FEMA Disaster Declarations Summary is a summarized dataset describing all federally declared disasters. This dataset lists all official FEMA Disaster Declarations, beginning with the first disaster declaration in 1953 and features all three disaster declaration types: major disaster, emergency, and fire management assistance. The dataset includes declared recovery programs and geographic areas (county not available before 1964; Fire Management records are considered partial due to historical nature of the dataset).rnrnPlease note the unique structure of the disaster sequencing (due to a numbering system that originated in the 1950's-1970's):rn0001-1999 Major Disaster Declarationrn2000-2999 Fire Managementrn3000-3999 Emergency Declaration (Special Emergency)rn4000- Major Disaster DeclarationrnrnFor more information on the disaster declaration process, see https://www.fema.gov/disasters and https://www.fema.gov/disasters/how-declared rnrnThis is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error. The dataset is primarily composed of historical data that was manually entered into NEMIS after it launched in 1998. The financial information is derived from NEMIS and not FEMA's official financial systems.rnrnDue to differences in reporting periods, status of obligations, and how business rules are applied, this financial information may differ slightly from official publication on public websites such as www.usaspending.gov. This dataset is not intended to be used for any official federal financial reporting.rnrnA newer version of this OpenFEMA data set has been released. This older dataset version will no longer be updated and will be archived by the end of April 2020. The following page details the latest version of this data set: https://www.fema.gov/openfema-dataset-disaster-declarations-summaries-v2. CSV and JSON Files can be downloaded from the 'Full Data' section.rnrnTo access the dataset through an API endpoint, visit the 'API Endpoint' section of the above page. Accessing data in this fashion permits data filtering, sorting, and field selection. The OpenFEMA API Documentation page provides information on API usage. rnrnIf you have media inquiries about this dataset please email the FEMA News Desk FEMA-News-Desk@dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open government program please contact the OpenFEMA team via email OpenFEMA@fema.dhs.gov.

This data set contains financial assistance values, including the number of approved applications, as well as individual, public assistance, and hazard mitigation grant amounts.rnrnThis is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error. The financial information is derived from NEMIS and not FEMA's official financial systems. Due to differences in reporting periods, status of obligations and how business rules are applied, this financial information may differ slightly from official publication on public websites such as usaspending.gov; this dataset is not intended to be used for any official federal financial reporting.rnrnIf you have media inquiries about this dataset please email the FEMA News Desk FEMA-News-Desk@dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open government program please contact the OpenFEMA team via email OpenFEMA@fema.dhs.gov.

NSGIC Data Citation:This project uses existing FEMA data resources that are the authoritative sources of information on this topic, including geospatial data files and open data APIs that were used to access available FEMA Federally-declared Natural Disaster data in the United States available from 1964 to 2014 (through 2013).To support our mapping needs, NSGIC downloaded a snapshot of FEMA data and published our own data Service Definitions and Feature Layers on NSGIC’s ArcGIS Online Mapping Platform to create the unfiltered Feature Layer Services we needed to support our mapping needs of the FEMA Federally Declared Disaster data.Note: These original data sources reflect a variety of inconsistencies and completeness is data collection, as well as changing definitions and priorities in FEMA’s disaster declaration information collection since record-keeping began in 1964. The original data was not modified.To publish the new Feature Layers on ArcGIS Online, NSGIC joined the FEMA Natural Disaster data with an Esri US County polygon shapefile with county population and demographic attributes from the U.S. Census Bureau’s American Community Survey. NSGIC added the 2010 and 2015 population estimates from the Census Bureau’s American Community Survey to relate the impacts of every declared natural disaster to current time frame.A significant portion of the available attribute data is not displayed in the NSGIC interactive maps, but is accessible through the site by experienced users.More recent data may be available from the original sourcesFEMA Data Citation:Data for this project was downloaded from FEMA in April 2016 and reflects the data available at that time using the available APIs.This product uses the Federal Emergency Management Agency’s API, but is not endorsed by FEMA.FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.NSGIC Data Citation:This project uses existing FEMA data resources that are the authoritative sources of information on this topic, including geospatial data files and open data APIs that were used to access available FEMA Federally-declared Natural Disaster data in the United States available from 1964 to 2014 (through 2013).To support our mapping needs, NSGIC downloaded a snapshot of FEMA data and published our own data Service Definitions and Feature Layers on NSGIC’s ArcGIS Online Mapping Platform to create the unfiltered Feature Layer Services we needed to support our mapping needs of the FEMA Federally Declared Disaster data.Note: These original data sources reflect a variety of inconsistencies and completeness is data collection, as well as changing definitions and priorities in FEMA’s disaster declaration information collection since record-keeping began in 1964. The original data was not modified.To publish the new Feature Layers on ArcGIS Online, NSGIC joined the FEMA Natural Disaster data with an Esri US County polygon shapefile and included the available county population and demographic attributes from the U.S. Census Bureau’s American Community Survey. A significant portion of the available attribute data is not displayed in the NSGIC interactive maps, but is accessible through the site by experienced users.More recent data may be available from the original sourcesFEMA Data Citation:Data for this project was downloaded from FEMA in April 2016 and reflects the data available at that time using the available APIs.This product uses the Federal Emergency Management Agency’s API, but is not endorsed by FEMA.FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.

