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<br />. <br /> <br />2) ~n official designation action of the ~NCB (Section <br />and adoption by the local government. <br /> <br />STATUS OF FLOODPLAIN MAPPING IN COLORADO <br /> <br />There are 63 counties and 265 incorporated municipalities in <br />Colorado. Floodplain studies prepared without detailed engi- <br />neering data are available for all of those counties and 212 <br />municipalities. In some areas, no information is available, and <br />in other areas both studies have been performed. Detailed <br />studies include delineation of the 100-year floodplain in plan <br />view (see Glossary) and water surface elevations for the 100-year <br />flood and, in some cases, includes "plans of Improvements." <br /> <br />-10- <br /> <br /> <br />. <br /> <br />The fact that a detailed study has been performed in a given <br />county or municipality does not mean that all of the floodplains <br />in that community have been delineated. Many communities that <br />have had detailed floodplain studies performed still have a sub- <br />stantial number of stream miles of floodplain that have not been <br />studied in detail. Of approximately 6,000 miles of floodplains <br />in Colorado, about one-half have available detailed information <br />to guide appropriate development. The stream miles that have <br />been studied to this date have been studied by the Federal Emer- <br />gency Management Agency (FEMAl/Federal Insurance Administration, <br />the U.S. Army Corps of Engineers, the USDA Soil Conservation <br /> <br />. <br />