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• <br />DES16N PARAMETERS <br />CULYERTS <br />Parameters <br />Area (Acres) - Disturbed <br />Area (Acres) - Undisturbed (B Type Soil) <br />Area (Acres - Undisturbed (C Type Soil) <br />Curve Number - Disturbed Area <br />Curve Number - Undisturbed Area (B Type Soil) <br />Curve Number - Undisturbed Area (C Type Soil) <br />Drainage Basin <br />Maximum Elevation <br />Minimum Elevation <br />Slope Adjustment Factor <br />Hydraulic Length <br />Precipitation <br />Frequency, Duration <br />(Inches) <br />• Culvert <br />Design Precipitation Event <br />Inlet Type <br />Shape <br />Calculation Method <br />Culvert Size <br />• <br />Actual <br />Actual <br />Actual <br />96 <br />78 <br />87 <br />Actual <br />Actual <br />Calculated <br />Actual <br />10-year, 24-hour <br />1.7 <br />10-year, 24-hour <br />Projecting, Headwall <br />Circular CMP <br />Nomograph; U.S. Bureau of <br />Public Roads <br />23-10 <br />