National Flood Hazard Layer (NFHL)

Identification Information:

Citation:

Citation Information:

Publication Date: 20250206

Title: National Flood Hazard Layer (NFHL)

Edition: Version 1.1.1.0

Geospatial Data Presentation Form: FEMA-NFHL

Publication Information:

Publisher: Federal Emergency Management Agency

Online Linkage: https://geodata.hawaii.gov/arcgis/rest/services/Hazards/MapServer/6

Online Linkage: https://files.hawaii.gov/dbedt/op/gis/data/s_fld_haz_ar_state.pdf

Description:

Abstract: [Metadata]  Flood Hazard Areas for the State of Hawaii as of June 2026 - downloaded from FEMA Map Service Center 12/29/25. For more information, please refer to summary metadata: https://files.hawaii.gov/dbedt/op/gis/data/s_fld_haz_ar_state.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, HI 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. 

Purpose: Flood Hazard Areas (DFIRMs) for the State of Hawaii as of June 2026.

Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 20250206

Currentness Reference: Publication Date

Status:

Progress: In work

Maintenance and Update Frequency: Monthly

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -160.250498

East Bounding Coordinate: -154.730289

North Bounding Coordinate: 22.235771

South Bounding Coordinate: 18.891137

Keywords:

Theme:

Theme Keyword Thesaurus: NGDA Portfolio Themes

Theme Keyword: NGDA

Theme Keyword: National Geospatial Data Asset

Theme Keyword: Elevation Theme

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Category

Theme Keyword: hydrology

Theme Keyword: environment

Theme Keyword: inlandWaters

Theme Keyword: structure

Theme Keyword: transportation

Theme Keyword: elevation

Theme:

Theme Keyword Thesaurus: FEMA NFIP Topic Category

Theme Keyword: FIRM

Theme Keyword: FEMA Flood Hazard Zone

Theme Keyword: FIRM Database

Theme Keyword: Special Flood Hazard Area

Theme Keyword: Flood Insurance Rate Map

Theme Keyword: CBRS

Theme Keyword: Coastal Barrier Resources System

Theme Keyword: Riverine Flooding

Theme Keyword: Coastal Flooding

Theme Keyword: NFIP

Theme Keyword: Base Flood Elevation

Theme Keyword: SFHA

Theme Keyword: Floodway

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories

Theme Keyword: elevation

Theme Keyword: environment

Theme Keyword: inlandWaters

Theme Keyword: structure

Theme Keyword: transportation

Place:

Place Keyword Thesaurus: None

Place Keyword: Alabama

Place Keyword: Alaska

Place Keyword: American Samoa

Place Keyword: Arizona

Place Keyword: Arkansas

Place Keyword: California

Place Keyword: Colorado

Place Keyword: Connecticut

Place Keyword: Delaware

Place Keyword: District of Columbia

Place Keyword: Federated State of Micronesia

Place Keyword: Florida

Place Keyword: Georgia

Place Keyword: Guam

Place Keyword: Hawaii

Place Keyword: Idaho

Place Keyword: Illinois

Place Keyword: Indiana

Place Keyword: Iowa

Place Keyword: Kansas

Place Keyword: Kentucky

Place Keyword: Louisiana

Place Keyword: Maine

Place Keyword: Marshall Islands

Place Keyword: Maryland

Place Keyword: Massachusetts

Place Keyword: Michigan

Place Keyword: Minnesota

Place Keyword: Mississippi

Place Keyword: Missouri

Place Keyword: Montana

Place Keyword: Nebraska

Place Keyword: Nevada

Place Keyword: New Hampshire

Place Keyword: New Jersey

Place Keyword: New Mexico

Place Keyword: New York

Place Keyword: North Carolina

Place Keyword: North Dakota

Place Keyword: Northern Mariana Islands

Place Keyword: Ohio

Place Keyword: Oklahoma

Place Keyword: Oregon

Place Keyword: Palau

Place Keyword: Pennsylvania

Place Keyword: Puerto Rico

Place Keyword: Rhode Island

Place Keyword: South Carolina

Place Keyword: South Dakota

Place Keyword: Tennessee

Place Keyword: Texas

Place Keyword: Utah

Place Keyword: Vermont

Place Keyword: U.S. Minor Islands

Place Keyword: Virgin Islands

Place Keyword: Virginia

Place Keyword: Washington

Place Keyword: West Virginia

Place Keyword: Wisconsin

Place Keyword: Wyoming

Access Constraints: None

Use Constraints: The hardcopy FIRM and FIRM Database and the accompanying FIS are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. Acknowledgement of FEMA would be appreciated in products derived from these data.State of Hawaii Terms of Use. The contents of this web page are public domain and to the extent indicated otherwise in the Terms of Use, are exempt from Terms of Use policy restrictions.There are no expressed warranties associated with the release of this data or product. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features depicted do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind. The Office of Planning and Sustainable Development encourages users to report any discrepancies or errors found.  Contact: Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov. Website: https://planning.hawaii.gov/gis.