This dataset lists all official FEMA Disaster Declarations. This is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error. The dataset is primarily composed of historical data that was manually entered into NEMIS. The NEMIS system started in 1998.

County Disaster Declaration detailed declaration records developed from FEMA Historic Disasters Declaration by County 1964 - 2013 for NSGIC resiliency project.NSGIC Data Citation:This project uses existing FEMA data resources that are the authoritative sources of information on this topic, including geospatial data files and open data APIs that were used to access available FEMA Federally-declared Natural Disaster data in the United States available from 1964 to 2014 (through 2013).To support our mapping needs, NSGIC downloaded a snapshot of FEMA data and published our own data Service Definitions and Feature Layers on NSGIC’s ArcGIS Online Mapping Platform to create the unfiltered Feature Layer Services we needed to support our mapping needs of the FEMA Federally Declared Disaster data.Note: These original data sources reflect a variety of inconsistencies and completeness is data collection, as well as changing definitions and priorities in FEMA’s disaster declaration information collection since record-keeping began in 1964. The original data was not modified.To publish the new Feature Layers on ArcGIS Online, NSGIC joined the FEMA Natural Disaster data with an Esri US County polygon shapefile with county population and demographic attributes from the U.S. Census Bureau’s American Community Survey. NSGIC added the 2010 and 2015 population estimates from the Census Bureau’s American Community Survey to relate the impacts of every declared natural disaster to current time frame.A significant portion of the available attribute data is not displayed in the NSGIC interactive maps, but is accessible through the site by experienced users.More recent data may be available from the original sourcesFEMA Data Citation:Data for this project was downloaded from FEMA in April 2016 and reflects the data available at that time using the available APIs.This product uses the Federal Emergency Management Agency’s API, but is not endorsed by FEMA.FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.NSGIC Data Citation:This project uses existing FEMA data resources that are the authoritative sources of information on this topic, including geospatial data files and open data APIs that were used to access available FEMA Federally-declared Natural Disaster data in the United States available from 1964 to 2014 (through 2013).To support our mapping needs, NSGIC downloaded a snapshot of FEMA data and published our own data Service Definitions and Feature Layers on NSGIC’s ArcGIS Online Mapping Platform to create the unfiltered Feature Layer Services we needed to support our mapping needs of the FEMA Federally Declared Disaster data.Note: These original data sources reflect a variety of inconsistencies and completeness is data collection, as well as changing definitions and priorities in FEMA’s disaster declaration information collection since record-keeping began in 1964. The original data was not modified.To publish the new Feature Layers on ArcGIS Online, NSGIC joined the FEMA Natural Disaster data with an Esri US County polygon shapefile and included the available county population and demographic attributes from the U.S. Census Bureau’s American Community Survey. A significant portion of the available attribute data is not displayed in the NSGIC interactive maps, but is accessible through the site by experienced users.More recent data may be available from the original sourcesFEMA Data Citation:Data for this project was downloaded from FEMA in April 2016 and reflects the data available at that time using the available APIs.This product uses the Federal Emergency Management Agency’s API, but is not endorsed by FEMA.FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.

