FLOOD10562 ‎(2)‎

• County: Adams
• County: Jefferson
• Community: Westminster
• Stream Name: Big Dry Creek
• Title: LOMR - Affected Panel 0007 D - Case No. 98-08-298P
• Date: 6/22/1998
• Prepared For: Westminster
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE CITY
OF WESTMINSTER, JEFFERSON COUNTY, COLORADO, UNDER THE NATIONAL FLOOD
INSURANCE PROGRAM

On April 2, 1997, the Federal Emergency Management Agency identified Special Flood Hazard Areas
(SFHAs) in the City of Westminster, Jefferson County, Colorado, through issuance of a Flood Insurance
Rate Map (FIRM). The Mitigation Directorate has determined that modification of the elevations of the
flood having a I-percent chance of being equaled or exceeded in any given year (base flood) for certain
locations in this community is appropriate. The modified base flood elevations (BFEs) revise the FIRM
for the community.

The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public
Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII
of the Housing and Urban Development Act of 1968, Public Law 90-448),42 U.S.C. 4001-4128, and 44
CFR Part 65.

A hydraulic analysis was performed to incorporate placement of fill in the floodway fringe along the
western bank of Big Dry Creek from approximately 3,275 feet downstream to just downstream of West cliff
Parkway and has resulted in a decrease in SFHA width and increased BFEs for the revised reach of Big
Dry Creek. The table below indicates existing and modified BFEs for selected locations along the affected
lengths of the flooding source(s) cited above.

Location

Existing BFE
(feet) *

Modified BFE
(feet) *

Approximately 1,875 feet downstream of Westcliff Parkway
Approximately 735 feet downstream of Westcliff Parkway

5,301
5,304

5,302
5,305

*National Geodetic Vertical Datum, rounded to nearest whole foot

Under the above-mentioned Acts of 1968 and 1973, the Mitigation Directorate must develop criteria for
floodplain management. To participate in the National Flood Insurance Program (NFIP), the community
must use the modified BFEs to administer the floodplain management measures of the NFIP. These
modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new
buildings and their contents and for the second layer of insurance on existing buildings and contents.

Upon the second publication of notice of these changes in this newspaper, any person has 90 days in which
he or she can request, through the Chief Executive Officer of the community, that the Mitigation
Directorate reconsider the determination. Any request for reconsideration must be based on knowledge
of changed conditions or new scientific or technical data. All interested parties are on notice that until the
90-day period elapses, the Mitigation Directorate's determination to modify the BFEs may itself be
changed.

Any person having knowledge or wishing to comment on these changes should immediately notify:

The Honorable Nancy M. Heil
Mayor, City of Westminster
4800 West 92nd A venue
Westminster, Colorado 80030