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Federal Emergency Management Agency
Washington, D.C. 20472
June 2, 2011
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
The Honorable Doug Stover
Mayor, City of Coppell
255 Parkway Boulevard
Coppell, TX 75019
Dear Mayor Stover:
IN REPLY REFER TO:
Case No.: 11-06-0227P
Community Name: City of Coppell, TX
Community No.: 480170
Effective Date of
This Revision: October 17, 2011
The Flood Insurance Study Report and Flood Insurance Rate Map for your community have been revised by this
Letter of Map Revision (LOMR). Please use the enclosed annotated map panels revised by this LOMB for
floodplain management purposes and for all flood insurance policies and renewals issued in your community.
Additional documents are enclosed that provide information regarding this LOMR. Please see the List of
Enclosures below to determine which documents are included. Other attachments specific to this request may be
included as referenced in the Determination Document. If you have any questions regarding floodplain management
regulations for your community or the National Flood Insurance Program (NFIP) in general, please contact the
Consultation Coordination Officer for your community. If you have any technical questions regarding this LOMR,
please contact the Director, Mitigation Division of the Department of Homeland Security's Federal Emergency
Management Agency (FEMA) in Denton, Texas, at (940) 898 -5127, or the FEMA Map Information eXchange
(FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP). Additional information about the NFIP is available on
our Web site at lnttp: / /www.feina.gov /business /nfip.
Sincerely,
Michael I. McGinn, Program Specialist
Engineering Management Branch
Federal Insurance and Mitigation Administration
List of Enclosures:
Letter of Map Revision Determination Document
Annotated Flood Insurance Rate Map
Annotated Flood Insurance Study Report
cc: Mr. Ken Griffin, P.E.
Director of Engineering and Public Works
City of Coppell
For: Luis Rodriguez, P.E., Chief
Engineering Management Branch
Federal Insurance and Mitigation Administration
Ms. Maria C. Martinez, P.E., CFM
Halff Associates, Inc.
Page 1 of 4
Issue Date: June 2, 2011
Effective Date: October 17, 2011
Case No.: 11- 06 -0227P
LOMR -APP
Federal Emergency Management Agency
Washington, D.C. 20472
� Sti
LETTER OF MAP REVISION
DETERMINATION DOCUMENT
COMMUNITY AND REVISION INFORMATION
PROJECT DESCRIPTION
BASIS OF REQUEST
City of Coppell
BRIDGE
FLOODWAY
Dallas County
FILL
HYDRAULIC ANALYSIS
Texas
NEW TOPOGRAPHIC DATA
COMMUNITY
COMMUNITY NO.: 480170
IDENTIFIER
Southwestern Boulevard
APPROXIMATE LATITUDE AND LONGITUDE: 32.949,-97.001
SOURCE: Precision Mapping Streets DATUM: NAD 83
ANNOTATED MAPPING ENCLOSURES
ANNOTATED STUDY ENCLOSURES
TYPE: FIRM* NO.: 48113CO135J DATE: August 23, 2001
DATE OF EFFECTIVE FLOOD INSURANCE STUDY: June 16, 2005
TYPE: FIRM NO.: 48113CO155J DATE: August 23, 2001
PROFILE: 213P
FLOODWAY DATA TABLE: 8
Enclosures reflect changes to flooding sources affected by this revision.
* FIRM - Flood Insurance Rate Map
FLOODING SOURCE AND REVISED REACH
Grapevine Creek - from approximately 100 feet downstream of St. Louis Southwestern Railway to approximately 1,360 feet upstream of Southwestern Boulevard
SUMMARY OF REVISIONS
Flooding Source Effective Flooding Revised Flooding Increases Decreases
Grapevine Creek Zone AE Zone AE YES YES
BFEs* BFEs YES YES
Floodway Floodway NO YES
* BFEs - Base Flood Elevations
DETERMINATION
This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA)
regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that
a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and /or National Flood Insurance Program (NFIP) map is
warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map
panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP) or by letter
addressed to the LOMC Clearinghouse, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at
http://www.fema.gov/business/nfip.
Michael J. McGinn, Program Specialist
Engineering Management Branch 11- 06 -0227P
Federal Insurance and Mitigation Administration 102 -1 -A -C
Page 2 of 4
Issue Date: June 2, 2011
Effective Date: October 17, 2011
Case No.: 11- 06 -0227P
LOMR -APP
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°� Federal Emergency Management Agency
6Nk-V?
UWashington, D.C. 20472
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LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
COMMUNITY INFORMATION
APPLICABLE NFIP REGULATIONS /COMMUNITY OBLIGATION
We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93 -234) and in accordance
with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90 -448),
42 U.S.C. 4001 -4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended,
communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP
criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum
requirements for continued NFIP participation and do not supersede more stringent State /Commonwealth or local requirements to which
the regulations apply.