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Emergency Management Agency

Contact Address:

Address Type: mailing

Address: 500 C Street, S.W.

City: Washington

State or Province: District of Columbia

Postal Code: 20472

Country: US

Contact Voice Telephone: 1-877-336-2627

Contact Electronic Mail Address: mscservices@riskmapcds.com

Data Set Credit: Federal Emergency Management Agency (FEMA)

Native Data Set Environment: Original data development environment may vary. Finishing of the data is done using Esri's ArcGIS software. The geodatabase was created using ArcGIS version 10.1.

Data Quality Information:

Attribute Value Accuracy Information:

Attribute Accuracy Report: The NFHL incorporates all FIRM Databases published by FEMA and any LOMRs that have been issued against those databases since their publication date. The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. Attribute accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of the individual FIRM Database components of the NFHL was also performed. To obtain more detailed information in areas where Base Flood Elevations (BFEs) and/or floodways have been determined, users are encouraged to consult the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained within the FIS reports that accompany the individual FIRM Database components of the NFHL. Users should be aware that BFEs shown in the S_BFE table may 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 report must be used in conjunction with the FIRM for purposes of construction and/or floodplain management. The 1-percent-annual-chance water-surface elevations shown in the S_XS table match the regulatory elevations shown in the FIS report.

Logical Consistency Report: When FEMA revises an FIS, adjacent studies are checked to ensure agreement between flood elevations at the boundaries. Likewise flood elevations at the confluence of streams studied independently are checked to ensure agreement at the confluence. The FIRM and the FIS are developed together and care is taken to ensure that the elevations and other features shown on the flood profiles in the FIS agree with the information shown on the FIRM. However, the elevations as shown on the FIRM may represent rounded whole-foot elevations. They must be shown so that a profile recreated from the elevations on the FIRM will match the FIS profiles within one half of one foot.

Completeness Report: Data contained in the NFHL reflects the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management. Flood hazard areas are determined using statistical analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological and hydraulic analysis. Generally, regulatory water surface elevations and/or regulatory floodways are published only for developed or developing areas of communities. For areas where little or no development is expected to occur, FEMA may generate flood risk data without published water surface elevations. Typically, only drainage areas that are greater than one square mile and with an average of one foot of flood depth or greater are studied. Note: The NFHL reflects the most current information available when the distribution data set was created. Currently, not all areas of a State or Territory have effective FIRM Database data. As a result, users may need to refer to the effective FIRM for effective flood hazard information.

Positional Accuracy:

Horizontal Positional Accuracy:

Horizontal Positional Accuracy Report: The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of the individual FIRM Database components of the NFHL was also performed.

Positional Accuracy:

Vertical Positional Accuracy:

Vertical Positional Accuracy Report: The NFHL consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. The reliability of the floodplain boundary delineation is quantified by comparing the computed flood elevation to the ground elevation at the mapped floodplain boundary. The tolerance for how precisely the flood elevation and the ground elevation must match varies based on the flood risk class, which is a function of population, population density, and/or anticipated growth in floodplain areas. A horizontal accuracy of +/- 38 feet is used to determine the compliance with the vertical tolerances defined for each risk class. The range of differences between the ground elevation (defined from the topographic data used for the Flood Risk Project) and the computed flood elevation is between +/- 1.0 foot at the 95% confidence interval for areas with high population within the floodplain and/or high anticipated growth and Special Flood Hazard Areas (SFHAs) with high flood risk to +/- one-half the contour interval at the 85% confidence interval for areas with low population and densities within the floodplain and small or no anticipated growth and SFHAs with low flood risk. Independent quality control testing of the individual FIRM Database components of the NFHL was also performed.

Lineage:

Process Step:

Process Description:

The NFHL dataset is a compilation of effective FIRM Databases (a collection of the digital data that are used in GIS systems for creating new Flood Insurance Rate Maps) and Letters of Map Change (Letters of Map Amendment and Letters of Map Revision only) that create a seamless GIS data layer for a State or Territory. It is updated on a monthly basis. 

