FLOOD10751 ‎(2)‎

• County: Weld
• Community: Windsor
• Stream Name: Cache La Poudre River
• Title: LOMR - Affected Panel 0005 A - Case No. 04-08-0430P
• Date: 3/4/2005
• Prepared For: Windsor
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

Federal Emergency Management Agency
Washington, D.C. 20472
NOV 0 9 200ft

CERTIFIED MAIL
RETURN RECEIPT REQUESTED

IN REPLY REFER TO:
Case No.: 04-08-0430P

The Honorable Edward Starck
Mayor, TO"ffi of Windsor
301 Walnut Street
Windsor, CO 80550

Community: Town of Windsor, CO
Community No.: 080264
Panel Affected: 0005 A
Effective Date of MAR 0 J. 2005
This Revision: ,

102-I-A-C

Dear Mayor Starck:

This responds to a request that the Department of Homeland Security's Federal Emergency Management
Agency (FEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS)
report for your community in accordance with Part 65 of the National Flood Insurance Program (NFIP)
regulations. In a letter dated April 6, 2004, Mr. Chris J. Pauley, P.E., Senior Engineer, Anderson
Consulting Engineers, Inc., requested that FEMA revise the FIRM and FIS report to show the effects of
placement offill associated with construction of the Water Valley Development Project, new topographic
information" and revised floodway encroachments along the Cache La Poudre River from just upstream of
State Highway 257 (SH257) to approximately 1,000 feet upstream of Weld County Road 17 (WCRI7) and
along the County Road 17 and State Highway 257 Divided Flows from just downstream of SH257 to just
upstream ofWCRI7. Although a portion of the revised reach is shown on the effective FIRM for the
unincorporated areas of Weld County, the revised areas were annexed by the Town of Windsor; therefore
those areas will no longer be shown on the Weld County FIRM. This request follows up on a Conditional
Letter of Map Revision issued on June 29,1998.

All data required to complete our review of this request were submitted with letters from Mr. Pauley.

We have completed our review of the submitted data and the flood data shown on the effective FIRM and
in the effectJlve FIS report. We have revised the FIRM and FIS report to modify the elevations, floodplain
and floodway boundary delineations, and zone designations of the flood having a I-percent chance of
being equaled or exceeded in any given year (base flood) along the Cache La Poudre River and the County
Road 17 and State Highway 257 Divided Flows. As a result of the modifications, the flooding caused by
the two Divided Flows have been combined into one single divided flowpath named WCR17 - SH257
Divided Flow. Also as a result of the modifications, the Base Flood Elevations (BFEs) for the Cache La
Poudre River and the Divided Flows and the widths of the Special Flood Hazard Areas (SFHAs), the areas
that would be inundated by the base flood, and the regulatory floodways increased in some areas and
decreased in other areas. The modifications are shown on the enclosed annotated copies of FIRM
Panel 0005 A; Profile Panels 01P, 02P, 04P, 05P, and 06P; and affected portions of the Floodway Data
Table. This Letter of Map Revision (LOMR) hereby revises the above-referenced panel of the effective
FIRM and the affected portions of the FIS report, both dated September 27, 1991.

Because this revision request also affects the unincorporated areas of Weld 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 listed above and as modified
by this letter will be used for all flood insurance policies and renewals issued for your community.