Topographic Low Confidence Areas
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: 2025-09-29T02:31:36.216000+00:00
publisher: FEMA AGOL
keyword: FGDC
keyword: GDA
keyword: NGDA
landing page: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/FEMA::topographic-low-confidence-areas-1

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: 2025-09-29T13:47:50.821259
modified: 2025-09-29T13:47:50.813534
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/definition

CSV
type: Distribution
format: CSV
issued: 2025-09-29T13:47:50.821266
modified: 2025-09-29T13:47:50.813979
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/csv

GeoJSON
type: Distribution
format: GeoJSON
issued: 2025-09-29T13:47:50.821268
modified: 2025-09-29T13:47:50.814127
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/geojson

ISO 19139 HTML Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-09-29T13:47:50.821251
modified: 2025-09-29T13:47:50.812930
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: 2025-09-29T13:47:50.821248
modified: 2025-09-29T13:47:50.812697
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: 2025-09-29T13:47:50.821246
modified: 2025-09-29T13:47:50.812502
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

Shapefile
type: Distribution
format: ZIP
issued: 2025-09-29T13:47:50.821267
modified: 2025-09-29T13:47:50.814054
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/shapefile

ISO 19139 Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-09-29T13:47:50.821250
modified: 2025-09-29T13:47:50.812854
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

ISO 19115
type: Distribution
description: Metadata description in ISO 19115 format
format: XML
issued: 2025-09-29T13:47:50.821249
modified: 2025-09-29T13:47:50.812775
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: 2025-09-29T13:47:50.821258
modified: 2025-09-29T13:47:50.813458
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/rss/2.0

Metadata description in Inspire format
type: Distribution
description: Metadata description in INSPIRE Metadata Directive format
format: XML
issued: 2025-09-29T13:47:50.821247
modified: 2025-09-29T13:47:50.812587
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

KML
type: Distribution
format: KML
issued: 2025-09-29T13:47:50.821269
modified: 2025-09-29T13:47:50.814199
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/ae38b6f94eaf4abf97f986fa01921e13/kml

DCAT 1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 1.1 Implementation format
issued: 2025-09-29T13:47:50.821254
modified: 2025-09-29T13:47:50.813158
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-us/1.1
media type: text/json

OGC API - Records Item
type: Distribution
description: Provides an OGC API - Records item compliant representation of this resource in JSON format.
issued: 2025-09-29T13:47:50.821260
modified: 2025-09-29T13:47:50.813609
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/ae38b6f94eaf4abf97f986fa01921e13
media type: text/json

ArcGIS GeoService
type: Distribution
format: ArcGIS GeoServices REST API
issued: 2025-09-29T13:47:50.821263
modified: 2025-09-29T13:47:50.813830
access URL: https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer/6

CSDGM
type: Distribution
description: Metadata description in FGDC CSDGM format
format: XML
issued: 2025-09-29T13:47:50.821243
modified: 2025-09-29T13:47:50.812388
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

DCAT 3.0.0 Metadata Description
type: Distribution
description: Metadata description in DCAT 3.0.0 Implementation format
issued: 2025-09-29T13:47:50.821257
modified: 2025-09-29T13:47:50.813384
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/3.0.0
media type: text/json

ESRI ArcGIS Metadata Description
type: Distribution
description: Metadata description in ESRI ArcGIS XML Implementation format
format: XML
issued: 2025-09-29T13:47:50.821253
modified: 2025-09-29T13:47:50.813083
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

ArcGIS Hub Dataset
type: Distribution
format: HTML
issued: 2025-09-29T13:47:50.821262
modified: 2025-09-29T13:47:50.813756
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/FEMA::topographic-low-confidence-areas-1

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: 2025-09-29T13:47:50.821252
modified: 2025-09-29T13:47:50.813006
access URL: https://www.arcgis.com/sharing/rest/content/items/ae38b6f94eaf4abf97f986fa01921e13/info/metadata/metadata.xml

DCAT 2.0.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.0.1 Implementation format
issued: 2025-09-29T13:47:50.821255
modified: 2025-09-29T13:47:50.813234
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.0.1
media type: text/json

OGC WFS
type: Distribution
format: OGC WFS
issued: 2025-09-29T13:47:50.821265
modified: 2025-09-29T13:47:50.813905
access URL: https://hazards.fema.gov/arcgis/services/public/NFHL/MapServer/WFSServer

DCAT 2.1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.1.1 Implementation format
issued: 2025-09-29T13:47:50.821256
modified: 2025-09-29T13:47:50.813309
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.1.1
media type: text/json

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: 2025-09-29T13:47:50.821261
modified: 2025-09-29T13:47:50.813683
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/ae38b6f94eaf4abf97f986fa01921e13