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<br />28. "Storm or floodwater runoff channel" means a f1 oodp 1 a in. <br /> <br />29. "Significant change" means a change in a water surface <br />profile of 0.5 feet or more for a continuous distance of at <br />le'5t 500 feet, a change of floodplain bouncClry effectin9 5 <br />or ire acres. a change in flood ve,ocity of 2.0 feet per <br />seccnd or more at any cross- section, or a potential for <br />damage to property greater than $500 due to a change in <br />water surface elevations or velocities. <br /> <br />30. "Water surface profile" means a graph which shows the <br />relationship between the vertical elevation of the top of <br />flowing water and of the streambed with the horizontal <br />distance along the stream channel. <br /> <br />31. "Work map" means the document used during the hydraul ic <br />analysis which typically shows a greater level of detail or <br />information than the published or final flooded area map. <br /> <br />8. Terms Defined by Statutes. Any term used in these Floodplain <br />Designation 1nd Approval Rules that is not defined herein but <br />is defined ir Sections 37-60-101, 37-87-102, or 24-65.1-103, <br />C.R.S., is used with the meaning given therein. <br /> <br />-6- <br />