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Last modified
1/25/2010 6:46:53 PM
Creation date
10/5/2006 12:49:05 AM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Community
Boulder
Stream Name
South Boulder Creek
Basin
South Platte
Title
Floodplain Analyses of South Boulder Creek at Flatiron Property
Date
8/12/1996
Prepared For
University of Colorado at Boulder
Prepared By
Love & Associates, Inc.
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Mr. Mohr was also asked whether or not the University of Colorado would be considered <br />a state agency for purposes of operating and maintaining the levee once it has been <br />approved by FEMA. Mr. Mohr said that since the University maintains its own campus <br />facilities including utilities, roads, etc. that it would be considered eligible for the <br />operation and maintenance of the levee. <br /> <br />CONCLUSIONS <br /> <br />Following the review and re-analysis of the South Boulder Creek loo-year floodplain as <br />it affects the Flatiron Property we offer the following conclusions. <br /> <br />1. The FlS floodplain for South Boulder Creek in the vicinity of the Flatiron <br />Property is incorrect. The 19860&0 floodplain analysis assumed that the berm <br />surrounding the Property was either natural ground or a FEMA approved flood <br />protection levee neither of which is correct thus causing much of the Property to <br />be removed from the lOO-year floodplain in error. <br /> <br />2. The split flows from South Boulder Creek on the eastern and northern edges of <br />the Property in the 0&0 model are incorrect. In fact, approximately an <br />additional 1,000 cfs of flood waters spill to the north and west of the Property and <br />does not rejoin the South Boulder Creek floodplain north of US Highway 36 as <br />reported in the 0&0 study. <br /> <br />3. With a certified flood levee in place around the Flatiron Property, approximately <br />2,620 cfs of flood waters spill on to properties north of US 36. With no levee in <br />place, approximately 3,680 cfs of flood waters could spill onto properties north of <br />US 36. The majority of these flows cannot immediately return to the South <br />Boulder Creek floodplain due to ground elevations, development impacts <br />including the RTD Park-n-Ride and the construction of a sound barrier berm <br />along the western edge of Foothills Parkway which may not allow the water to <br /> <br />-23- <br />
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