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Last modified
11/23/2009 10:50:44 AM
Creation date
10/4/2006 9:11:22 PM
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Floodplain Documents
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Statewide
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Stream Name
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Title
Floodplain Designation and Approval
Date
12/11/1987
Prepared For
State of Colorado
Prepared By
CWCB
Floodplain - Doc Type
Miscellaneous
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<br />,r 1988 THE PUBLIC RECORD CORPORATION <br />ALL RIGHTS RESERVED <br /> <br />llCR L 1-88 <br /> <br />Page 15 <br /> <br />match the contiguous study exactly. Where elevati~ns <br />cannot be reconciled to within fO.5 foot because of changed <br />flooding conditions or an error in the previous analysis, a <br />full explanation and justification for the difference shall <br />be provided to the Board. <br /> <br />D. Published Report and Map <br /> <br />1. ReDorts. The results of the hydrologic and hydraulic <br />analyses, as developed in accordance with rules 5B and 5C, <br />shall be summarized in a published report. All detailed <br />floodplain information which is presented to the Board for <br />designation and approval shall be entitled, dated, and <br />bound in an individual document. <br /> <br />2. Flooded Area MaDs <br /> <br />a. The publ ished flooded area maps shall show, at a <br />minimum, the flood boundaries in accordance with rule <br />5C2, the location of all cross sections used in the <br />hydraulic analysis and/or a reference line drawn down <br />the center of the low flow channel, and a sufficient <br />number of flood contours in order to reconstruct the <br />flood water surface profiles to an accuracy of fO.5 <br />foot. Flood contours shall be shown as wavy lines <br />drawn normal to the direction of flow of floodwater and <br />shall extend completely across the area of the <br />laO-year floodplai'n. Each flood contour shall indicate <br />its elevation to the nearest whole foot. <br /> <br />b. Published HaD Scale. The published flooded area map <br />scale shall be 1 inch equals 1000 feet or such map <br />scale showing greater detail. The Board recommends a <br />pu 1 <br /> <br />3. DiscreDancies. Where discrepancies appear between <br />flooded area maps and water surface profiles, any lOO-year <br />water surface profile designated by the Board shall take <br />precedence over any corresponding flooded area map for the <br />same stream reach. <br /> <br />~ <br /> <br /> <br />THE CODE OF COLORADO REGULATIONS <br /> <br />2 CCR 408.1 <br />
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