FLOOD10341 ‎(2)‎

• County: Adams
• Community: Thornton
• Title: LOMR - Affected Panel 08001C0030 G - Case No. 01-08-353P
• Date: 9/25/2001
• Prepared For: Thornton
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

Federal Emergency Management Agency
Washington, D.C. 20472

CERTIFIED MAlL
RETURN RECEIPT REQUESTED

IN REPLY REFER TO:
Case No.: 01-08-353P

The Honorable Noel Busck
Mayor, City of Thornton
9500 Civic Center Drive
Thornton, CO 80229

Community: City of Thornton, CO
Community No.: 080007
Panel Affected: 08001C0030 G
E~ective. ~ate of 5 EP 2 5 2001
This ReVlSlon:

102-I-C

Dear Mayor Busck:

This responds to a request that the Federal Emergency Management Agency (FEMA) revise the
effective Flood Insurance Rate Map (FIRM) for Adams County, Colorado and Incorporated Areas (the
effective FIRM for your community), in accordance with Part 65 of the National Flood Insurance
Program (NFIP) regulations. In a letter dated August 7,2001, , P.E., Gillans, Inc.,
requested that FEMA revise the FIRM to show the effects of construction of The Haven at York
subdivision project along South Wadley Creek. The project included construction of a culvert at York
Street, realignment of South Wadley Creek, and channelization from its confluence with Big Dry Creek
to the Union Pacific Railroad. This request follows up on a Conditional Letter of Map Revision issued
on November 27,2000.

All data required to complete our review of this request were submitted with letters from"
l

We have completed our review of the submitted data and the flood data shown on the effective FIRM.
We have revised the FIRM to modifY the floodplain boundary delineations of the flood having a
I-percent chance of being equaled or exceeded in any given year (base flood) along South Wadley
Creek from Big Dry Creek to the Union Pacific Railroad. As a result of the modifications, the width of
the Special Flood Hazard Area (SFHA), the area that would be inundated by the base flood, for South
Wadley Creek increased in some areas and decreased in other areas. The base flood is contained within
the engineered channel along the revised reach. In addition, all increases in SFHA are contained within
a drainage easement owned by the City of Thornton. The modifications are shown on the enclosed
annotated copy of FIRM Panel 08001C0030 G. This Letter of Map Revision (LOMR) hereby revises
the above-referenced panel of the effective FIRM dated August 16,1995.

Because this revision request also affects the unincorporated areas of Adams County, a separate LOMR
for that community was issued on the same date as this LOMR.

The modifications are effective as of the date shown above. The map panel as listed above and as
modified by this letter will be used for all flood insurance policies and renewals issued for your
community.