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Last modified
11/23/2009 12:39:54 PM
Creation date
5/18/2007 4:39:56 PM
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Template:
Floodplain Documents
County
Boulder
Community
Boulder County and Incorporated Areas
Title
FIS - Boulder County and Incorporated Areas - Vol 1
Date
10/4/2002
Prepared For
Boulder County
Prepared By
FEMA
Floodplain - Doc Type
Current FEMA Regulatory Floodplain Information
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<br />per Second) <br />SOD-Year <br /> <br />Summary of Discharges <br /> <br />Peak Discharges (Cubic Feet <br />lO-Year 50-Year lOO-Year <br /> <br />Table 4. <br /> <br />Drainage Area <br />Sauare Miles <br /> <br />Source and Location <br /> <br />Big Dry Creek <br />At West 120th Avenue <br /> <br />Floodin <br /> <br />12,000 <br /> <br />29,600 <br />23,000 <br />20,600 <br />4,770 <br /> <br />10,200 <br /> <br />14,400 <br />13,000 <br />8,000 <br />2,340 <br /> <br />8,700 <br /> <br />10,100 <br />9,200 <br />7,800 <br />1,560 <br /> <br />4,900 <br /> <br />3,650 <br />3,450 <br />2.200 <br />350 <br /> <br />2 <br /> <br />__1 <br />__1 <br />__1 <br />__1 <br /> <br />41 <br /> <br />Boulder Creek <br />At Confluence With <br />Fourmile Canyon Creek <br />At Valmont Drive <br />At 28th <br />At <br /> <br />Street <br />County Road <br /> <br />Bank Overflow) <br />of <br /> <br />54 <br /> <br />Boulder Creek (Right <br />Approximately <br />800 Feet Upstream <br />Foothills Parkway <br /> <br />11,469 <br /> <br />2,523 <br /> <br />609 <br /> <br />1 <br /> <br />1 <br /> <br />--1 <br /> <br />South Boulder Creek <br />At Confluence With Boulder- Creek <br /> <br />w <br />00 <br /> <br />11,500 <br /> <br />6,630 <br /> <br />4,980 <br /> <br />2,060 <br /> <br />132.0 <br /> <br />Brandywine Creek <br />Confluence With <br />Nissen Reservoir Channel <br /> <br />489 <br /> <br />6,109 <br />6,275 <br />3,474 <br /> <br />1 <br />1 <br /> <br />,811 <br />251 <br /> <br />262 <br /> <br />4,532 <br />4,772 <br />2.639 <br /> <br />1 <br /> <br />333 <br /> <br />760 <br />774 <br /> <br />211 <br /> <br />300 <br /> <br />970 <br /> <br />532 <br />575 <br /> <br />1 <br /> <br />88 <br /> <br />1,421 <br />1.474 <br />683 <br /> <br />374 <br /> <br />190 <br />294 <br /> <br />0.42 <br /> <br />8.85 <br />8.16 <br />0.06 <br /> <br />2.14 <br /> <br />1.59 <br />0.64 <br /> <br />Bullhead Gulch <br />Upstream Boulder Creek <br />Downstream Prince Tributary <br />Upstream. Prince Tributary <br />Downstream Indian Peaks <br />Conf~uence <br />Upstream Indian Peaks <br />Conf1uence <br />At upstream Limit of Detailed <br />Study <br /> <br />1.041 <br /> <br />Available <br /> <br />--lData Not <br />
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