FLOOD01218

• County: Summit
• Community: Breckenridge
• Stream Name: Sawmill Gulch
• Title: LOMR - Affected Panel 0801720003 C - Case No. 04-08-0049P
• Date: 10/15/2004
• Prepared For: Breckenridge
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

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Federal Emergency Management Agency
Washington, D.C. 20472

JUN 15 200lt

CERTIFIED MAIL
RETURN RECEIPT REQUESTED

IN REPLY REFER TO:
Case No.: 04-08-0049P

The Honorable Sam Mamula
Mayor, Town of Breckenridge
150 Ski Hill Road,
Breckenridge, CO 80424

Community: Town of Breckenridge, CO
Community No.: 080172
Panel Affected: 0003 C
EffectiveDate of 0 CT 1 5 2004
This RevIsIOn: .

102-I-A-C

Dear Mayor Mamula:

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 October 24,2003, Mr. Richard A. Vrbanowski, P.E., Senior Water Resources
Engineer, Splash Engineering, requested that FEMA revise the FIRM and FIS report to show the effects of
. revised hydrologic and hydraulic analyses and more detailed topographic information for Sawmill Gulch
from its confluence with Blue River Middle Branch to the upstream corporate limits of the Town of
Breckenridge, located approximatelv 3.200 feet ul1stream of Four O'Clock RoaILa.distance.of
approximately l.l mile.

All data required to complete our review of this request were submitted as follows: Revised hydrologic
and hydraulic analyses were based on a restudy of the portion of Sawmill Gulch downstream of Four
O'Clock Road performed for FEMA by Foothills Engineering Consultants Inc., completed in April 2000.
Revised hydrologic and hydraulic analyses for the portion of Sawmill Gulch upstream of Four O'Clock
Road were submitted in support of a Conditional Letter of Map Revision that was issued on August 17,
1998 (Case No. 98-08-293R). In addition, revised hydraulic analyses were submitted by Mr. Vrbanowski
for this revision request in October 2003. Construction plans entitled "Ski Hill Road Construction,
Existing Conditions and Demolition Plan" that incorporated more detailed topographic information to
reflect existing Ski Hill culvert locations and conditions were submitted by Mr. Tom Daugherty, Assistant
Town Engineer, Town of Breckenridge, on April 27, 2004.

A portion of the reach of Sawmill Gulch affected by this revision is shown on the effective FIRM as a
Special Flood Hazard Area (SFHA), the area that would be inundated by the flood having a I-perecent
chance of being equaled or exceeded in any given year (base flood), designated Zone AE, with Base Flood
Elevations (BFEs) determined, based on a detailed analysis from the confluence with Blue River Middle
Branch to approximately 1,100 feet upstream of Four O'Clock Road. The remainder of the revised reach
is shown either as an SFHA designated Zone A, with no BFEs determined, or Zone X (unshaded), areas
outside the floodplain of the flood having a 0.2-perecent chance of being equaled or exceeded in any given
year.

We have completed our review of the suhmitted data and the flood data shown on the effective FIRM and
in the effective FIS report. We have revised the FIRM and FIS report to modifY the elevations, floodplain
boundary delineations, and zone designations of the base flood along the revised reach of Sawmill Gulch.
As a result of the modifications, the BFEs for Sawmill Gulch and the width of the SFHA increased in
some areas and decreased in other areas. The modifications are shown on the enclosed annotated copies of