FLOOD03045

• County: Jefferson
• Community: Lakewood
• Stream Name: Addenbrooke Pond & South Lakewood Gulch
• Basin: South Platte
• Title: LOMR - Affected Panel 085075 0005 C - Case No. 96-08-176P
• Date: 8/8/1996
• Prepared For: Lakewood
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

!

'~
(

Federal Emergency Management Agency
Washington, D.C. 20472

CERTIFIED MAIL
RETURN RECEIPT REQUESTED

IN REPLY REFER TO:
Case No.: 96-08-I76P

The Honorable Linda Morton
Mayor, City of Lakewood
445 South Allison Parkway
Lakewood, Colorado 80226-3105

Community: City of Lakewood, Colorado
Community No,: 085075
Panel Affected: 0005 C
Effective Date of
This Revision: AU G 0 8 1996

102-I-A-C

Dear Mayor Morton:

This responds to a request for a revision to the National Flood Insurance Program (NFIP) map for your
community, Specifically, this responds to a letter dated June 26, 1996, from Ms, Toni Spurgeon, Engineering
Development Review, Public Works Department, Engineering Division, City of Lakewood, regarding the
effective Flood Insurance Rate Map (FIRM) for the City of Lakewood, Colorado, With her letter,
Ms. Spurgeon provided additional information to support her March 13, 1996, request for a Letter of Map
Revision (LOMR), Ms. Spurgeon requested that the Federal Emergency Management Agency (FEMA) revise
the effective FIRM to show the effects of improvements to Addenbrooke Pond and construction of an
underground pipe along South Lakewood Gulch upstream of Garrison Street

All data required to complete our review of this request were submitted with Ms. Spurgeon's March 13 and
June 26 letters, Because this LOMR shows the effects of a publicly sponsored flood-control project that
reduces flooding to existing development, fees were not assessed for the review,

We have completed oUr review of the submitted data and the flood data shown on the effective FIRM, and
have revised the FIRM to modify the elevations, floodplain 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 South
Lakewood Gulch from approximately 800 feet downstream of Alameda Avenue to approximately 200 feet
upstream of Kipling Parkway.

As a result of the project the width of the Special Flood Hazard Area (SFHA), the area inundated by the base
flood, decreased from just upstream of Alameda Avenue to just downstream of Garrison Street. The
maximum decrease in SFHA width, approximately 150 feet, occurred just downstream of Garrison Street
The base flood is contained in an 18-inch reinforced concrete pipe from Garrison Street to Addenbrooke Pond,
The base flood is also contained in Addenbrooke Pond from approximately 1,200 feet upstream to
approximately 1,700 feet upstream of Garrison Street, The base flood elevations (BFEs) decreased along the
revised reach from approximately 800 feet downstream of Alameda Avenue to approximately 200 feet
upstream of Kipling Parkway, The maximum decrease in BFE, 2 feet, occurred at Addenbrooke Pond,