We provide the floodway designation to your community as a tool to regulate floodplain development. Therefore, the floodway revision
we have described in this letter, while acceptable to us, must also be acceptable to your community and adopted by appropriate
community action, as specified in Paragraph 60.3(d) of the NFIP regulations.
NFIP regulations Subparagraph 60.3(b)(7) requires communities to ensure that the flood - carrying capacity within the altered or relocated
portion of any watercourse is maintained. This provision is incorporated into your community's existing floodplain management
ordinances; therefore, responsibility for maintenance of the altered or relocated watercourse, including any related appurtenances such as
bridges, culverts, and other drainage structures, rests with your community. We may request that your community submit a description
and schedule of maintenance activities necessary to ensure this requirement.
COMMUNITY REMINDERS
We based this determination on the 1- percent - annual- chance discharges computed in the LOMR Case No. 07- 06 -2203P and LOMR -F
Case No. 02- 06 -2315P for your community without considering subsequent changes in watershed characteristics that could increase
flood discharges. Future development of projects upstream could cause increased discharges, which could cause increased flood hazards.
A comprehensive restudy of your community's flood hazards would consider the cumulative effects of development on discharges and
could. therefore. indicate that ereater flood hazards exist in this area.
Your community must regulate all proposed floodplain development and ensure that any permits required by Federal or State law have
been obtained. State or community officials, based on knowledge of local conditions and in the interest of safety, may set higher
standards for construction or may limit development in floodplain areas. If your State or community has adopted more restrictive or
comprehensive floodplain management criteria, those criteria take precedence over the minimum NFIP requirements.
We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community
will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release
for publication in your community's newspaper that describes the revision and explains how your community will provide the data and
help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can
benefit from the information.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP) or by letter
addressed to the LOMC Clearinghouse, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at
http: / /www.fema.gov /business /nfip.
Michael J. McGinn, Program Specialist
Engineering Management Branch 11- 06 -0227P
Federal Insurance and Mitigation Administration 102 -I -A -C
Page 3 of 4
Issue Date: June 2, 2011
Effective Date: October 17, 2011
Case No.: 11- 06 -0227P
LOMR -APP
® Federal Emergency Management Agency
Washington, D.C. 20472
�
SE
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
This revision has met our criteria for removing an area from the 1- percent - annual- chance floodplain to reflect the placement of fill.
However, we encourage you to require that the lowest adjacent grade and lowest floor (including basement) of any structure placed within
the subject area be elevated to or above the Base (1- percent - annual- chance) Flood Elevation.
We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between
your community and FEMA. For information regarding your CCO, please contact:
Mr. Frank Pagano
Director, Mitigation Division
Federal Emergency Management Agency, Region VI
Federal Regional Center, Room 206
800 North Loop 288
Denton, TX 76209
(940) 898 -5127
STATUS OF THE COMMUNITY NFIP MAPS
We are processing a revised FIRM and FIS report for Dallas County in our countywide format; therefore, we will not physically revise
and republish the FIRM and FIS report for your community to incorporate the modifications made by this LOMR at this time.
Preliminary copies of the countywide FIRM and FIS report, which present infonnation from the effective FIRMs and FIS reports for your
community and other incorporated communities in Dallas County, were submitted to your community for review on June 22, 2007. We
will incorporate the modifications made by this LOMR into the countywide FIRM and FIS report before they become effective.
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP) or by letter
addressed to the LOMC Clearinghouse, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at
http: / /www.fema.gov /business /nfip.
1 99
Michael J. McGinn, Program Specialist
Engineering Management Branch 11- 06 -0227P
Federal Insurance and Mitigation Administration 102 -I -A -C
Page 4 of 4
Issue Date: June 2, 2011
Effective Date: October 17, 2011
Case No.: 11- 06 -0227P
LOMB -APP
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Federal Emergency Management Agency
°�
4~ Washington, D.C. 20472
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Sti
LETTER OF MAP REVISION
DETERMINATION DOCUMENT (CONTINUED)
PUBLIC NOTIFICATION OF REVISION
PUBLIC NOTIFICATION
FLOODING SOURCE
LOCATION OF REFERENCED ELEVATION
BFE (FEET NGVD)
MAP PANEL
EFFECTIVE
REVISED
NUMBER
Grapevine Creek
Just upstream of St. Louis Southwestern Railway
503
504
48113CO155J
Approximately 250 feet upstream of Southwestern
507
508
48113CO135J
Boulevard
Within 90 days of the second publication in the local newspaper, a citizen may request that we reconsider this determination. Any
request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90 -day
appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective,
the revised BFEs presented in this LOMR may be changed.
