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• Civil Software Design -- SEDCAD+ Version 3.0 <br />Copyright (C) 1987-1990. Pamela J. Schwab. All rights reserved. <br />Filename <br />Storm: 1.60 <br />Company Name: Peabody Coal Company <br />C:\SEDCAD3\2W\TAHRD21 User: R <br />Date: 04-09-1990 Time: 10:13:23 <br />SENECA II-W TAHRD-21 (AS-BUILT) <br />inches, 10 year-24 hour, SCS Type II <br />Hydrograph Convolution Interval: 0.1 <br />J.GEHRKE <br />hr <br />----------------------------------------- <br />----------------------------------------- <br />NON-POND STRUCTURE INPUT/OUTPUT TABLE <br />----------------------------------------- <br />----------------------------------------- <br />J1, 81, S1 <br />TAHRD-21 (AS-BUILT) <br />Drainage Area from J1, B1, S1, SWS(s)1: 32 acres <br />Total Contributing Drainage Area: 32 acres <br />MATERIAL: GRADED SILTS TO COBBLES COLLOIDAL <br />Trapezoidal Earthen Channel <br />Limiting Variable: Velocity = 5.500 fps <br />Sediment-laden Water <br />Design <br />• Discharge <br />(cfs) <br />---19.75 <br />Depth <br />(fit) <br />0.43 <br />Bottom Manning's <br />Width ZLeft ZRight Slope n <br />(ft) (%) <br />--------------------------------------- <br />10.0 3.0:1 5.0:1 2.3 0.030 <br />Top Hydraulic Froude <br />Velocity Width Radius Number <br />(fps) (ft) <br />---3.90------13 b ------0.373------1.12 <br />Runoff Peak <br />Volume Discharge <br />(ac-ft) (cfs) <br />----------------------- <br />----------------------- <br />IN/OUT 1.86 19.75 <br />• <br />