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Last modified
11/23/2009 10:50:44 AM
Creation date
10/4/2006 9:11:22 PM
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Floodplain Documents
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Statewide
Community
State
Stream Name
All
Title
Floodplain Designation and Approval
Date
12/11/1987
Prepared For
State of Colorado
Prepared By
CWCB
Floodplain - Doc Type
Miscellaneous
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<br />.c 1988 THE PUBLIC RECORD CORPORATION <br />ALL RIGIlTS RESERVEO <br /> <br />HeRl, 1-88 <br /> <br />Page 5 <br /> <br />20. "Hydrologic analysis" means the determina- tion of the <br />peak rate of flow, or discharge in cubic feet per second, <br />for various selected probabilities for streams, channels, <br />or basins based on a scientific analysis of the physical <br />process. <br /> <br />21. <br /> <br />"Hydraulic analysis" means the determination <br />elevations and velocities for various <br />probabilities based on a scientific analysis <br />movement and behavior of flood waters in channels <br /> <br />of fl ood <br />selected <br />of the <br />0)- basins. <br /> <br />22. "Levee" means a man.made structure, usually an earthen <br />embankment, designee and constructed in accordance with <br />sound engineering practices to contain, control, or divert <br />the flow of water so as to provide protection from flooding. <br /> <br />23. "lOO-year flood" means a flood which has a magnitude <br />(peak discharge) which is expected to be equaled or <br />exceeded on the average once during anyone-hundred year <br />periOd (recurrence interval) and has a one-percent chance <br />of being equaled or exceeded during any year (0.01 <br />exceedance probabil ity). The terms "one-hundred.year <br />flood, " "one percent chance fl oOd, " and "i ntermed i ate <br />regional flood" are synonymous with the term "lOO-year <br />flood. " <br /> <br />24. "lOO-year floodpla'in" means that area of land susceptible <br />to being inundated as a result of the occurrence of a <br />one-hundred-year flood. <br /> <br />25. .Precise" means accurate to within 0.5 foot vertically <br />or 5.0 feet horizontally. <br /> <br />" <br /> <br />. <br /> <br />protection system (including <br />construction, fees, overhead, <br />Board determines a given "cost" <br />project cost. <br /> <br />design, land acquisition, <br />and profits), unless the <br />not to be a part of such <br /> <br />27. "Rational Method" means an empirical method used to <br />determine the maximum rate of runoff based on the formula Q <br />- CIA, where Q is approximately equal to the peak rate of <br />flow in cubic feet per second, C is a runoff coefficient, I <br />is the average intensity of rainfall, and A is the <br />contributing basin area in acres. <br /> <br /> <br />THE CODE OF COLORADO REGULATIONS <br /> <br />2 CCR 408-1 <br />
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