Base Flood Elevations
type: Dataset
description: The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National Flood Insurance Program. You can use the information to better understand your level of flood risk and type of flooding. The simplest way for you to access the flood hazard data, including the NFHL, is through FEMAs Map Service Center (MSC). If you want to explore the current digital effective flood hazard data in a map, the best tool to use is the NFHL Viewer. From the NFHL Viewer, you may view, download, and print flood maps for your location. The NFHL is made from effective flood maps and Letters of Map Change (LOMC) delivered to communities. NFHL digital data covers over 90 percent of the U.S. population. New and revised data is being added continuously. If you need information for areas not covered by the NFHL data, there may be other FEMA Flood Hazard Products and Services which provide coverage for those areas. A list of the types of data available in the NFHL and information about other ways to access the NFHL may be found in the NFHL GIS Services User Guide. If you need more information about individual tables in the NFHL, the FIRM Database Technical Reference, found at FEMA’s Technical References, includes those details. For step-by-step instructions on how to read a flood map, you may view the How to Read a Flood Insurance Rate Map Tutorial. For more information, please visit the FEMA Flood Map Service Center.
issued: 2018-08-19T12:48:29+00:00
modified: 2024-08-22T14:13:19+00:00
publisher: FEMA AGOL
keyword: FGDC
keyword: GDA
keyword: NGDA
landing page: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/FEMA::base-flood-elevations-1

DCAT 2.0.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.0.1 Implementation format
issued: 2025-12-09T22:22:35.357060
modified: 2025-12-09T22:22:35.352240
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.0.1
media type: text/json

ISO 19115
type: Distribution
description: Metadata description in ISO 19115 format
format: XML
issued: 2025-12-09T22:22:35.357055
modified: 2025-12-09T22:22:35.351934
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

ESRI ArcGIS Metadata Description
type: Distribution
description: Metadata description in ESRI ArcGIS XML Implementation format
format: XML
issued: 2025-12-09T22:22:35.357058
modified: 2025-12-09T22:22:35.352139
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

ISO 19139-3.2 Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification GML3.2 in XML Format
format: XML
issued: 2025-12-09T22:22:35.357058
modified: 2025-12-09T22:22:35.352090
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

Feed API - Definitions Search Page
type: Distribution
description: Provides access to the API Definition page for this resource to programmatically filter DCAT US 1.1, DCAT AP 2.0.1, DCAT AP 2.1.1, DCAT 3.0.0, and RSS 2.0 compliant API's
format: JSON
issued: 2025-12-09T22:22:35.357064
modified: 2025-12-09T22:22:35.352550
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/ae38b6f94eaf4abf97f986fa01921e13

DCAT 2.1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.1.1 Implementation format
issued: 2025-12-09T22:22:35.357061
modified: 2025-12-09T22:22:35.352294
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.1.1
media type: text/json

Metadata description in Inspire format
type: Distribution
description: Metadata description in INSPIRE Metadata Directive format
format: XML
issued: 2025-12-09T22:22:35.357054
modified: 2025-12-09T22:22:35.351826
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

North American Profile
type: Distribution
description: Metadata description in North American Profile of ISO 19115 2003 format
format: XML
issued: 2025-12-09T22:22:35.357054
modified: 2025-12-09T22:22:35.351879
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

RSS Metadata Description
type: Distribution
description: Metadata description in RSS 2.0 Implementation format
format: RSS
issued: 2025-12-09T22:22:35.357062
modified: 2025-12-09T22:22:35.352397
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/feed/rss/2.0

ArcGIS GeoService
type: Distribution
format: ArcGIS GeoServices REST API
issued: 2025-12-09T22:22:35.357066
modified: 2025-12-09T22:22:35.352653
access URL: https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer/16

ISO 19139 HTML Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-12-09T22:22:35.357057
modified: 2025-12-09T22:22:35.352039
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

Metadata description in Dublin Core+ format
type: Distribution
description: Metadata description in Dublin Core+ format
format: XML
issued: 2025-12-09T22:22:35.357053
modified: 2025-12-09T22:22:35.351768
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

Shapefile
type: Distribution
format: ZIP
issued: 2025-12-09T22:22:35.357068
modified: 2025-12-09T22:22:35.352809
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/shapefile

CSDGM
type: Distribution
description: Metadata description in FGDC CSDGM format
format: XML
issued: 2025-12-09T22:22:35.357051
modified: 2025-12-09T22:22:35.351694
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

ISO 19139 Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-12-09T22:22:35.357056
modified: 2025-12-09T22:22:35.351988
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

DCAT 1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 1.1 Implementation format
issued: 2025-12-09T22:22:35.357059
modified: 2025-12-09T22:22:35.352189
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/feed/dcat-us/1.1
media type: text/json

DCAT 3.0.0 Metadata Description
type: Distribution
description: Metadata description in DCAT 3.0.0 Implementation format
issued: 2025-12-09T22:22:35.357062
modified: 2025-12-09T22:22:35.352346
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/feed/dcat-ap/3.0.0
media type: text/json

OGC WFS
type: Distribution
format: OGC WFS
issued: 2025-12-09T22:22:35.357067
modified: 2025-12-09T22:22:35.352705
access URL: https://hazards.fema.gov/arcgis/services/public/NFHL/MapServer/WFSServer

KML
type: Distribution
format: KML
issued: 2025-12-09T22:22:35.357069
modified: 2025-12-09T22:22:35.352912
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/kml

ArcGIS Hub Dataset
type: Distribution
format: HTML
issued: 2025-12-09T22:22:35.357065
modified: 2025-12-09T22:22:35.352602
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/FEMA::base-flood-elevations-1

OGC API - Records Item
type: Distribution
description: Provides an OGC API - Records item compliant representation of this resource in JSON format.
issued: 2025-12-09T22:22:35.357064
modified: 2025-12-09T22:22:35.352500
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/ae38b6f94eaf4abf97f986fa01921e13
media type: text/json

OGC API - Records API Definition Page
type: Distribution
description: This resource describes how to use the Search API to programmatically query, filter, search and retrieve resources.
format: JSON
issued: 2025-12-09T22:22:35.357063
modified: 2025-12-09T22:22:35.352449
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/search/definition

GeoJSON
type: Distribution
format: GeoJSON
issued: 2025-12-09T22:22:35.357069
modified: 2025-12-09T22:22:35.352860
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/geojson

CSV
type: Distribution
format: CSV
issued: 2025-12-09T22:22:35.357067
modified: 2025-12-09T22:22:35.352757
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/csv