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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 />Worksheet W-2 on page 16 was <br />hydrograph Qri at the end of <br />we have the ordinates of the <br /> = <br /> = 1/3 Qp = <br /> = 2/3 Qp = <br />Qpj = = Qp = <br /> = 2/3 Qp = <br /> = 1/3 Qp = <br /> = <br /> <br />used to compute the peak of the routed <br />the first typical reach. From the worksheet. <br />original failure hydrograph. <br /> <br /> <br /> <br />and the vector of routing constants. (Appendix 2) <br /> <br />ci = ~~ : g:~5l... <br />~3 = 0.2f <br /> <br />A complete routed hydrograph can be created by plotting the result of the <br />multiplication of vectors ci and Qpj. The individual routed hydrograph <br />coordinates are given by Qrij = L. ci Qpj. <br /> <br />For the example on WOrksheet W-2 these values are: <br /> Time 2ill. CFS <br /> 0.0 QrlO = C3Qpl = 0 <br /> 0.19 Qrll = C3Qp2 + C2Qpl = 1144 <br /> 0.38 Qr12 = C3Qp3 + C2Qp2 + CIQpl = 4576 <br /> 0.57 Qr13 = C3Qp4 + C2Qp3 + CIQp2 = 9152 <br /> 0.76 Qr14 = C3Qp5 + C2Qp4 + C1Qp3 = 11440 <br /> 0.96 Qr15 = C3Qp6 + C2Qp5 + C1Qp4 = 9152 <br /> 1.15 Qr16 = C3Qp7 + C2Qp6 + CIQp5 = 4576 <br /> 1.34 Qr17 = + C2Qp7 + CIQp6 = 1144 <br /> 1.53 Qr18 = + CIQp7 = 0 <br /> <br />13 <br />
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