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Structure #3 (Erodible Channel) <br /> Southeast Natural Channel <br /> Parabolic Erodible Channel Inputs: <br />Material: Stiff clay very colloidal <br />Slope (%) Manning's n <br />Freeboard <br />Depth (ft) <br />Freeboard <br />% of Depth <br />Freeboard <br />Mult. x <br />(VxD) <br />Limiting <br />Velocity <br />(fps) <br />10.0 0.0250 5.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 19.90 cfs <br />Depth: 0.81 ft <br />Top Width: 3.25 ft <br />Velocity: 11.30 fps <br />X-Section Area: 1.76 sq ft <br />Hydraulic Radius: 0.464 ft <br />Froude Number: 2.71 <br />Structure #2 (Pond) <br /> Coal Stockpile Pond <br /> Pond Inputs: <br />Initial Pool Elev: 7,211.00 ft <br />Initial Pool: 0.82 ac-ft <br />Emergency Spillway <br />Spillway Elev Crest Length <br />(ft) <br />Left <br />Sideslope <br />Right <br />Sideslope <br />Bottom <br />Width (ft) <br />7,217.00 25.00 3.00:1 3.00:1 20.00 <br /> Pond Results: <br />Peak Elevation: 7,216.99 ft <br />Dewater Time: 0.00 days <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation-Capacity-Discharge Table <br />Filename: Exhibit 7 Item 23 Part M 100-Yr 24-Hr Coal Pond.sc4 Printed 03-16-2022 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 9