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:

Hazus 4.2 SP01 Release

Service Pack 01 for Hazus 4.2 was released on May 29, 2018. Download it here.

Specific enhancements include:

  • Integration of the Hazus Export Tool
  • The ability to incorporate USGS Vs30 Site Soil Characterization to the Earthquake module
  • A new view of buildings damaged by count to the Hurricane module
  • A new user-friendly interface for incorporating online DEM data in the Flood module
  • New capability to include user-defined facilities in the Hurricane module
  • Updates of all State databases based on 2018 valuations
  • New documentation for design upgrades, including case studies of recent performance and methodology changes

Additionally, defect resolutions addressed include:

  • Fixes to shelter parameters (Earthquake and Hurricane), and displaced households (Hurricane)
  • Waste water facilities mapping fix (Hurricane)
  • Severe losses no longer exceed exposure in coastal analysis (Flood)
  • Now able to assign damage functions to essential facilities (Flood)
  • When combining Earthquake and Tsunami, damage no longer underestimated for moderate seismic events
  • Fixes to the assignment of mapping schemes and building types to Essential Facilities (Hurricane)

The Florida Essential Facilities have been updated with data provided by the Florida Division of Emergency Management's (FDEM) GIS Unit that maintains a state-wide essential facility inventory including all reviewed and submitted facilities by each of the 67 Counties in the State. Metadata are available here: http://geodata.floridadisaster.org

Hazus 4.2 SP01 has the same hardware and software requirements as Hazus 4.2.

Service Pack 01 for Hazus 4.2 was distributed via the Hazus Auto-Update Patching tool.

There is no need for users uninstall Hazus 4.2. If your secure network or firewall prevents the automatic download of the service pack, you can download below.

If you have questions regarding the service pack, please contact the Outreach Team at hazus-outreach@riskmapcds.com. For technical assistance or installation issues, please contact the Hazus Help Desk at hazus-support@riskmapcds.com.

Download Hazus

Domestic and international 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. Internet Explorer and Mozilla Firefox web browsers are recommended to perform the download. Google Chrome is not supported. Hazus 4.2 and above must be installed with ArcGIS 10.5.1.

NOTE: For new, FULL Hazus installations, you must uninstall any existing versions of Hazus and all Microsoft SQL components from your computer before downloading and ensure that you have ArcGIS 10.5.1 on your computer. As a result of the datum update, any existing State databases must be replaced with the new State data below.

Users wishing to preserve their study regions and transfer them to Hazus 4.2 and above may do so, but only if they are operating on the most recent version of Hazus (4.0). They will be able to follow the steps outlined in the Getting Started Guide available with the download to extract their study regions in Hazus 4.0 and then upload them into 4.2 once it is downloaded. For questions or issues, feel free to contact the Hazus Help Desk at hazus-support@riskmapcds.com.

For the Tsunami Module, users must supply their own data for analysis. To assist in preparing this data, the Hazus Team has provided five case study datasets for users, which are available at the bottom of this page for download through a zip file. Users can model their own datasets after these samples.

If you require assistance downloading the software, please email the FEMA Map Information eXchange (FMIX) at FEMAMapSpecialist@riskmapcds.com.

The release of Hazus 4.2 SP01 has made updates to the below datasets. The entire US state dataset and individual state datasets, which have now been updated to reflect Census 2010 data, are available for download below. Note the datasets are not available for delivery outside of the US.

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
All States Part 1 (AL to MO) DL:Direct Download Hazus All States Part 1 (AL to MO) dataset
All States Part 2 (MT to WY) DL:Direct Download Hazus All States Part 2 (MT to WY) dataset
Puerto Rico 2.1 DL:Direct Download Hazus Puerto Rico 2.1 dataset

Puerto Rico 2.1 data was developed by a third party and is not supported by FEMA or the Hazus Program at this time. The data is available only for use with version 2.1 of the Hazus software, which requires version 10.0 of ArcGIS. This version of the dataset is also based on 2000 Census Data, and no additional documentation is available. If you need assistance in obtaining a copy of Hazus 2.1, please contact the Hazus Help Desk at hazus-outreach@riskmapcds.com

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.

Hazus 4.0 Hurricane Wind Patch

A patch is now available for the Hazus 4.0 Hurricane Wind model, fixing two defects: underestimation of losses for manufactured housing, and overestimation of losses for large and medium hospital facilities. Click HERE to download the patch. To install the patch, follow these steps:

  1. Download the patch and unzip to your local machine in the C:\ProgramFiles(x86)\Hazus folder
  2. Navigate to the folder where the patch was unzipped. The extracted files will be in a folder called "HuPatch_v2." Please note, some extractors will create a second subfolder with the same name, and the patch files will be located there.

  3. Open the folder HuPatch_v2 which contains the patch files.

  4. Double-click on the executable file called HuPatch40SP1 to launch the patch. A message will display when the patch installation has successfully completed.

Please note: If Hazus is not installed in C:\ProgramFiles(x86)\Hazus, or is only a partial install, a message will display that Hazus cannot be found on the machine. If this occurs, please contact the Hazus Help Desk for assistance in deploying the patch.

Additional Resources