HomeMy WebLinkAbout2007 FEMA FIRM PANEL 945NOTES TO USERS
This map is for use in administering the National Flood Insurance Program. It
does not necessarily identify all areas subject to flooding, particularly from local
drainage sources of small size. The community map repository should be
consulted for possible updated or additional flood hazard information.
To obtain more detailed information in areas where Base Flood Elevation
(BFEs) and/or floodways have been determined, users are encouraged to consult
the Flood Profiles and Floodway Data tables contained within the Flood Insur-
ance Study (FIS) report that accompanies this FIRM. Users should be aware that
BFEs shown on the FIRM represent rounded whole -foot elevations. These BFEs
are intended for flood insurance rating purposes only and should not be used
as the sole source of flood elevation information. Accordingly, flood elevation
data presented in the FIS should be utilized in conjunction with the FIRM for
purposes of construction and/or floodplain management.
Coastal Base Flood Elevation (BFEs) shown on this map apply only land-
ward of 0.0' North American Vertical Datum (NAVD). Users of this FIRM
should be aware that coastal flood elevations may also be provided in the
Summary of Stillwater Elevations table in the Flood Insurance Study report for
this community. Elevations shown in the Summary of Stillwater Elevations table
should be used for construction, and/or floodplain management purposes when
they are higher than the elevations shown on this FIRM.
Boundaries of the floodways were computed at cross sections and interpolated
between cross sections. The floodways were based on hydraulic considerations
with regard to requirements of the National Flood Insurance Program. Floodway
widths and other pertinent floodway data are provided in the Flood Insurance
Study report for this jurisdiction.
Certain areas not in Special Flood Hazard Areas may be protected by flood
control structures. Refer to Section 2.4 "Flood Protection Measures" of
the Flood Insurance Study report for information on flood control structures
in this jurisdiction.
The projection used in the preparation of this map is Universal Tranverse
Mercator (UTM) zone 15. The horizontal datum is NAD83, GRS1980
spheroid. Differences in datum, spheroid, projection or UTM zones used in
the production of FIRMS for adjacent jurisdictions may result in slight positional
differences in map features across jurisdiction boundaries. These differences
do not affect the accuracy of the FIRM.
Flood elevations on this map are referenced to the North American Vertical
Datum of 1988. These flood elevations must be compared to structure and
ground elevations referenced to the same vertical datum. For information
regarding conversion between the National Geodetic Vertical Datum of 1929
and the North American Vertical Datum of 1988, visit the National Geodetic
Survey website at www.ngs.noaa.gov or contact the National Geodetic Survey
at the following address:
Spatial Reference System Division
National Geodetic Survey, NOAA
Silver Spring Metro Center
1315 East-West Highway
Silver Spring, Maryland 20910
(301) 713-3242
To obtain current elevation, description, and/or location information for benchmarks
shown on this map, please contact the Information Services Branch of the
National Geodetic Survey at (301) 713-3242, or visit their website at
www.nas.noaagov_
Base map information shown on this FIRM was provided in digital format by
the Harris Galveston Area Council and was revised and enhanced
by Harris County.
Corporate limits shown on this map are based on the best data available
at the time of publication. Because changes due to annexations or de -annexations
may have occurred after this map was published, map users should contact
appropriate community officials to verify current corporate limit locations.
Please refer to the separately printed Map Index for an overview map of the
county showing the layout of map panels; community map repository addresses;
and a Listing of Communities table containing National Flood Insurance Program
dates for each community as well as a listing of the panels on which each
community is located.
An accompanying Flood Insurance Study report, Letters of Map Revision or
Letters of Map Amendment revising portions of this panel, and digital versions
of this PANEL may be available. Contact the FEMA Map Service Center at
the following phone numbers and Internet address for infomation on all related
products available from FEMA;
Phone: 800-358-9616
FAX: 800-358-9620
www.fema.gov/msc
If you have questions about this map or questions concerning the National
Flood Insurance Program in general, please call 1-877-FEMA-MAP (1-877-336-
2627) or visit the FEMA website at www.fema.gov.
This map reflects more detailed and up-to-date stream channel configurations
than those shown on the previous FIRM for this jurisdiction. The floodplains
and floodways that were transferred from the previous FIRM may have been
adjusted to conform to these new stream channel configurations. As a
result, the Flood Profiles and Floodway Data tables in the Flood Insurance
Study report may reflect stream channel distances that differ from what is
shown on this map.
Vertical Datum Adjustment due to subsidence is the 2001 adjustment.
Benchmarks shown on this map were provided by either Harris County or
the National Geodetic Survey. To obtain elevation, description, and
location information for benchmarks provided by Harris County, please
contact the Permits Office of the Public Infrastructure Departement at
(713) 956-3000 or visit their website at http://www.eng.hctx.net/permits.
For information regarding the benchmarks provided by the National
Geodetic Survey, please see note above.
Some bridges and other structures shown on the detailed studied streams
are not labeled. See corresponding flood profile for appropriate name.
