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FLOOD05372
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Last modified
1/25/2010 6:49:03 PM
Creation date
10/5/2006 1:29:11 AM
Metadata
Fields
Template:
Floodplain Documents
County
Pueblo
Community
Pueblo
Stream Name
Arkansas River
Basin
Arkansas
Title
City and County of Pueblo Flood Hazard Mitigation Plan
Date
8/1/1994
Prepared For
Pueblo
Prepared By
Pueblo
Floodplain - Doc Type
Flood Mitigation/Flood Warning/Watershed Restoration
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<br /> <br />Pueblo Flood H ozard Mit;l!at;on PUln <br /> <br />and through Pueblo, Many streams flow into <br />the Arkansas upstream of Pueblo, all of <br />which are fed primarily through snowmelt. <br /> <br />Pueblo Dam, on the Arkansas River, is part <br />of the Fryingpan-Arkansas Projeet. The dam <br />was designed in the 1960s to handle a 100- <br />year flood, and the construction was <br />completed in 1975, Although it has the <br />eapaeity to hold 357,000 acre feet of water, <br />the Corps of Engineers requires that the level <br />not exeeed 265,000 acre feet by April 15th <br />until the end of the flood season, to provide <br />sufficient eapacity for snowmelt and spring <br />rain, Also a part of Pueblo Dam's role in <br />flood eontrol is an agreement that the flow at <br />Pueblo Dam may be redueed so that by the <br />time the water reaches the Avondale gauge <br />(east of Pueblo), the flow will not exceed <br />6,000 cubic feet per second- which eould <br />potentially flood downstream towns and <br />agrieultural areas. At this gage the water is <br />not just eorning from the dam but from all <br />the previously mentioned tributaries of the <br />Arkansas, so the dam ean help reduee this <br />cumulative flow, <br /> <br />In review it is clear the Pueblo community is <br />aware they must be as prepared as possible <br />for the potential problem of flooding along <br />. <br />. \ ( ',' '-" <br /> <br />wf< <br /> <br />The Fryiogpan-Arkansas Water Project, taken from Soutbern <br />Colorado Water CODservsDe)' District 1993 Annual Report. <br /> <br />the many streams in the area, At the present <br />time, there are many different kinds of miti- <br />gation in place along these rivers, The <br />Arkansas River underwent ehannel improve- <br />ment and levee construction in 1922 <br />following the 1921 flood, Then in 1975 the <br />Pueblo Dam was eompleted, which helped <br />flood eontrol on the Arkansas River <br />downstream as well as upstream of the darn. <br />The Corps of Engineers authorized the <br />Fountain Creek Flood Control Projeet in <br />1986 and by 1990 portions of Fountain <br />Creek eonsisted of a levee system with a 200 <br />year flood design eomposed of eoncrete, rip <br />rap and/or a soil eement mixture. Pueblo also <br />relies on the Satellite Stream Gauging <br />Program under the administration of the <br />Offiee of the State Engineer, as well as the <br />Early Flood Warning System on Fountain <br />Creek. Aside from natural waterways, <br />Bessemer Ditch built concrete walls on <br />portions of the diteh in 1980 and on other <br />portions in 1990, The ditch runs from Pueblo <br />Dam through the city and east to its owners, <br />mostly farmers, on the St. Charles Mesa. <br />Some of these mitigative measures, ineluding <br />non-struetural measures, will be discussed <br />again later in this plan. <br /> <br />FRYINGPAN-ARKANSAS WAUR PROJECT <br />COLORADO <br /> <br />_ ~~T~~~~~~ y.~reQ <br />CONSERVANCY DISTRICT <br /> <br />-........s-,:,... <br />~......:....;>Y.>-.-'" <br />-;-~ <br />.~ <br /> <br />6 <br />
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