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<br />. <br />- <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />. <br />. <br />I. <br />'. <br />- <br />. <br />. <br />:. <br />. <br />- <br />,. <br />. <br />. <br />. <br />. <br />- <br />. <br />- <br />. <br />. <br />. <br />. <br />I- <br />. <br />. <br />. <br />I. <br />. <br />. <br />. <br />I. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />approximate lOO-year flood elevation at a particular location on the river may be obtained by <br />using the lOO-year peak flow value (as provided in this report) in conjunction with an acceptable <br />hydraulic analysis. Hydraulic analyses for determining lOO-year water surface elevations for <br />approximate floodplains may be performed using FEMA's Quick-2 computer program, the Corps <br />of Engineers' HEC-2 computer program, Flowmaster, or other acceptable hydraulic methods. <br />Channel and floodplain cross-sections may be obtained from detailed topographic mapping or <br />from field surveys. Cross-sections obtained from USGS quadrangle maps are not advised. <br /> <br />Floodplain Mappinl! <br />The existing FHBM for Dove Creek depicts areas subject to lOO-year flooding based on <br />approximate technical methods. The map does not show flood profiles, base flood elevations, or <br />sufficient detail in order for County officials, engineers, developers, and land owners to make <br />floodplain determinations with any certainty. The Colorado Water Conservation Board can be <br />contacted to request technical assistance for approximate floodplain analyses as needed. <br /> <br />5 <br />