95 °03'45"
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COASTAL BASE FLOOD ELEVATIONS
APPLY ONLY LANDWARD OF 0.0 FEET NAVD
(2001 ADJUSTMENT)
CHAMBERS
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LEGEND
SPECIAL FLOOD HAZARD AREAS SUBJECT TO INUNDAT
BY THE 1 % ANNUAL CHANCE FLOOD EVENT
The 1 % annual chance flood (100-year flood), also known as the base flood, is the
that has a 1 % chance of being equaled or exceeded in any given year. The SI
Flood Hazard Area is the area subject to floodingg by the 1 % annual chance flood.
of Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V, and VE. The
Flood Elevation is the water surface elevation of the 1 % annual chance flood.
ZONE A No base flood elevations determined.
ZONE AE Base flood elevations determined.
ZONE AH Flood depths of 1 to 3 feet (usuaNy areas of ponding); base
elevations determined.
ZONE AO Flood depths of 1 to 3 feet (usually -"
usually sheet flow on sloping tat
average depths determined. For areas. of alluvial fan flooding, velo
also determined.
ZONE AR Area of special flood hazard formerly protected from the 1 % a
chance flood event by a flood control system that was subsegL
decertified. Zone AR indicates that the former flood control systc
being restored to provide protection from the 1 % annual chanr
greater flood event.
ZONE A99 Area to be protected from 1 % annual chance flood event by a Ft
flood protection system under construction; no base flood elevi
determined.
ZONE V Coastal flood zone with velocity hazard (wave action); no base
elevations determined.
ZONE VE Coastal flood zone with velocity hazard (wave action); base flood elevi
determined.
® FLOODWAY AREAS IN ZONE AE
The floodway is the channel of a stream plus any adjacent floodplain areas that mu
kept free of encroachment so that the 1 % annual chance flood can be carried wi
substantial increases in flood heights.
OTHER FLOOD AREAS
ZONE X Areas of 0.2% annual chance flood; areas of 1 % annual chance
with average depths of less than 1 foot or with drainage areas less
1 square mile; and areas protected by levees from 1 % annual cl
flood.
1� OTHER AREAS
ZONE X Areas determined to be outside the 0.2% annual chance floodplain.
ZONED Areas in which flood hazards are undetermined, but possible.
® COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS
OTHERWISE PROTECTED AREAS WAS)
CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Area
Floodplain boundary
Floodway boundary
Zone D boundary
•aaa�aaaaaa•aaa• CBRS and OPA boundary
Boundary dividing Special Flood Hazard Areas of dif
Base Flood Elevations, flood depths or velocities.
^^^^^^^5 f 3"""""^^^' Base Flood Elevation line and value; elevation in feet"
(EL 987) Base Flood Elevation value where uniform within
elevation in feet'
`Referenced to the North American Vertical Datum of 1988
Cross Section Line
-
Transact Line
23 23
97°07'30", 32122'30" Geographic coordinates referenced to the North Am
Datum of 1983 MAD 83)
4276000M 1000-meter Universal Transverse Mercator grid values, zoI
600000 FT 5000-foot grid ticks
DX5510X Bench mark (see explanation in Notes to Users secti
this FIRM panel).
• M 1.5 River Mile
MAP REPOSITORY
Refer to Repository Listing on Index Map
EFFECTIVE DATE OF COUNTYWIDE
FLOOD INSURANCE RATE MAP
SEPTEMBER 28, 1990
EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL
SEPTEMBER 30, 1992
NOVEMBER 6, 1996
APRIL 20, 2000
JUNE 18, 2007: to change base flood elevations, to add special flood I
areas, to change special flood hazard areas, to change zone designations
reflect updated topographic information, and to change floodway.
For community map revision history prior to countywide mapping, refer to the Comn
Map History table located in the Flood Insurance Study report for this jurisdiction.
To determine if flood insurance is available in this community, contact your insL
agent or call the National Flood Insurance Program at (800) 638-6620.
MAP SCALE 1" = 1000'
500 0 _..,1000 2000
�__ _ FEET
METERS
300 0 300 600
TFM
PANEL 0945L —
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FIRM
FLOOD INSURANCE RATE MAP
HARRIS COUNTY,
TEXAS
AND INCORPORATED AREAS
PANEL 945 OF 1150
(SEE MAP INDEX FOR FIRM PANEL LAYO
CONTAINS:
COMMUNITY NUMBER PANEL SL
MORGANS POINT, CITY OF 480305 0945
LA PORTE, CITY OF 4M"7 Q$d6
HARRIS COUNTY,
UNINCORPORATED AREAS 480287 ow
PASADENA, CITY OF 480307 0046
Notice to User: The Map Number shown below should 1
when placing map orders; the Community Number
above should be used on Insurance applications for the
community.
kTART,t! MAP NUM;
le,._.���.. 48201 C09
kz:�/
MAP REVIE
JUNE 18, 2
Federal Emergency Management Ag(