadata
Fields
Template:
Floodplain Documents
County
Denver
Community
All
Stream Name
All
Basin
South Platte
Title
Nature's Building Codes: Geology and Construction in Colorado
Date
1/1/1979
Prepared For
State of Colorado
Prepared By
CGS
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br /> <br /> <br /> <br />These two photos of very similar small tributaries to the Big <br />Thompson ~Iver could almost be I'before and after" views. In <br />1976, one flooded, the other did not. If you were evaluating <br /> <br />Mountain Torrents <br /> <br />& Flash Floods <br /> <br />MOLJNTA I N T0i'l"EIHS and FLASH FLOODS are I oca I. sudden, and <br />sometimes catastrophic and short-I ived floods of l"elatlvely <br />great volume and velocity. They frequently occur in dry or <br />intermittent stream channels where they move Immense loads of <br />mud, rock fragments and other dabr I s. Ord j nar i I y, they ar-e <br />caused by brief but heavy rainfall over a relatively small, <br />steeply sloping drainage basin. t'-1ost small and steep-gradient <br />watersheds in Colorado Bre subject to flash floods. <br /> <br /> <br />a peaceful looking stream valley for a house site, would you <br />expect the violent flooding as evidenced in the photo which <br />can affect these smal I tributaries? <br /> <br />9 <br />
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