The FIRM Databases are compiled in conjunction with the hardcopy FIRMs and the final FIS reports. The specifics of the hydrologic and hydraulic analyses performed are detailed in the FIS reports available for each jurisdiction. The results of these studies are submitted in digital format to FEMA. These data and unrevised data from effective FIRMs are compiled onto the base map used for FIRM publication and checked for accuracy and compliance with FEMA standards. As new FIRM Databases are received the individual FIRM layers are sewn into the nationwide layers of the NFHL.  LOMRs for the FIRM Databases in the NFHL are cut directly into the NFHL data layers as they are being produced and finalized.

Process Date: 20150130

Spatial Data Organization Information:

Direct Spatial Reference Method: Vector

Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: GT-polygon composed of chains

Point and Vector Object Count: 0

Entity and Attribute Information:

Detailed Description:

Entity Type:

Entity Type Label: S_Alluvial_Fan

Entity Type Definition: Location and attributes for alluvial fan areas shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Attribute:

Attribute Label: OBJECTID

Attribute Definition: Internal feature number.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute Label: Shape

Attribute Definition: Feature geometry.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Coordinates defining the features.

Attribute:

Attribute Label: DFIRM_ID

Attribute:

Attribute Label: VERSION_ID

Attribute:

Attribute Label: FLD_AR_ID

Attribute:

Attribute Label: STUDY_TYP

Attribute:

Attribute Label: FLD_ZONE

Attribute:

Attribute Label: ZONE_SUBTY

Attribute:

Attribute Label: SFHA_TF

Attribute:

Attribute Label: STATIC_BFE

Attribute:

Attribute Label: V_DATUM

Attribute:

Attribute Label: DEPTH

Attribute:

Attribute Label: LEN_UNIT

Attribute:

Attribute Label: VELOCITY

Attribute:

Attribute Label: VEL_UNIT

Attribute:

Attribute Label: AR_REVERT

Attribute:

Attribute Label: AR_SUBTRV

Attribute:

Attribute Label: BFE_REVERT

Attribute:

Attribute Label: DEP_REVERT

Attribute:

Attribute Label: DUAL_ZONE

Attribute:

Attribute Label: SOURCE_CIT

Attribute:

Attribute Label: Shape_Length

Attribute Definition: Length of feature in internal units.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute Label: Shape_Area

Attribute Definition: Area of feature in internal units squared.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Detailed Description:

Entity Type:

Entity Type Label: S_Base_Index

Entity Type Definition: Location and attributes for a tiling index for raster data used for the FIRM base map.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_BFE

Entity Type Definition: Location and attributes for base flood elevations lines shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_CBRS

Entity Type Definition: Location and attributes for Coastal Barrier Resource System units shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Cst_Gage

Entity Type Definition: Location and attributes for the coastal gages for the study area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Cst_Tsct_Ln

Entity Type Definition: Location and attributes for coastal transect lines shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Datum_Conv_Pt

Entity Type Definition: Location and attributes for points used to calculate vertical datum conversion factors.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_FIRM_Pan

Entity Type Definition: Location and attributes for FIRM hardcopy map panels.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Fld_Haz_Ar

Entity Type Definition: Location and attributes flood insurance risk zones shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Fld_Haz_Ln

Entity Type Definition: Location and attributes for boundaries of flood insurance risk zones shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Gage

Entity Type Definition: Location and attributes for riverine gages used to determine discharges for the study area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Gen_Struct

Entity Type Definition: Location and attributes for flood control structures shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_HWM

Entity Type Definition: Location and attributes for historic high water marks for the study area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Hydro_Reach

Entity Type Definition: Location and attributes for lines that represent the connectivity between the subbasins and flow direction between nodes within the study area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Label_Ld

Entity Type Definition: Location and attributes for leader lines for labels shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Label_Pt

Entity Type Definition: Location and attributes for labels shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Levee

Entity Type Definition: A spatial dataset consisting of lines that represent the centerlines of levees.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_LiMWA

Entity Type Definition: A spatial data set consisting of lines that depict the limit of 18-inch or greater coastal waves in a Coastal AE Zone.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_LOMR

Entity Type Definition: A spatial data set consisting of polygons that depict effective LOMRs that have been incorporated into the NFHL since the last publication of the FIRM panel for the area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Nodes

Entity Type Definition: Location and attributes of points that depict locations of computed discharges for the 10-, 2-, 1-, and 0.2-percent-annual-chance floods.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_PFD_Ln

Entity Type Definition: Location and attributes for the primary frontal dune features for the coastal study area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_PLSS_Ar

Entity Type Definition: Location and attributes of sections, townships and ranges shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Pol_Ar

Entity Type Definition: Location and attributes for political jurisdictions shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Profil_BasLn

Entity Type Definition: A spatial data set consisting of lines showing the flow path used for floodplain modeling and mapping.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Riv_Mrk