The dataset contains disaster level financial information for FEMA's Hazard Mitigation Grant Program (HMGP). The purpose of HMGP is to help communities implement hazard mitigation measures following a Presidential Major Disaster Declaration in the areas of the State, Tribe, or Territory requested by the Governor or Tribal Executive. For more information on the Hazard Mitigation Grant Program, please visit: https://www.fema.gov/grants/mitigationrnrnAdditional disaster level information can be found here: https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2rnrnInformation on projects funded under the Hazard Mitigation Grant Program can found here: https://www.fema.gov/openfema-data-page/hazard-mitigation-assistance-projects-v2rnrnThis is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error. The financial information is derived from NEMIS and not FEMA's official financial systems. Due to differences in reporting periods, status of obligations and how business rules are applied, this financial information may differ slightly from official publication on public websites such as usaspending.gov; this dataset is not intended to be used for any official federal financial reporting.rnrnMissing values - In some cases data was not provided by the subgrantee (subrecipient), grantee (recipient) and/or entered into the FEMA mitigation grant systems. The information is likely available as part of the paper file which is considered the file of record.rnrnIf you have media inquiries about this dataset, please email the FEMA News Desk at FEMA-News-Desk@dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov.

The FEMA Disaster Declarations Summary is a summarized dataset describing all federally declared disasters, starting with the first disaster declaration in 1953, featuring all three disaster declaration types: major disaster, emergency and fire management assistance.

FEMA provides supplemental Federal disaster grant assistance for debris removal, emergency protective measures, and the repair, replacement, or restoration of disaster-damaged, publicly owned facilities and the facilities of certain Private Non-Profit (PNP) organizations through the Public Assistance (PA) Program (CDFA Number 97.036). The PA Program also encourages protection of these damaged facilities from future events by providing assistance for 406 hazard mitigation measures during the recovery process.rnThis dataset lists all public assistance applicants (subrecipients) and a summary of the funded program support. This is raw, unedited data from FEMA's Emergency Management Mission Integrated Environment (EMMIE) and as such is subject to a small percentage of human error. The financial information is derived from EMMIE and not FEMA's official financial systems.rnDue to differences in reporting periods, status of obligations, and application of business rules, this financial information may differ slightly from official publication on public websites such as usaspending.gov. This dataset is not intended to be used for any official federal reporting.rnIf you have media inquiries about this dataset, please email the FEMA News Desk at FEMA-News-Desk@fema.dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov.

This dataset was created for the Data Visualization map on FEMA.gov/data-visualization using Agency data that was released to the public by OpenFEMA. It is created by pulling, processing and combining multiple OpenFEMA datasets (listed below) together. Merging data tables depends on common fields being present throughout each source file. For this reason many columns in the original files were not included. For example, county level details were excluded because they are not available in all the source files. Additionally, we added new columns to ensure integrity existed between the source file and the merged file. For example, we added and populated when needed Grant Bucket, Program Name, Program Abbr, and Incident Type. Open FEMA data is available at: http://www.fema.gov/media-library/resources-documents/collections/339

This data set includes the FEMA disaster tribal declarations found on fema.gov/data-visualization and was created using the publicly available disaster declarations summary dataset published by OpenFEMA, FEMA's open government program. The original Disaster Declarations dataset OpenFEMA publishes can be downloaded here http://www.fema.gov/media-library/assets/documents/28318.

The Hazard Mitigation Grant Program (HMGP, CFDA Number: 97.039) provides grants to States and local governments to implement long-term hazard mitigation measures after a major disaster declaration. The purpose of HMGP is to reduce the loss of life and property due to natural disasters and to enable mitigation measures to be implemented during the immediate recovery from a disaster. HMGP is available, when authorized under a Presidential major disaster declaration, in the areas of the State requested by the Governor.

