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Last modified
7/14/2009 5:02:35 PM
Creation date
6/1/2009 11:53:44 AM
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Template:
UCREFRP
UCREFRP Catalog Number
9469
Author
Colorado Water Conservation Board.
Title
Floodplain Information Report\
USFW Year
1995.
Copyright Material
NO
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<br /> <br />~~ <br /> <br />~~ <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />methodologies used by state and federal agencies in performing detailed analyses, except that <br />there is no balancing of energy from one cross-section to the next. <br />The three surveyed cross-sections, the two surveyed cross-sections transferred to reaches other <br />than the reach where they were surveyed, and the three cross-sections that were hybrids of map <br />cross-sections and field data are graphically represented in Figures 7A-7H. Example rating <br />curves were prepared for the three field-surveyed cross-sections. They are presented in Plates <br />8-ll, after the floodplain maps. <br />4.5 Delineating Flood Boundaries <br />The calculated flood depths for the various stream reaches were first plotted on the quadrangle <br />maps at the cross-section locations. The resulting floodplain widths were compared to the <br />floodplain widths on the cross-section plots. The floodplain boundaries between the cross- <br />sections were then approximated by delineating flood depth contours and interpreting the <br />relationship between those flood depth contours and the ground contours. Consideration was <br />given to the slope within each reach. The finalized information was displayed on the USGS 7.5' <br />quadrangle maps (scale of 1" = 2,000'). A table identifying the quadrangle maps used in each <br />plate and the map scale is given in Figure 8. A map showing the location of each floodplain <br />map plate is shown in Figure 9, and the floodplain maps are shown in Plates 1-7. <br />17 <br /> <br />
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