Entity Type Definition: Location and attributes for river mile markers shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Stn_Start

Entity Type Definition: A spatial data set consisting of points indicating the location of the reference point that was used as the origin for distance measurements along streams and rivers.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Subbasins

Entity Type Definition: Location and attributes for subbasins used in the hydrologic analysis.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Submittal_Info

Entity Type Definition: A spatial data set consisting of polygons depicting the extents of the studied area.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Topo_Confidence

Entity Type Definition: A spatial dataset consisting of polygons depicting areas of low confidence topographic data.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Trnsport_Ln

Entity Type Definition: Location and attributes for roads, railroads and other transportation features shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Tsct_Basln

Entity Type Definition: A spatial data set consisting of lines that represent the 0.0-foot elevation contour used for coastal modeling and mapping.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Wtr_Ar

Entity Type Definition: Location and attributes for hydrography features shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_Wtr_Ln

Entity Type Definition: Location and attributes for hydrography features shown on the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Detailed Description:

Entity Type:

Entity Type Label: S_XS

Entity Type Definition: Location and attributes for cross-section lines in the area covered by the FIRM.

Entity Type Definition Source: FEMA FIRM Database Technical Reference (available in the FEMA Library at http://www.fema.gov/media-library/assets/documents/34519).

Overview Description:

Entity and Attribute Overview:

The NFHL is made up of several data themes containing both spatial and attribute information. These data together represent the current flood risk for the subject area as identified by FEMA. The attribute tables include SFHA locations, flood zone designations, BFEs, political entities, cross-section locations, FIRM panel information, and other data related to the NFIP.

Entity and Attribute Detail Citation: FEMA's FIRM Database Technical Reference contains a detailed description of each attribute code and a reference to other relevant information.

Entity and Attribute Detail Citation: The following tables may be included in this data set: L_Comm_Info L_Comm_Revis L_Cst_Model L_Cst_Struct L_Cst_Tsct_Elev L_ManningsN L_Meetings L_MT2_LOMR L_Mtg_POC L_Pan_Revis L_Pol_FHBM L_Profil_Bkwtr_El L_Profil_Label L_Profil_Panel L_Source_Cit L_Summary_Discharges L_Summary_Elevations L_Survey_Pt L_XS_Elev L_XS_Struct S_Alluvial_Fan S_Base_Index S_BFE S_CBRS S_Cst_Gage S_Cst_Tsct_Ln S_Datum_Conv_Pt S_FIRM_Pan S_Fld_Haz_Ar S_Fld_Haz_Ln S_Gage S_Gen_Struct S_HWM S_Hydro_Reach S_Label_Ld S_Label_Pt S_Levee S_LiMWA S_LOMR S_Nodes S_PFD_Ln S_PLSS_Ar S_Pol_Ar S_Profil_Basln S_Riv_Mrk S_Stn_Start S_Subbasins S_Submittal_Info S_Topo_Confidence S_Trnsport_Ln S_Tsct_Basln S_Wtr_Ar S_Wtr_Ln S_XS Study_Info

Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: FEMA, Flood Map Service Center

Contact Address:

Address Type: mailing

Address: P.O. Box 3617

City: Oakton

State or Province: Virginia

Postal Code: 22124

Country: US

Contact Voice Telephone: 1-877-336-2627

Contact Electronic Mail Address: mscservices@riskmapcds.com

Contact Instructions: Data requests must include the name and FIPS code of each State or Territory covered by the request, along with an MSC account number if applicable.

Distribution Liability: No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: Esri Shapefile

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://msc.fema.gov

Fees: Contact Distributor

Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: FEMA, Flood Map Service Center

Contact Address:

Address Type: mailing

Address: P.O. Box 3617

City: Oakton

State or Province: Virginia

Postal Code: 22124

Country: US

Contact Voice Telephone: 1-877-336-2627

Contact Electronic Mail Address: mscservices@riskmapcds.com

Contact Instructions: Data requests must include the name and FIPS code of each State or Territory covered by the request, along with an MSC account number if applicable.

Distribution Liability: No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: fGDB

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://msc.fema.gov

Fees: Contact Distributor

Metadata Reference Information:

Metadata Date: 20251231

Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Federal Emergency Management Agency

Contact Person: Flood Map Service Center

Contact Address:

Address Type: mailing

Address: 500 C Street, S.W.

City: Washington

State or Province: District of Columbia

Postal Code: 20472

Country: US

Contact Voice Telephone: 1-877-336-2627

Contact Electronic Mail Address: mscservices@riskmapcds.com

Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata Standard Version: FGDC-STD-001-1998

Metadata Time Convention: local time