FEMA’s Methodology for Estimating Potential Losses from Disasters

Hazus is a nationally applicable standardized methodology that contains models for estimating potential losses from earthquakes, floods, hurricanes, and tsunamis. Hazus uses Geographic Information Systems (GIS) technology to estimate physical, economic, and social impacts of disasters. It graphically illustrates the limits of identified high-risk locations due to earthquakes, hurricanes, floods, and tsunamis. Users can then visualize the spatial relationships between populations and other more permanently fixed geographic assets or resources for the specific hazard being modeled, a crucial function in the pre-disaster planning process.

For more information about the Hazus program, please visit the Hazus home page. From there, you can learn how to:

Download Hazus

Users may select the "Hazus Application" link below to download the latest version of the software. As an alternative, you may opt to manage the download and select the items you wish to obtain.

Hazus 6.1 must be installed with ArcGIS 10.8.2.

NOTE: For detailed instructions on how to get started with Hazus 6.1, please see the "Hazus 6.1 Getting Started Guide" and "Hazus 6.1 Installation & Testing Guide" available with the software download.

FEMA's Hazus 6.1 release had major inventory data, methodology, and software improvements. As a result, all previously existing state databases must be removed and replaced with the new state data available below.

Users wishing to preserve their study regions to re-run in Hazus 6.1 will not be able to do so. Instead, users are encouraged to re-create and re-run analyses using the latest Hazus 6.1 software and state databases.

If necessary, users can save and export any enhanced state databases or study regions from your previous Hazus version(s) to a known file location. Users will only be able to view and export data from older study regions.

For more information, please refer to the "Hazus 6.1 Getting Started Guide", "Hazus 6.1 Installation Guide", and "Hazus 6.1 Uninstallation Guide".

If you require assistance downloading the software, please email the Hazus Help Desk at FEMA-Hazus-Support@fema.dhs.gov.

State Direct Download Managed Download
Alabama DL:Direct Download Hazus Alabama dataset
Alaska DL:Direct Download Hazus Alaska dataset
Arizona DL:Direct Download Hazus Arizona dataset
Arkansas DL:Direct Download Hazus Arkansas dataset
American Samoa DL:Direct Download Hazus American Samoa dataset
California DL:Direct Download Hazus California dataset
Colorado DL:Direct Download Hazus Colorado dataset
Connecticut DL:Direct Download Hazus Connecticut dataset
Delaware DL:Direct Download Hazus Delaware dataset
District of Columbia DL:Direct Download Hazus District of Columbia dataset
Florida DL:Direct Download Hazus Florida dataset
Georgia DL:Direct Download Hazus Georgia dataset
Guam DL:Direct Download Hazus Guam dataset
Hawaii DL:Direct Download Hazus Hawaii dataset
Idaho DL:Direct Download Hazus Idaho dataset
Illinois DL:Direct Download Hazus Illinois dataset
Indiana DL:Direct Download Hazus Indiana dataset
Iowa DL:Direct Download Hazus Iowa dataset
Kansas DL:Direct Download Hazus Kansas dataset
Kentucky DL:Direct Download Hazus Kentucky dataset
Louisiana DL:Direct Download Hazus Louisiana dataset
Maine DL:Direct Download Hazus Maine dataset
Northern Mariana Islands DL:Direct Download Hazus Northern Mariana Islands dataset
Maryland DL:Direct Download Hazus Maryland dataset
Massachusetts DL:Direct Download Hazus Massachusetts dataset
Michigan DL:Direct Download Hazus Michigan dataset
Minnesota DL:Direct Download Hazus Minnesota dataset
Mississippi DL:Direct Download Hazus Mississippi dataset
Missouri DL:Direct Download Hazus Missouri dataset
Montana DL:Direct Download Hazus Montana dataset
Nebraska DL:Direct Download Hazus Nebraska dataset
Nevada DL:Direct Download Hazus Nevada dataset
New Hampshire DL:Direct Download Hazus New Hampshire dataset
New Jersey DL:Direct Download Hazus New Jersey dataset
New Mexico DL:Direct Download Hazus New Mexico dataset
New York DL:Direct Download Hazus New York dataset
North Carolina DL:Direct Download Hazus North Carolina dataset
North Dakota DL:Direct Download Hazus North Dakota dataset
Ohio DL:Direct Download Hazus Ohio dataset
Oklahoma DL:Direct Download Hazus Oklahoma dataset
Oregon DL:Direct Download Hazus Oregon dataset
Pennsylvania DL:Direct Download Hazus Pennsylvania dataset
Puerto Rico DL:Direct Download Hazus Puerto Rico dataset
Rhode Island DL:Direct Download Hazus Rhode Island dataset
South Carolina DL:Direct Download Hazus South Carolina dataset
South Dakota DL:Direct Download Hazus South Dakota dataset
Tennessee DL:Direct Download Hazus Tennessee dataset
Texas DL:Direct Download Hazus Texas dataset
Utah DL:Direct Download Hazus Utah dataset
Vermont DL:Direct Download Hazus Vermont dataset
Virginia DL:Direct Download Hazus Virginia dataset
U.S. Virgin Islands DL:Direct Download Hazus U.S. Virgin Islands dataset
Washington DL:Direct Download Hazus Washington dataset
West Virginia DL:Direct Download Hazus West Virginia dataset
Wisconsin DL:Direct Download Hazus Wisconsin dataset
Wyoming DL:Direct Download Hazus Wyoming dataset
Package 1 - FEMA Regions 1, 2, 3 DL:Direct Download Hazus Package 1 - FEMA Regions 1, 2, 3 dataset
Package 2 - FEMA Region 4 DL:Direct Download Hazus Package 2 - FEMA Region 4 dataset
Package 3 - FEMA Region 5 DL:Direct Download Hazus Package 3 - FEMA Region 5 dataset
Package 4 - FEMA Region 6 DL:Direct Download Hazus Package 4 - FEMA Region 6 dataset
Package 5 - FEMA Regions 7, 8 DL:Direct Download Hazus Package 5 - FEMA Regions 7, 8 dataset
Package 6 - FEMA Regions 9, 10 DL:Direct Download Hazus Package 6 - FEMA Regions 9, 10 dataset

