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Last modified
11/23/2009 12:58:08 PM
Creation date
10/4/2006 10:20:19 PM
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Template:
Floodplain Documents
County
Broomfield
Community
Broomfield
Title
Flood Insurance Study - City and County of Broomfield, CO
Date
11/25/2003
Prepared For
Broomfield
Prepared By
FEMA
Floodplain - Doc Type
Historic FEMA Regulatory Floodplain Information
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<br />Floodinq Source and Location <br /> <br />Airport Creek <br />At Confluence With Big Dry Creek <br />At Confluence With Tributary 1 <br />At Upstream Limit of Detailed Study <br /> <br />North Branch Airport Creek <br />At Confluence With Airport Creek <br />At Upstream Limit of Detailed Study <br /> <br />Rock Creek <br />At Confluence With Coal Creek <br />At Dillon Road <br />At Denver-Boulder Turnpike <br />At Downstream .Limit of Detailed Study <br />At Upstream Limit of Detailed Study <br /> <br />Big Dry Creek <br />At West 120th Avenue <br /> <br />f-' <br />C> <br /> <br />Gay Reservoir Channel <br />At Confluence With Big Dry Creek <br /> <br />Gay Reservoir Channel North Tributary <br />Above Confluence With City <br />Park Channel <br /> <br />City Park Channel <br />Upstream of Cross Section A <br /> <br />City Park Channel South Tributary <br />Above Confluence With City <br />Park Channel <br /> <br />Nissen Reservoir Channel <br />At Confluence With Big Dry Creek <br /> <br />West Lake Channel <br />At Confluence With Gay <br />Reservoir Channel <br /> <br />West Lake Channel North Tributary <br />Above Confluence With West <br />Lake Channel <br /> <br />'Data Not Available <br /> <br />Table 2. Summary <br /> <br />Drainage Area! <br />(Square Miles) <br /> <br />2.51 <br />1. 22 <br />0.43 <br /> <br />0.30 <br />0.03 <br /> <br />21. 6 <br />, <br /> <br />9.3 <br />, <br />, <br /> <br />43.54 <br /> <br />2.60 <br /> <br />5.68 <br /> <br />2.67 <br /> <br />0.74 <br /> <br />of Discharges <br /> <br />Peak Discharges (Cubic Feet per Second) <br />10-Year 50-Year 100-Year 500-Year <br /> <br />550 <br />370 <br />390 <br /> <br />100 <br />30 <br /> <br />2,870 <br />2,820 <br />1,256 <br />1,257 <br />1,140 <br /> <br />2,480 <br /> <br />915 <br /> <br />225 <br /> <br />770 <br /> <br />360 <br /> <br />1,860 <br /> <br />330 <br /> <br />280 <br /> <br />1,300 <br />760 <br />690 <br /> <br />230 <br />50 <br /> <br />5,350 <br />5,240 <br />3,230 <br />3,240 <br />3,090 <br /> <br />6,290 <br /> <br />1,525 <br /> <br />370 <br /> <br />1,300 <br /> <br />650 <br /> <br />3,150 <br /> <br />520 <br /> <br />415 <br /> <br />1,640 <br />920 <br />810 <br /> <br />280 <br />60 <br /> <br />6,690 <br />6,500 <br />4,520 <br />4,561 <br />4,123 <br /> <br />8,109 <br /> <br />1,820 <br /> <br />440 <br /> <br />1,550 <br /> <br />800 <br /> <br />3,400 <br /> <br />610 <br /> <br />470 <br /> <br />3,040 <br />1.540 <br />1,220 <br /> <br />510 <br />90 <br /> <br />10,240 <br />9,840 <br />10,050 <br />9,000 <br />8,864 <br /> <br />15,849 <br /> <br />2,650 <br /> <br />640 <br /> <br />2,250 <br /> <br />1.200 <br /> <br />5,600 <br /> <br />850 <br /> <br />630 <br />
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