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Last modified
1/25/2010 7:08:52 PM
Creation date
10/5/2006 2:13:36 AM
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Template:
Floodplain Documents
County
Statewide
Community
State of Colorado
Basin
Statewide
Title
Urban Storm Runoff Inlet Hydrograph Study - Volume 4
Date
5/1/1975
Prepared By
Cheng-lung Chen
Floodplain - Doc Type
Flood Mitigation/Flood Warning/Watershed Restoration
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<br />a,b,c = <br />,\""c, = <br />C = <br />F = <br /> = <br />k <br />n = <br />I1.y = <br />I1.yl = <br />"n = <br /> <br />R <br />Rl~l= <br /> <br />Rl~24= <br />R1oo, 1= <br /> <br />r = <br />ri = <br />ray = <br />ro = <br />r. = <br /> j = <br />ray r1i.d= <br />rT,! = <br />av <br />rW,ld = <br />av <br />r1oo,I(\= <br /> av <br /> <br />LIST OF ABBREVIATIONS AND SYMBOLS <br /> <br />storm parameters <br /> <br />standard storm parameters describing the Tr-!tioS of various-duration intensities to 1- <br />hour intensity for the same frequency <br /> <br />coefficient <br /> <br />frequency <br /> <br />counter for data points <br /> <br />coefficient <br /> <br />exponent; number of total data points <br /> <br />number of data points before peak intensity for positive b <br /> <br />number of measured data points before the constant rate around the peak zone <br />for negative b <br /> <br />number of measured data points after the constant rate around the peak zone <br />for negative b <br /> <br />= <br /> <br />rainfall depth in inches <br /> <br />lO-year I-hour rainfall depth in inches <br /> <br />10-year 24.hour rainfall depth in inches <br /> <br />100-year I-hour rainfall depth in inches <br /> <br />rainfall intensity in inches per hour at any time in the synthetic storm <br /> <br />j-th data point for rainfall intensity in inches per hour <br /> <br />average rainfall intensity in inches per hour <br /> <br />normalizing (reference) rainfall intensity <br /> <br />normalized rainfall intensity <br /> <br />j-th data point for average rainfall intensity <br />T -year td -hour (or minute) average rainfall intensity in inches per hour <br /> <br />T-year I-hour average rainfall intensity in inches per hour <br /> <br />IO-year td-hour (or minute) average rainfall intensity in inches per hour <br /> <br /> <br />I OO-year td.hour (or minute) average rainfall intensity in inches per hour <br /> <br />xiii <br />
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