A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or
about the dates listed below. Please refer to FEMA's Web site at https: / /www.floodmaps. fema .gov /fhm/Scripts /bfe_main.asp for a more
detailed description of proposed BFE changes, which will be posted within a week of the date of this letter.
LOCAL NEWSPAPER Name: Citizens' Advocate
Dates: 6/10/2011 and 6/17/2011
This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have
any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP) or by letter
addressed to the LOMC Clearinghouse, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site
at http: / /www.fema.gov /business /nfip.
Michael J. McGinn, Program Specialist
Engineering Management Branch 11- 06 -0227P
Federal Insurance and Mitigation Administration 102 -1 -A -C
BASE FLOOD
FLOODING SMIROE FLOODWAY WATER- SURFACE ELEVATION
w�n�oUT tiyrrH
CROSS SECT DISTAIMCE W1QTH SECTION AREA (MFJW 4ELt�CfTY REGULA17dRY I`L Y KOCOV AtY WCRFJISE
(FEET7 C$aa M to
SECCM) (FEET NOM
Glenn Brumb
A
B
C
D
E
Grapevine
Creek
A
B
C
D
E
F
G
680'
64
576
81
636.8
636.8
637.8
1.0
1,940'
58
531
8.1
644.4
644,4
645.2
0.8
2,750'
53
343
8.6
650.4
650.44
651.2
0.8
3,670
69
464
6.4
658.7
658.7
659.6
0.9
5,100
130
479
6.2
688.9
658,
689,9
1.0
8.300' 3
300 1
1,778 5
5.5 4
439.6 4
438.5 4
438.5 0
0.0
12,900' 9
940 3
3,141 1
11 4
449.0 4
448.4 4
448.5 0
0.5
14,I70' 4
470 2
2,079 5
5.3 4
453.0 4
453.0 4
453.8 0
0.8
16,543 6
638 4
4,624 2
2.4 4
461.5 4
461.5 4
462.3 0
0.5
20,700' 3
370 3
3,063 3
3.9 4
471.5 4
471.5 4
472.3 0
0.8
22,700' 2
200 1
1,566 7
7.5 4
478.0 4
478.0 4
478.4 0
0.4
24.000' 3
349 2
2.495 4
4.7 4
4AIA 4
4925 W
Wtll 0 f
fl d
26,851 136 1,061 11.2 488.3 4 1
1 316802 239 3.5 508.2 508.2 508.5 0.3
i
Tributary G-1 REVISED BY
of Grapevine LOMR DATED REVISED DATA
Creek April 24, 2008
A 945 137 777 4.0 493.7 493.7 493.7 0.0
B 3, 125` 82 432 7.3 499.3 499.5 494.7 0.2
lPm dmmmwA 'Fat above m% am %iih Elm Fork TMty 17ver �Ek wtkw computed MOW cowWWrafma *(Fko&ft from Elm For! TrWq JL3vw T-m atbow c6dk wsra wldt rise Greet
T
A FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA
e DALLAS COUNTY, TX GLENN BRANCH - GRAPEVINE CREEK -
AND INCORPORATED AREAS REFLECT o MR TRIBUTARY G -1 OF GRAPEVINE CREEK
a EFFECTI : October 17, 2011
i
Tributary G-1 REVISED BY
of Grapevine LOMR DATED REVISED DATA
Creek April 24, 2008
A 945 137 777 4.0 493.7 493.7 493.7 0.0
B 3, 125` 82 432 7.3 499.3 499.5 494.7 0.2
lPm dmmmwA 'Fat above m% am %iih Elm Fork TMty 17ver �Ek wtkw computed MOW cowWWrafma *(Fko&ft from Elm For! TrWq JL3vw T-m atbow c6dk wsra wldt rise Greet
T
A FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA
e DALLAS COUNTY, TX GLENN BRANCH - GRAPEVINE CREEK -
AND INCORPORATED AREAS REFLECT o MR TRIBUTARY G -1 OF GRAPEVINE CREEK
a EFFECTI : October 17, 2011
0
0
ZONE X
J KAYE
J
W
CITY OF o —
COPPELL
480170
LIMIT OF
DETAILED STUDY ZON
STREET
FLOOD HAZARDS SHOWN OUTSIDE THE CITIES OF
COPPELL, DALLAS, AND IRVING ARE FOR
INFORMATION PURPOSES ONLY. FOR FLOOD
INSURANCE PURPOSES REFER TO SEPARATELY
PUBLISHED FLOOD INSURANCE RATE MAPS.
