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