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<br />d. Erosion zones and stream migration problems as determined on a case-by-case basis, <br />either at the request of the sponsoring local government or by Board initiative, within <br />stream reaches where these problems are anticipated or known to occur. <br /> <br />K. Published reports and maps. The results of the hydrologic analyses, hydraulic analyses, and <br />floodplain delineations shall be summarized in a published floodplain study report and <br />submitted to the CWCB. All approximate and detailed floodplain information that is presented <br />to the CWCB for designation and approval shall be properly titled, dated, organized, and bound <br />as a stand-alone document. In addition to the hard copy final report, the CWCB requires that a <br />digital copy of the final report be submitted in MS Word and PDF formats. All pertinent <br />technical backup data such as GIS files, hydrologic and hydraulic models, and all pertinent <br />technical backup data shall also be provided to the CWCB in acceptable digital formats. The <br />CWCB shall electronically distribute to interested parties, to the extent possible, pertinent study <br />information. Access to original GIS information will be provided to local governments and <br />other authorized users through a secure and protected website or other secure means. <br /> <br />a. The published flooded area maps shall show, at a minimum, the flood boundaries, the <br />location of all cross sections used in the hydraulic analysis, the reference line drawn <br />down the center of the floodplain or low flow channel, and a sufficient number of flood <br />contours in order to reconstruct the flood water surface profiles. <br />b. Flood contours, also referred to as Base Flood Elevations, shall be shown as wavy lines <br />drawn normal to the direction of flow of floodwater and shall extend completely across <br />the area of the 100-year floodplain. Each flood contour shall indicate its elevation to <br />the nearest whole foot. <br />c. The published flooded area map scale shall be I-inch equals 500 feet or such map scale <br />showing greater detail. FEMA map panels rnay also be published at I inch equals 500 <br />feet, I inch equals 1,000 feet, or I inch equals 2000 feet. <br />d. Where discrepancies appear between flooded area maps and water surface profiles, any <br />100-year water surface profile designated and approved by the Board shall take <br />precedence over any corresponding flooded area map for the same stream reach or site <br />location. <br /> <br />L. Contractor Qualifications <br />a. A qualified Colorado registered professional engineer in good standing shall direct or <br />supervise the floodplain mapping studies and projects within the regulatory floodplain. <br />All floodplain maps, reports and project designs within the regulatory floodplain shall <br />be certified and sealed by the Colorado registered professional engineer of record. <br />b. Federal agencies or other recognized and qualified government authorities may produce <br />floodplain mapping work as a study proponent or on behalf of a study proponent. <br /> <br />Rule 7. Standards for Rel!ulatorv Floodwavs: <br /> <br />A. Designation of tloodways. Designation and approval of tloodways shall be considered as part <br />of the designation and approval of corresponding I OO-year regulatory floodplains. For <br />waterways with base flood elevations for which floodways are not computed, the community <br />shall have the discretion to apply floodway regulations according to its own determination, as <br />outlined in 44 CFR 60.3( c)(1 0) hereby incorporated by reference. <br /> <br />13 <br />