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Wetted Perimeter: 11.76 <br />Area of Wetted Cross Section: 16.46 <br />Channel Slope: 2.0400 <br />Manning's n of Channel: 0.0425 <br />Discharge: 102.88 cfs <br />Depth of Flow: 2.40 feet <br />Velocity: 6.25 fps <br />Channel Lining: Excavated, Brush on Bank <br />Freeboard: 0.30 feet <br />Ditch D1 W crosses collection Ditch C27 in three locations, as shown on Map 2.05.3(3) -1. These <br />crossings are via Culverts 129 -133. See Map 2.05.3(3) -20 for Ditch D 1 W As Built. <br />DITCH D108 <br />Time of Concentration (SCS Method) <br />Curve Number: 78 <br />Length of Flow (ft): 2769.73 <br />Average Land Slope (percent): 6.4 <br />Time of Concentration (hrs): 0.50 <br />DITCH D108 <br />Graphical Peak Discharge <br />Project: NUCLA MINE By: GL Date: 02/17/06 <br />Location: DITCH D108 Checked: Date: <br />Developed <br />1. Data: <br />Revised June 2011 JR -60) Attachment 2.05.3(3) -1 -49 <br />