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PROJ00462
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PROJ00462
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Last modified
11/19/2009 11:43:26 AM
Creation date
10/5/2006 11:56:20 PM
Metadata
Fields
Template:
Loan Projects
Contract/PO #
FS0036X
Contractor Name
Idaho Springs, City of
Contract Type
Loan
Water District
0
County
Clear Creek
Loan Projects - Doc Type
Feasibility Study
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<br />Table 5, Page 67 for CN = 75 <br /> <br />T'j = 1.2 <br />c Tc <br /> <br />, = <br /> <br />0.61hrs <br /> <br />: <br /> <br />Specific Type Floods <br /> <br />Floods from design thunderstorm rainfall <br /> <br />(a) Inflow design flood, probable maximum thunderstorm <br />rainfall. <br /> <br />(1) <br /> <br />(2) <br /> <br />Obtain probable maximum I-hour point precipitation <br />for area west of 1050 meridian from Figure 20, Page 53: <br />12 inches <br /> <br />Apply area reduction ratio to obtain basin I-hour <br />rain. From Figure 21, Page 54 thunderstorm: Conversion <br />ratio from I-hour point rainwll to I-hour area <br />rainfall for area west of 105 meridian. (Zone 1lI) <br /> <br />Ratio = area rainfall ~ point rainfall <br /> <br />O. 93 = area rainfall :; 12 <br /> <br />Area rainfall = 11. 16 inches <br /> <br />(3) List accumulative basin rain at each IS-minute <br />interval for duration of thunderstorm <br /> <br />2, Page 52: <br /> <br />lUteS) <br /> <br />Zone III (% of I-hr value) <br /> <br />Probable maximum thunderstorm <br />point rainfall in inches <br /> <br />48 <br />71 <br />88 <br />100 <br />110 <br />117 <br />122 <br />126 <br />129 <br />131.5 <br />133 <br />134 <br /> <br />5,36 <br />7.92 <br />9.82 <br />11.16 <br />12.28 <br />13.06 <br />13.62 <br />14.06 <br />14.40 <br />14.68 <br />14.84 <br />14.95 <br /> <br />- 8 - <br /> <br />1 <br /> <br />1 <br />, <br />I <br /> <br />. .~" ,^ <br /> <br />"".;. <br /> <br />..1, . <br /> <br />'" . <br /> <br /> <br />,~~ . , j '< <br /> <br />"","., <br /> <br />,.,' . ,,- <br />
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