1997-06-05_REVISION - M1981302 ‎(8)‎

• Permit No: M1981302
• IBM Index Class Name: Revision
• Doc Date: 6/5/1997
• Doc Name: PRE-HEARING STATEMENT OF CITY OF BOULDER
• Type & Sequence: AM2
• Media Type: D
• Archive: No

D. South Boulder Creek Flood Hazard Area Delineation, Prepared for Urban Drainage and
Flood Control District, Boulder County, by Greenhorne & O'Mara, Inc., July 1986.
Reflects the Deepe Farm Pit flood protection berm prior to mining as an existing low height
land feature. The 100 year floodplain boundary follows the perimeter of the land berm,
which removed most of the Deepe Farm Pit from the adopted regulatory floodplain. This
study was noted by Love and Associates as being incorrect in the vicinity of the Flatiron
property in that the land berm was not a FEMA approved flood protection levee. Love also
noted that this removed much of the Flatiron property from the floodplain in error.
E. National Flood Insurance Program, Flood Insurance Rate Map, City of Boulder, Colorado,
Boulder County, Community-Panel Number 080024 0185 D, Map Revised: August 4, 1988.
Reflects the Greenhorne& O'Mara 100 year floodplain limits at the Deepe Farm Pit which
removed the area behind the land berm from the adopted regulatory floodplain.
F. Foodplain Analysis of South Boulder Creek at the Flatiron Property in Boulder County,
Colorado, Prepared for: University of Colorado at Boulder, by Love and Associates, Inc., August
12, 1996.
Foodplain study performed as part of the "due diligence"investigation for the C.U. land
purchase of the Flatiron property. This study found the G&O FHAD to be in error by
removing the Flatiron property from the 100 year floodplain,found that significant flooding
was diverging away from South Boulder Creek and flowing into the Keewaydin Meadows
areas west and east of Foothills Parkway, and recommended that the Flatiron berm be
certified as a FEMA approved flood protection levee following additional improvements to
and analysis of the berm.
G. Evaluation of Certain Engineering Studies of South Boulder Creek, From Upstream of
Highway 93 to Downstream of South Boulder Road,Phase I, for Urban Drainage and Flood Control
District, the City of Boulder, the County of Boulder, by Taggart Engineering Associates, Inc.,
December 18, 1996.
First phase of a study commissioned by UDFCD, County, and City to review and compare
Love's study to the G&O FHAD used in the FIRM. Taggart founds that Love was correct
in identifving the South Boulder Creek flood spill and that the G&O study should be refined
to include these spills. The study developed an approximation of the areas impacted by the
spill and recommended that a collaborative effort by UDFCD, County, City, CU, CDOT,
Open Space and neighborhood was imperative to floodplain management issues in this area.
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