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<br />Table 2 (Continued) <br />Definitions for regulating approximate Zone A floodplains <br /> <br />Limited Development: Development involving parks, open space, golf courses, agriculture, bridges and <br />culverts that serve a single farm/home/cabin, pole barns, and individual single family structures. ' <br />Significant Development: All development that does not fall under one of the categones listed under the <br />Limited Development definition. A special case of significant development is a development that <br />involves more than 5 acres or more than 50 units (whichever is more restrictive). This special case is <br />important because federal regulations require that a detailed study be submitted to the community by the <br />developer, Failure of the community to require a detailed study will result in a violation ofthe National <br />Flood Insurance Program, which can have negative impacts on floodplain property owners within the <br />community. <br />Approximate hydraulics: Water surface elevations or flow depths computed for the location or reach of <br />interest using nonnal depth flow calculations (I.e. Manning's equation/slope-area method). Computer <br />programs such as QUICK-2 and FlowMaster are excellent tools for this purpose. <br />Detailed hydranlics: Water surface elevations (base flood elevations) computed for the stream reach of <br />interest using a step-backwater computer model, or other acceptable one-dimensional or two dimensional <br />computer model, such as HEC-2 or HEC-RAS, <br /> <br />;and <br /> <br />WHEREAS, the approximate floodplain delineations on said map with said new report for stream <br />reaches in the Town of Walden as listed in Table 1 meets the requirements for approximate <br />floodplain infonnation as listed in the Board's "Rules and Regulations for the Designation and <br />Approval of Floodplains and ofStonn or Floodwater Runoff Channels in Colorado" (2 CCR 408-1), <br />contingent upon the understanding by the Town of Walden of the need for a case-by-case review of <br />all development proposals within the corporate limits; and <br /> <br />DESIGNATION AND APPROVAL ACTION <br />NOW, THEREFORE, BE IT RESOLVED by the Colorado Water Conservation Board in <br />regular meeting assembled in Castle Rock, Colorado, this 29th day of March 1999, that it does <br />hereby designate and approve as approximate floodplain infonnation the stonn or floodwater runoff <br />channels and basins as listed in Table 1 and as described by approximate floodplain delineations on <br />said Flood Insurance Rate Map dated August 5, 1986, with included Floodplain Infonnation Report <br />dated February 1999 for the Town of Walden; and <br /> <br />BE IT FURTHER RESOLVED that the Secretary of the Board is directed to send a certified <br />copy of this resolution to the Town of Walden, Board of County Commissioners of Jackson County; <br />the Colorado Office of Emergency Management; and the Federal Emergency Management Agency. <br /> <br />3 <br />