Data.gov Program Management Office Data.gov Program Management Office

created Feb 18, 2011

updated May 10, 2013

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Description

"FEMA NFHL" is a general application that provides for the display of flood hazard zones, floodways, Coastal Barrier Resources System and Otherwise Protected Area units, community boundaries and names, base flood elevations, cross sections and coastal transects and their labels, hydraulic and flood control structures, and Flood Insurance Rate Map and Letter of Map Revision boundaries and numbers. Additional reference layers include the status of NFHL data availability, point locations for Letters of Map Amendment (LOMAs) and Letters of Map Revision Based on Fill (LOMR-Fs), Q3 base flood, and sub-basin hydrologic units. You control the information displayed by turning layers on and off. A basic knowledge of Google Earth and FEMA flood hazard information will help users of this application.The name of each layer is hyperlinked to a description of the layer, the map symbols used for the layer, and links to other FEMA web sites relevant to the layer. If a layer is turned on, clicking the text below the name of the layer (text that starts with "Draws at...") zooms the Google Earth view to a sample display of the layer. Layers are organized for display at one or more of three "eye altitude" (map scale) ranges in Google Earth: status maps and subbasins at high altitudes, regional overviews of flood hazards at medium altitudes, and detailed flood hazard maps at low altitudes. Click on the hyperlinked folder name of the application to see the altitudes at which data in the layers are displayed.

Activity
Community Rating
Current value: 0.0 out of 5
Your Rating
Current value: out of 5
Raters
0
Visits
6410
Downloads
2668
Comments
2
Contributors
0
Meta
Category
Geography and Environment
Permissions
Public
Tags
Base Flood Elevation, structure, Riverine Flooding, CBRS, environment, hydrology, Floodway, DFIRM, FIRM, inlandWaters, Flood Insurance Rate Map, Federal Emergency Management Agency, FEMA Flood Hazard Zone, Digital Flood Insurance Rate Map, Coastal Flooding, Special Flood Hazard Area, NFIP, flood, Coastal Barrier Resources System, transportation, FEMA, DFIRM Database, SFHA, elevation
Licensing and Attribution
Data Provided By
Federal Emergency Management Agency
Source Link
(none)
Dataset Summary
Agency
Department of Homeland Security
Sub-Agency
Federal Emergency Management Agency
Date Released
June 16, 2010
Date Updated
November 18, 2010
Time Period
This is a web map service (WMS) which is regularly updated with the most current information pertaining to the National Flood Hazard Layer (NFHL).
Frequency
Daily
High Value Dataset
Y
Suggested by Public
N
Dataset Information
Data.gov Data Category Type
Raw Data Catalog
Specialized Data Category Designation
Geospatial
Unique ID
2408
Extended Type
Raw Data
Dataset Coverage
Unit of Analysis
It provides for the display of flood hazard zones, floodways, Coastal Barrier Resources System and Otherwise Protected Area units, community boundaries and names, base flood elevations, cross sections and coastal transects and their labels, hydraulic and flood control structures, and Flood Insurance Rate Map and Letter of Map Revision boundaries and numbers. Additional reference layers include the status of NFHL data availability, point locations for Letters of Map Amendment (LOMAs) and Letters of Map Revision Based on Fill (LOMRBFs)
Granularity
Hydraulic Flood Control Structures
Geographic Coverage
United States, Territories
Data Quality
Data Quality Certification
Yes
Privacy and Confidentiality
Yes
Applicable Information Quality Guideline Designation
Department of Homeland Security
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Data.gov Program Management Office Data.gov Program Management Office

created Feb 18, 2011

updated May 10, 2013

Description

"FEMA NFHL" is a general application that provides for the display of flood hazard zones, floodways, Coastal Barrier Resources System and Otherwise Protected Area units, community boundaries and names, base flood elevations, cross sections and coastal transects and their labels, hydraulic and flood control structures, and Flood Insurance Rate Map and Letter of Map Revision boundaries and numbers. Additional reference layers include the status of NFHL data availability, point locations for Letters of Map Amendment (LOMAs) and Letters of Map Revision Based on Fill (LOMR-Fs), Q3 base flood, and sub-basin hydrologic units. You control the information displayed by turning layers on and off. A basic knowledge of Google Earth and FEMA flood hazard information will help users of this application.The name of each layer is hyperlinked to a description of the layer, the map symbols used for the layer, and links to other FEMA web sites relevant to the layer. If a layer is turned on, clicking the text below the name of the layer (text that starts with "Draws at...") zooms the Google Earth view to a sample display of the layer. Layers are organized for display at one or more of three "eye altitude" (map scale) ranges in Google Earth: status maps and subbasins at high altitudes, regional overviews of flood hazards at medium altitudes, and detailed flood hazard maps at low altitudes. Click on the hyperlinked folder name of the application to see the altitudes at which data in the layers are displayed.

Activity
Community Rating
Current value: 0.0 out of 5
Your Rating
Current value: out of 5
Raters
0
Visits
6410
Downloads
2668
Comments
2
Contributors
0
Meta
Category
Geography and Environment
Permissions
Public
Tags
Base Flood Elevation, structure, Riverine Flooding, CBRS, environment, hydrology, Floodway, DFIRM, FIRM, inlandWaters, Flood Insurance Rate Map, Federal Emergency Management Agency, FEMA Flood Hazard Zone, Digital Flood Insurance Rate Map, Coastal Flooding, Special Flood Hazard Area, NFIP, flood, Coastal Barrier Resources System, transportation, FEMA, DFIRM Database, SFHA, elevation
Licensing and Attribution
Data Provided By
Federal Emergency Management Agency
Source Link
(none)
Dataset Summary
Agency
Department of Homeland Security
Sub-Agency
Federal Emergency Management Agency
Date Released
June 16, 2010
Date Updated
November 18, 2010
Time Period
This is a web map service (WMS) which is regularly updated with the most current information pertaining to the National Flood Hazard Layer (NFHL).
Frequency
Daily
High Value Dataset
Y
Suggested by Public
N
Dataset Information
Data.gov Data Category Type
Raw Data Catalog
Specialized Data Category Designation
Geospatial
Unique ID
2408
Extended Type
Raw Data
Dataset Coverage
Unit of Analysis
It provides for the display of flood hazard zones, floodways, Coastal Barrier Resources System and Otherwise Protected Area units, community boundaries and names, base flood elevations, cross sections and coastal transects and their labels, hydraulic and flood control structures, and Flood Insurance Rate Map and Letter of Map Revision boundaries and numbers. Additional reference layers include the status of NFHL data availability, point locations for Letters of Map Amendment (LOMAs) and Letters of Map Revision Based on Fill (LOMRBFs)
Granularity
Hydraulic Flood Control Structures
Geographic Coverage
United States, Territories
Data Quality
Data Quality Certification
Yes
Privacy and Confidentiality
Yes
Applicable Information Quality Guideline Designation
Department of Homeland Security