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Home My WebLink About2007 FEMA FIRM PANEL 930NOTES 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 Bess 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 1301) 713-3191 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.ngs.noaa.gov. Bass 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 11-877-336- 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:/twww.eng.hctK.not/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. 290, 29041'15' 9690 95 e07'30' ZONE X au %00 YO i 1'45' 29e45'00' 3292000 M 1291000 M !90000 M 19000 M 1000 M 00 M OM 15' LEGEND SPECIAL FLOOD HAZARD AREAS SUBJECT TO INUNDATION BY THE 1 % ANNUAL CHANCE FLOOD EVENT The 1 % annual chance flood (100-year flood), also known as the base flood, is the flood that has a 196 chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is the area subject to floodingg by the 1 % annual chance flood. Areas of Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V, and VE. The Base 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 (usually areas of ponding); base flood elevations determined. ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average depths determined. For areas of alluvial fan flooding, velocities also determined. ZONE AR Area of special flood hazard formerly protected from the 1 % amuel chance flood event by a flood control system that was subsequently decertified. Zone AR indicates that the former flood control system is being restored to provide protection from the 1 % annual chance or greater flood event. ZONE A99 Area to be protected from 1 % annual chance flood event by a Federal flood protection system under construction; no base flood elevations determined. ZONE V Coastal flood zone with velocity hazard (wave action); no base flood elevations determined. ZONE VE Coastal flood zone with velocity hazard (wave action); base flood elevations determined. FLOODWAY AREAS IN ZONE AE The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of encroachment so that the 1 % annual chance flood can be carried without substantial increases in flood heights. OTHER FLOOD AREAS ZONE X Areas of 0.2% annual chance flood; areas of 1 % annual chance flood with average depths of Is" than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 196 annual chance flood. OTHER AREAS ZONE X Areas determined to be outside the 0.2% annual chance floodplain. ZONE D 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 Areas. Floodplain boundary Floodway boundary Zone D boundary •eeeeeeaeeseeee• CBRS and OPA boundary Boundary dividing Special Flood Hazard Areas of different Base Flood Elevations, flood depths or velocities. Base Flood Elevation line and value; elevation in feet* (EL 987) Bass Flood Elevation value where uniform within zone; elevation in feat* •Referenoed to the North American Vertical Datum of 1988 A A Cross Section Line - - - - - — Transact Line 97007'30', 32022'30' Geographic coordinates referenced to the North American Datum of 1983 (NAD 83) 4276000M 1000-meter Universal Transverse Mercator grid values, zone 15 600000 FT 5000-foot grid ticks DX551OX Bench mark (see explanation in Notes to Users section of 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 DATES) OF REVISION(S) TO THIS PANEL SEPTEMBER 30, 1992 NOVEMBER 8, 1996 APRIL 20, 2000 to change base flood elevations, to add special flood hazard areas, to change special flood hazard areas, to change zone designations, to reflect updated topographic information, and to change floodway. For community map revision history prior to countywide mapping, refer to the Community 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 insurance agent or call the National Flood Insurance Program at (800) 638-6620. Alb - MAP SCALE 1' - 1000' Soo 0 1000 2000 FEET METERS 300 0 300 SOO PANEL 0930L FIRM FLOOD INSURANCE RATE NAP HARMS COUNTY, TEXAS AND INCORPORATED AREAS PANEL 930 OF 1150 (SEE MAP INDEX FOR FIRM PANEL LAYOUT) CONTAINS: COWUNITV NUMBER PAS SUFFIX HA M 000NTY, UMNCORPORATEDAREAS 4111007 0aa0 L HOUBTON, OITY OF 460200 Dow L DEER PARK WY OF 4502a1 0M L LA PORTE, CRY OF 48W7 0030 L PRELIMINARY MICHAEL BAKER, JR., INC SEP 3 0 ? `?4 Notice to User: The Map NuenMr shown below should be used when placing map orders, the Commocift Naselw shown above should be used on insurance applications for the subject oommunity. MAP NUMBER 48201CO930L MAP REVISED: Federal Emergency Mani.gement Agency