LOCH
AVENU
of Grapevine
BETHEL v ROAD
o AREA REVISED
ZON E A o BY LOMR DATED
ly APRIL 24, 2008
Q
W ZONE AE
a a
o Grapevine
0 Creek
ZONE X ZONE AE
ST. LOUT �— RAILWAY
SO UTHWESTERN I `'
B OULEVARD
LIMIT OF ZONE
/ STUDY
O
a.
W
W
of
LL
MEW
Grapevine
Creek
s
70 AIRLINE
VZONE X
0
DRIVE
717
0
J
W
Z
d
z
0
507
508
REVISED
AREA
APPROXIMATE SCALE IN FEET
1000 500 0 1000
FEET
Legend
1% annualchance
(100 -Year) Floodplain
1% annual chance
(100 -Year) Floodway
1
0.2% annual chance
FLOOD INSURANCE RATE MA
(500 -Year) Floodplain
LOCH
AVENU
of Grapevine
BETHEL v ROAD
o AREA REVISED
ZON E A o BY LOMR DATED
ly APRIL 24, 2008
Q
W ZONE AE
a a
o Grapevine
0 Creek
ZONE X ZONE AE
ST. LOUT �— RAILWAY
SO UTHWESTERN I `'
B OULEVARD
LIMIT OF ZONE
/ STUDY
O
a.
W
W
of
LL
MEW
Grapevine
Creek
s
70 AIRLINE
VZONE X
0
DRIVE
717
0
J
W
Z
d
z
0
507
508
REVISED
AREA
APPROXIMATE SCALE IN FEET
1000 500 0 1000
FEET
11
NATIONAL FLOOD INSURANCE PROGRAM
FIRM
n
FLOOD INSURANCE RATE MA
DALLAS COUNTY,
®
TEXAS
0
AND INCORPORATED AREAS
D
PANEL 135 OF 725
(SEE MAP INDEX FOR PANELS NOT PRINTED)
CONTAINS:
a
COMMUNITY NUMBER PANEL SUFFIX
O
COPPEL, OITY OF 480170 0135 ,I
DALLAS, CITV OF 480171 0135 ,I
IRVING, CITY OF 480180 0135 1
REVISED TO
®
REFLECT LOMR
®
EFFECTIVE: October 17, 2
®
Noticeto User:The Map Number shown below should be
used when placing map orders; the community Number shown
above should be used on insurance applications for the subject
community.
QtiVARTd1E� MAP NUMBER
48113C0135 J
EFFECTIVE DATE:
I9 ND
SEA' AUGUST 23, 2001
a
ILIL
Federal Emergency Management Agency
11
Legend
1% annual chance
(100 -Year) Floodplain
1% annual chance
(100 -Year) Floodway
0.2% annual chance
(500 -Year) Floodplain
o
° 0
CITY OF
a
CO►PPhL
APPROXIMATE SCALE IN FEET
z
480170
1000 500 0 1000
w
BETHEL
SCHOOL
FEET
ROAD
ROAD
ZONE
ECN��
AE w ®
NATIONAL FLOOD INSURANCE PROGRAM
r
AREA REVISED v
o
z
n 490
BY LOMB DATED
APRIL 24, 2008
FIRM
w
y
Y
U
ZONE AE
MEADOW CREEK ° z
A Al
FLOOD INSURANCE RATE MA
a
z
489 � 1
ROAD =
DALLAS COUNTY,
IT
�` h ZONE AE
®
N
TEXAS
494
d t
o
AND INCORPORATED AREAS
Tributary G -1
491 RM199
b
PANEL 155 OF 725
of Grapevine o
493 ZONE X
�8 ]
(SEE MAP INDEX FOR PANELS NOT PRINTED)
Creek
G
493 Grapevine
484
a
CONTAINS:
COMMUNITY NUMBER PANEL SUFFIX
BETHEL ROAD
494 Creek
483
°
ZONE X
484
CARROL FY OF 480787 0155 1
ZONE X
CITY O
COPPEL, CI7V OF 480770 0755 1
DALLAS, CITY OF 480171 0155
IRVING, CITY OF 480180 0155
Grapevine
Creek
REVISED TO
S
Op
RAILW
®
REFLECT LOMR
GLENDAL
EFFECTIVE: October 17, 20
1
502
S�U'(Hw
EStERN
DRIVE
ICED
Notice to User: The Map Number sham below should be
ZONE X
ST LOUIS
CITY OF
used when placing map orders; the community Number shown
above s nity. hould be used on insurance applications for thesubject
commu
504
DALLAS
0
o
480171
o�,enrR�F� MAP NUMBER
48113C0155 J
ZONE AE
BELTLINE ROAD
®
o �� t9 ND SJ4~ EFFECTIVE DATE:
REVISED
AUGUST 23, 2001
AREA z
ZONE X P1
w
I
Federal Emergency Management Agency
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KU M
a