The Public Assistance (PA) Funded Projects Details dataset contains a list of funded (obligated) PA projects, called project worksheets. Unobligated projects (still in formulation) are not represented. The Applicant ID is provided for this dataset to be used with the OpenFEMA “Public Assistance Applicants - v1” dataset.rnFEMA provides supplemental Federal disaster grant assistance for debris removal, emergency protective measures, and the repair, replacement, or restoration of disaster-damaged, publicly owned facilities and the facilities of certain Private Non-Profit (PNP) organizations through the PA Program (CDFA Number 97.036). The PA Program also encourages protection of these damaged facilities from future events by providing assistance for 406 hazard mitigation measures during the recovery process.rnThis is raw, unedited data from FEMA's Emergency Management Mission Integrated Environment (EMMIE) and as such is subject to a small percentage of human error. The financial information is derived from EMMIE and not FEMA's official financial systems. Due to differences in reporting periods, status of obligations, and application of business rules, this financial information may differ slightly from official publication on public websites such as www.usaspending.gov . This dataset is not intended to be used for any official federal reporting.rnThe data has been incorporated into a graphic visualization at Public Assistance Program Summary of Obligations: https://www.fema.gov/data-visualization/public-assistance-program-summary-obligations. Questions pertaining to the data visualizations should be addressed to EnterpriseAnalytics@fema.dhs.gov.rnIf you have media inquiries about this dataset, please email the FEMA News Desk at FEMA-News-Desk@fema.dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov.

This dataset contains EMPG recipients as reported by their State and a summary of rnthe funded program support as reported by the Recipient in the GRT.rnrnThe EMPG Program provides resources to assist state, local, tribal and territorial governments in preparing for all hazards, as authorized by Section 662 of the Post Katrina Emergency Management Reform Act (6 U.S.C § 762) and the Robert T. Stafford Disaster Relief and Emergency Assistance Act, as amended (42 U.S.C. §§ 5121 et seq.). Title VI of the Stafford Act authorizes FEMA to make grants for the purpose of providing a system of emergency preparedness for the protection of life and property in the United States from hazards, and to vest responsibility for emergency preparedness jointly in the federal government and the states and their political subdivisions. The EMPG, from FY 2016 to the present FY,provides federal funds to assist state, local, tribal and territorial emergency management agencies to obtain the resources required to support the National Preparedness Goal's (NPG's) associated mission areas and core capabilities. The Federal Government, through the EMPG Program, provides necessary direction, coordination, and guidance, and provides necessary assistance, as authorized in this title to support a comprehensive all hazards emergency preparedness system. rnrnThe EMPG is to support a comprehensive, all-hazard emergency preparedness system by building and sustaining the core capabilities contained in the NPG’s. Examples include: rnrn• Completing the Threat and Hazard Identification and Risk Assessment (THIRA)process.rn• Strengthening a state or community's emergency management governance structure.rn• Updating and approving specific emergency plans.rn• Designing and conducting exercises that enable whole community stakeholders to examine and validate core capabilities and the plans needed to deliver them to the targets identified through the THIRA.rn• Targeting training and verifying identified capabilities.rn• Initiating or achieving a whole community approach to security and emergency management. rnrnThis dataset was first made public on 10/31/2016 and will be updated twice a year. rnrnFor additional details on the EMPG program visit: https://www.fema.gov/grants/preparedness/emergency-management-performance.rnrnThis dataset is not intended to be an official federal report, and should not be considered an official federal report. rn rnCitation: The Agency’s preferred citation for datasets (API usage or file downloads) can be found on the OpenFEMA Terms and Conditions page, Citing Data section: https://www.fema.gov/about/openfema/terms-conditions.rnrnIf you have media inquiries about this dataset, please email the FEMA News Desk at FEMA-News-Desk@fema.dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov.

