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<br />.. <br /> <br />Introrluction <br /> <br />. <br /> <br />. <br /> <br /> <br />Section 37-60-106, CRS 1973 authorizes the Colorado Water <br /> <br />Conservation Board "to designate and approve storm or floodwater <br />I <br /> <br />channels or basins, and to make such designations available to <br /> <br />legislative bodies of cities and incorporated towns, to county <br /> <br />planning commissions, and to boards of adjustment of cities, <br /> <br />incorporated towns, and counties of the state." <br /> <br />The Colorado Water Conservation Board by resolution designates <br /> <br />and approves as flood hazard areas those areas described in a flood <br /> <br />hazard report as being inundated by an intermediate regional <br /> <br />QOO-year) flood after those areas have been identified by a detailed <br /> <br />engineering study. <br /> <br />The following requirements describe the minimum data and <br /> <br />information required for a detailed engineering study and the mini- <br /> <br />mum supporting data~submitted to the cweB for approval and desig- <br />-/- 0 ,,"- <br /> <br />nation. <br /> <br />In order to meet these requirements the dEl:ailed engineering <br /> <br />study must include the following items: <br /> <br />Field Investigation <br /> <br />Field Surveys and Mapping <br /> <br />Flood History <br /> <br />Hydrologic ^nalysis <br /> <br />Hydraulic l\ni:llysis <br /> <br />The results of the detailed engineering study must be presented <br /> <br />in a floodplain information report and the technical aspects of the <br /> <br />study must be detailed in a technical addendum. <br /> <br />During the course of the study close coordination must be <br />