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Last modified
1/25/2010 6:27:22 PM
Creation date
10/4/2006 11:46:57 PM
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Template:
Floodplain Documents
County
Statewide
Community
State of Colorado
Basin
Statewide
Title
Procedure for Approximate Dam Failure Floodplain Mapping
Date
1/1/1988
Prepared For
Association of State Dam Safety Officials
Prepared By
John W. Van Sciver
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />SI\MPLE HAZARD2 OUTPUT: LOG LAKE OM <br /> <br />DA~I!\A~I: LOG LAKE 09-08-1988 <br />BEGIN DAM-BREAK COMPCTATION <br /> <br />HEIGHT= 24.00 <br />FREEBOARD= 3.00 <br />CREST WIDTH= 8.00 <br />RESERVOIR CAPACITY= 650.0 <br />EMBANKMENT SLOPES: U/S= 2.00:1 D/S= 1.50:1 <br />CREST LENGTH= 550.0 <br />SURFACE AREA= 75.0 <br />K1= 1. 50 <br />PRELIMINARY K2= 0.96 <br />FINAL K2=0.964 <br />K3= 1. 20 <br />EROSIVENESS K4=1.25 <br />K= 1. 89 <br />T= 1. 15 <br />QP= 13728 <br /> <br />**********REACH NO. 1 ********** <br />SECTION GEOMETRY <br />(FOR TRAPAZOIDAL SECTION) <br />BOTTOM WIDTH, B= 15.00 <br />CHANNEL SIDE SLOPES: LEFT= 2.00:1 RIGHT= 2.00:1 <br />CHANNEL BOTTOM SLOPE, S=0.00760 <br />*****CRITICAL DEPTH COMPUTATIONS***** <br />CRITICAL DEPTH=16.31 <br />CRITICAL VELOCITY= 17.7 <br />JARRETT'S N=0.043093 <br />*****SOLVING MANNING'S EQUATION***** <br />Q= 13731 D= 18.77 <br />VELOCITY= 13.92 <br />SCRVIVAL FACTOR IDEPTH*VELOCITY) = 261.3 <br />LE~GTH OF REACH NO. 1 = 10560 <br />TRA VEL TI~IE FOR REACH ~m. 1 = 0.21 <br />NUMBER OF ROUTING STEPS = 2 <br />ROCTED Q AT EXD OF REACH NO. 1 ,QR= 11440 <br />*****SOLVING ~ANNING'S EQUATION***** <br />Q= 11444 D= 17.33 <br />VELOCITY= 13.30 <br />SURVIVAL FACTOR (DEPTH*VELOCITYl = 230.5 <br /> <br />11-11 <br />
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