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FLOOD10387 (2)
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FLOOD10387 (2)
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Last modified
11/23/2009 10:24:43 AM
Creation date
7/24/2007 4:21:27 PM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Stream Name
Yampa River
Title
Floodplain Information Report - Volume 1 - Yampa River from Craig to Dinosaur National Monument
Date
5/1/1995
Prepared For
Recovery Implementation Program for Endangered Fish Species in the Upper Colo
Prepared By
CWCB
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Snowmelt flooding is characterized by moderate peak flows, large volume of runoff, long <br />duration, and diurnal fluctuation of flow. Flooding from general rainfall alone, though <br />uncommon on the Yampa River, is characterized by high peak flows and moderate duration of <br />floodflows. Ice jams can occur at bridge crossings and channel constrictions where flooding can <br />occur from otherwise non-damaging flows in areas ordinarily only affected by much higher flows. <br />The jams can reduce channel capacity so much that the small flows cause significant flooding. <br />Additionally, ice jams can release stored water without warning when the jams fail, causing a <br />destructive wave to move downstream. ,Rain on snowmelt floods result from the augmentation <br />of already high snowmelt flow volumes by the added runoff of rainfall. These types of floods <br />can be characterized by the already moderate peak flows of snowmelt floods followed abruptly <br />by a short duration high flow. <br /> <br />8 <br />
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