Overview

As coronavirus cases have exploded across the country, states have struggled to obtain sufficient personal protective equipment such as masks, face shields, gloves and ventilators to meet the needs of healthcare workers. FEMA began distributing PPE from the national stockpile as well as PPE obtained from private manufacturers to states in March.

Initially, FEMA distributed materials based primarily on population. By late March, Its methods changed to send more PPE to hotspot locations, and FEMA claimed these decisions were data-driven and need-based. By late spring, the agency was considering requests from states as well.

Although all U.S. states and territories have received some amount of PPE from FEMA, the amounts of PPE states have per capita and per positive COVID-19 case vary widely.

The AP used this data in a story that ran July 7.

Findings

• Overall, low population, rural states have the most PPE per positive case as of mid-June. This generally held true across types of equipment.
• The states that had the highest number of total PPE items per coronavirus case as of mid-May were, in descending order: Alaska, Montana, Vermont, Hawaii, Wyoming, and North Dakota. The highest was Alaska with 1,579 PPE items per coronavirus case.
• The states that had the highest number of total items per case as of mid-June were largely the same states — Montana, Alaska, Hawaii, Vermont, Wyoming, and West Virginia. The highest was Montana with 1,125 PPE items per coronavirus case.
• Conversely, the states that had the lowest amounts of PPE per positive case in mid-May included hotspot states — Massachusetts, New York, Virginia, California, Nebraska, and Iowa. New Jersey was just a couple spots further down. The lowest was Massachusetts with 36 PPE items per coronavirus case.
• The states that had the lowest amounts of PPE per case as of mid-June were largely the same as well — Massachusetts, New York, Iowa, California, and Nebraska. The lowest was Massachusetts with 32 PPE items per coronavirus case.
• When evaluated on a per-capita basis rather than per positive coronavirus case, the picture is different. The District of Columbia received the most PPE per capita in both May and June, although the vast majority of the PPE it received was distributed as of mid-May. Vermont, Kansas, New Jersey, and North Dakota had the next highest numbers of PPE per capita as of both mid-May and mid-June.
• There is no clear pattern of FEMA distribution by party control of states.

About the data

These numbers include material distributed by FEMA and also those sold by private distributors under direction from FEMA. They include materials both delivered to and en route to states.

States have purchased PPE directly in addition to receiving PPE from FEMA or directed there by the agency, and this data only includes the latter categories.

FEMA also distributed and directed the distribution of gear to U.S. territories in addition to states, which are included in FEMA’s release linked below, but not are not included in this data.

FEMA has publicly distributed its breakdown of PPE delivery by state for May and June. FEMA did not provide comprehensive numbers for each state before May.

These numbers are cumulative, meaning that the numbers for May include items of PPE distributed prior to May 14, dating to when the agency began allocations on March 1. The June numbers include the May numbers and any new PPE distributions since then.

The population column, which was used to calculate the numbers of PPE items per state, came from data from the U.S Census Bureau. Since the Census releases annual population data, population data from 2019 was used for each state.

The numbers of coronavirus cases were pulled from the data released daily by Johns Hopkins University as of the dates that FEMA released its distribution numbers — May 14 and June 10.

Caveats

The data includes amounts of gear that had been delivered to the states or were en route as of the reporting dates.

All PPE item numbers above 1 million were rounded to the nearest hundred thousand by FEMA, but numbers lower than that were not rounded.

In some cases, gear headed to a state was rerouted because it was needed more somewhere else or a state decided it did not need it. In some instances, that resulted in states having higher numbers for certain supplies in May than in June.

An overview of all current federally declared disaster counties in the country.