The Hazus Tsunami model requires users to upload their own data to run the Tsunami hazard. Hazus was designed to use adapted formats based on those used by NOAA's Pacific Marine Environmental Laboratory (PMEL) and specifically their Short-term Inundation Forecast for Tsunami (SIFT) product. This folder contains sample Tsunami hazard data from PMEL SIFT for five localities: Crescent City, CA; Garibaldi, OR; Homer, AK; Kahului, HI; and Westport, WA. Each state folder contains Tsunami hazard input data required for Level 1, Level 2, and Level 3 analysis in Hazus. These files have been tested and will run in Hazus, or can be used as templates in preparing your own local Tsunami hazard data. For more information on PMEL SIFT data and the data requirements for each level of Hazus Tsunami analysis, please see the Hazus 4.0 Release Notes. Download the sample data here.

Install Instructions

Hazus software and state datasets are available free of charge. For issues accessing Hazus program resources, watch our videos on how to download and install Hazus.

Find additional technical support, contact the Hazus Help Desk.

Follow these steps to install Hazus:

  1. Make sure your system meets the system requirements listed in the tab below. This includes installing ArcGIS Desktop 10.8.2, and enabling your license and spatial analyst extension.
  2. Uninstall all existing versions of Hazus using the "Hazus 6.1 Uninstallation Guide" available with the "Hazus_App" media download.
  3. Download the latest version of Hazus and follow the installation steps in the "Hazus 6.1 Installation and Testing Guide". For additional information, check out our Hazus: Getting Started Video Playlist on YouTube.
  4. Download Hazus 6.1 state inventory data. If necessary, save and export any enhanced state databases or study regions from your previous Hazus version(s) to a known file location. Follow instructions in the "Hazus 6.1 Getting Started Guide" and "Hazus 6.1 Uninstallation Guide". All state databases downloaded prior to the Hazus 6.1 release must be replaced with new state databases for Hazus to run successfully.

System Requirements for Hazus 6.1

Hazus system requirements. Please note that hardware requirements listed here are recommendations. Hazus software will run successfully on most machine with lower speeds, disk spaces, and graphics capabilities, but processing time may increase.

Computer speed: 2.4 GHz. 8 GB RAM.

Video or graphics adapter: 24-bit video card with at least 128 MB of video memory. Screen resolution of 1078 x 768 or higher.

Disk space: About 100 GB of disk space is recommended for using Hazus. Below are examples of the storage requirements for several Hazus resources. Hazus installation files are 12 GB. Large study regions created for flood analysis are 10 GB. Large state inventory databases are 6 GB. Nationwide inventory databases area 70 GB.

Supporting Software: The operator must have Esri ArcGIS 10.8.2, Microsoft Windows 10 64-bit (Pro or Enterprise), Esri's Spatial Analyst extension is required to run for Flood and Tsunami analysis, and Windows .NET Framework 4.8.

Hazus Program Data Updates and Open Source Tools

The Hazus Team provides open source risk assessment tools and updated inventory datasets for the public. Our latest projects, described below, are aimed at leveraging best available public data, open source technology, and transparent methodology in order to increase the accessibility of data-driven risk reduction in communities across the U.S.

Open Source Tools and Data

Hazus Inventory National Database: The national database compiles all the Hazus baseline inventory data for the continental United States, Alaska, Hawaii and the U.S. Territories, into a single file that is easy to download and use with any GIS software. This dataset is designed to assist GIS professionals and the risk assessment community by making Hazus inventory data easily accessible. Download the data and read more in the data dictionary here.

National Structure Inventory (NSI 2022): The Hazus Program partnered with the U.S. Army Corps of Engineers to develop the National Structure Inventory (NSI 2022). This dataset was used in the creation of the Hazus 6.1 databases and Hazus Inventory national database. Download the data and learn more about it here.

Flood Hazard Import Tool (FHIT): allows Hazus users to rapidly access and incorporate publicly available flood hazard data from ADCIRC, and eventually other sources, into a Hazus flood analysis! Download the tool and read more about it here.

Hazus Hurricane Hazard Import Tool (HHIT): allows Hazus users to rapidly access and incorporate authoritative hurricane hazard data from Hurrevac into a Hazus hurricane analysis! Download the tool and read more about it here.

Hazus Flood Assessment Structure Tool (FAST): rapidly analyzes structure-specific flood losses using open source Python - no mapping or coding skills required! Users now have the option to run an Average Annualized Loss (AAL) analysis with the latest release of FAST. Download the tool and read more about it here.

Hazus Export Tool: extracts and summarizes Hazus risk assessment results in a handful of spreadsheets, shapefiles, and a visual report using open source Python. Download the tool and read more about it here.

Data Updates

U.S. Territories: inventory data updates enable earthquake, flood, hurricane and tsunami risk assessments in Puerto Rico and the U.S. Virgin Islands. New hurricane damage functions were developed for Puerto Rico and US Virgin Islands based on Hurricanes Irma and Maria.

Nationwide Infrastructure: a Hazus Program partnership with the Homeland Infrastructure Foundation Level Data (HIFLD) Program provides consistently updated infrastructure layers across the U.S. Check out the factsheet here.

Check out these data updates with the Hazus State Database downloads above.

Additional Resources