This data set includes plan quality data for local hazard mitigation plans (LHMPs) for 175 coastal jurisdictions adopted in accordance with the federal Disaster Mitigation Act of 2000. A coding instrument was developed in 2010 based on Federal Emergency Management Agency (FEMA) guidance documents for LHMPs and coding instruments used in previous studies of the quality of plans (e.g. Godschalk, Beatley, Berke, and Brower's Natural Hazard Mitigation: Recasting Disaster Policy and Planning 1999). The coding instrument was organized into eight sections (see below) corresponding to sections required by FEMA. Each section consisted of multiple coding items that were coded on binary or ordinal scales for use as variables in quantitative analysis. The coding instrument is available online at: http://www.ie.unc.edu/cscd/projects/dma.cfm. Plans were collected online and from local and state agencies in 2010 and 2011. Coding of the plans was conducted by a team of trained graduate research assistants with coursework in environmental and land use planning. Each plan was doubled coded and an overall inter-coder reliability score of 88% was obtained. Prior to the coding the main sample of 175 plans multiple rounds of pretesting were conducted. The eight sections include: Plan Basics, Participation, Inter-Organizational Coordination, Hazard Identification/Ris k Assessment, Capability Assessment, Goals, Proposed Actions and Implementation Information, and Monitoring

The profile baseline shows the path of flood flows on the FIRM and is an accurate representation of the distance between cross sections, structures, nodes, or grids in the hydraulic model. The profile baseline is used for replicating the stationing and water-surface elevations found in the FIS report profiles, but in GIS format. This information is used in the following tables within the FIS report: Flooding Sources Included in this FIS report, Principal Flood Problems, Summary of Hydrologic and Hydraulic Analyses, Summary of Topographic Elevation Data Used in Mapping, the Stream-by_Stream Vertical Datum Conversion, and Summary of Contracted Studies Included in this FIS Report.

This layer is a component of Region Preliminary Data.

FEMA's new Public Assistance (PA) case management system called the FEMA Applicant Case Tracker (FAC-Trax) includes the Grants Manager database and Grant Portal tool (collectively ‘Grants Manager’). rn FAC-Trax was developed in 2016 and became the processing system for all new PA grants starting on August 25, 2017. Grants Manager became a new database to document PA projects from formulation to a seamless transition to grant obligation and close-out with grant formulation being a new process not previously captured.rnThe previous database, the Emergency Management Mission Integration Environment (EMMIE) currently functions as the system for obligations with a few declarations now obligated in Grants Manager as test cases. All remaining EMMIE functions are scheduled to move to Grants Manager soon as well as the records for EMMIE and the previous database, the National Emergency Management Information System (NEMIS). rnThe 'Public Assistance Applicants Program Deliveries' dataset was generated from Grants Manager by the PA reporting team to share data on assistance made available to eligible state, local and tribal governments, and certain private nonprofit organizations as part of presidentially declared disasters. This dataset reports on the PA National Delivery Model process with summaries of projects and project statuses for all active applicants (subrecipients). The data reflects time sensitive, current phase information including pre-obligation (project formulation) phases starting in phase 2 to obligation in phase 5.rnIf you have media inquiries about this dataset, please email the FEMA News Desk at FEMA-News-Desk@fema.dhs.gov or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov.

The National Flood Hazard Layer (NFHL) data incorporates all Digital Flood Insurance Rate Map(DFIRM) databases published by FEMA, and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. The DFIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper Flood Insurance Rate Maps(FIRMs). 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 NFHL data are derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (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 the Federal Emergency Management Agency (FEMA). The specifications for the horizontal control of DFIRM data are consistent with those required for mapping at a scale of 1:12,000. The NFHL data contain layers in the Standard DFIRM datasets except for S_Label_Pt and S_Label_Ld. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all DFIRMs and corresponding LOMRs available on the publication date of the data set.

The National Flood Hazard Layer (NFHL) data incorporates all Digital Flood Insurance Rate Map(DFIRM) databases published by FEMA, and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. The DFIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper Flood Insurance Rate Maps(FIRMs). 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 NFHL data are derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (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 the Federal Emergency Management Agency (FEMA). The specifications for the horizontal control of DFIRM data are consistent with those required for mapping at a scale of 1:12,000. The NFHL data contain layers in the Standard DFIRM datasets except for S_Label_Pt and S_Label_Ld. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all DFIRMs and corresponding LOMRs available on the publication date of the data set.