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Hazus

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 and hurricanes. 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 earthquake, hurricane and floods. 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 Modernization

As part of an effort to modernize Hazus, a number of updates have been released or are in progress. The first update was released in January 2015 and provided compatibility of Hazus with ArcGIS 10.2.2 and Windows 8. A service pack to the January release was put out in May 2015 and features several enhancements to the flood module. This included the application of dasymetric General Building Stock (GBS) approach and the implementation of study region aggregation at the custom jurisdiction or neighborhood level. Later in Hazus Modernization, the underlying code of Hazus will be re-architected to align with current practices, enabling future development.

For more information about the Modernization effort, follow the Hazus program on Twitter or LinkedIn and subscribe to receive Hazus program updates, or contact the Hazus Outreach team at hazus@arcaspicio.com. For more information about the Modernization effort, follow the Hazus program on Twitter or LinkedIn and subscribe to receive Hazus program updates, or contact the Hazus Outreach team at hazus@arcaspicio.com.

Download the Software

Hazus-MH operates on Esri’s ArcGIS product. Click on the "Hazus-MH Application" link below to download the software. Internet Explorer and Mozilla Firefox web browsers are recommended to perform the download. Google Chrome is not supported. The latest version of Hazus-MH (2.2), must be installed with ArcGIS 10.2.2

Note: If you upgraded your Hazus software with 2.2 SP01 prior to 10AM Eastern Time on May 26th, you must update an .mdb file that may lead to inaccuracies in the flood data folder of your Hazus Application Installation Directory: flDmRsFn.mdb. Copy and save the file into the DATA\FL\ folder of your Hazus Application Install Directory, which typically looks something like this: C:\Program Files\Hazus-MH\DATA\FL. When a window pops up asking "Do you want to replace this file," click yes. If you already created a study region using the patch with the incorrect database, you will need to create a new study region with the new database. The previous study region should be deleted and any analysis rerun in the new study region. If you updated the Hazus software with SP01 after 10AM Eastern Time on May 26th, you have the correct .mdb file and do not need to take any action.

International users may download the Hazus-MH 2.2 software, but not the U.S. state or territory datasets. International users who require technical assistance downloading the software may email the FEMA Map Information eXchange (FMIX) at FEMAMapSpecialist@riskmapcds.com.

The entire US state dataset and individual state datasets which have now been updated to reflect Census 2010 data are available for download below.

  • Direct Download—select the download image to begin an HTTP download.
  • Managed Download—check all the files you wish to download then select the "Start Managed Download" button.
  • Homogenous—building exposure is assumed to be uniformly (homogeneously) distributed throughout a Census block. Hazus-MH has historically used homogeneous Census data. Using these data may lead to estimating losses in sub-Census Block areas with no building exposure.
  • Dasymetric—undeveloped areas (such as area covered by bodies of water, parks, or forests) are removed from the Census blocks. The cumulative building exposure is distributed only in developed sub-Census Block areas. Use these data to more accurately produce flood loss determinations. For documentation on how the dasymetric data was produced, please contact helpdesk@support.hazus.us. Since Earthquake and Hurricane analysis use the tract level data, users of those models can choose either dataset.

Hazus Application

Hazus State Datasets

State Direct Download Managed Download
Homogenous Dasymetric Homogenous Dasymetric
Alabama DL:Direct Download Hazus Alabama Homogenous dataset DL:Direct Download Hazus Alabama Dasymetric dataset
Alaska DL:Direct Download Hazus Alaska Homogenous dataset DL:Direct Download Hazus Alaska Dasymetric dataset
Arizona DL:Direct Download Hazus Arizona Homogenous dataset DL:Direct Download Hazus Arizona Dasymetric dataset
Arkansas DL:Direct Download Hazus Arkansas Homogenous dataset DL:Direct Download Hazus Arkansas Dasymetric dataset
California DL:Direct Download Hazus California Homogenous dataset DL:Direct Download Hazus California Dasymetric dataset
Colorado DL:Direct Download Hazus Colorado Homogenous dataset DL:Direct Download Hazus Colorado Dasymetric dataset
Connecticut DL:Direct Download Hazus Connecticut Homogenous dataset DL:Direct Download Hazus Connecticut Dasymetric dataset
Delaware DL:Direct Download Hazus Delaware Homogenous dataset DL:Direct Download Hazus Delaware Dasymetric dataset
District of Columbia DL:Direct Download Hazus District of Columbia Homogenous dataset DL:Direct Download Hazus District of Columbia Dasymetric dataset
Florida DL:Direct Download Hazus Florida Homogenous dataset DL:Direct Download Hazus Florida Dasymetric dataset
Georgia DL:Direct Download Hazus Georgia Homogenous dataset DL:Direct Download Hazus Georgia Dasymetric dataset
Hawaii DL:Direct Download Hazus Hawaii Homogenous dataset DL:Direct Download Hazus Hawaii Dasymetric dataset
Idaho DL:Direct Download Hazus Idaho Homogenous dataset DL:Direct Download Hazus Idaho Dasymetric dataset
Illinois DL:Direct Download Hazus Illinois Homogenous dataset DL:Direct Download Hazus Illinois Dasymetric dataset
Indiana DL:Direct Download Hazus Indiana Homogenous dataset DL:Direct Download Hazus Indiana Dasymetric dataset
Iowa DL:Direct Download Hazus Iowa Homogenous dataset DL:Direct Download Hazus Iowa Dasymetric dataset
Kansas DL:Direct Download Hazus Kansas Homogenous dataset DL:Direct Download Hazus Kansas Dasymetric dataset
Kentucky DL:Direct Download Hazus Kentucky Homogenous dataset DL:Direct Download Hazus Kentucky Dasymetric dataset
Louisiana DL:Direct Download Hazus Louisiana Homogenous dataset DL:Direct Download Hazus Louisiana Dasymetric dataset
Maine DL:Direct Download Hazus Maine Homogenous dataset DL:Direct Download Hazus Maine Dasymetric dataset
Maryland DL:Direct Download Hazus Maryland Homogenous dataset DL:Direct Download Hazus Maryland Dasymetric dataset
Massachusetts DL:Direct Download Hazus Massachusetts Homogenous dataset DL:Direct Download Hazus Massachusetts Dasymetric dataset
Michigan DL:Direct Download Hazus Michigan Homogenous dataset DL:Direct Download Hazus Michigan Dasymetric dataset
Minnesota DL:Direct Download Hazus Minnesota Homogenous dataset DL:Direct Download Hazus Minnesota Dasymetric dataset
Mississippi DL:Direct Download Hazus Mississippi Homogenous dataset DL:Direct Download Hazus Mississippi Dasymetric dataset
Missouri DL:Direct Download Hazus Missouri Homogenous dataset DL:Direct Download Hazus Missouri Dasymetric dataset
Montana DL:Direct Download Hazus Montana Homogenous dataset DL:Direct Download Hazus Montana Dasymetric dataset
Nebraska DL:Direct Download Hazus Nebraska Homogenous dataset DL:Direct Download Hazus Nebraska Dasymetric dataset
Nevada DL:Direct Download Hazus Nevada Homogenous dataset DL:Direct Download Hazus Nevada Dasymetric dataset
New Hampshire DL:Direct Download Hazus New Hampshire Homogenous dataset DL:Direct Download Hazus New Hampshire Dasymetric dataset
New Jersey DL:Direct Download Hazus New Jersey Homogenous dataset DL:Direct Download Hazus New Jersey Dasymetric dataset
New Mexico DL:Direct Download Hazus New Mexico Homogenous dataset DL:Direct Download Hazus New Mexico Dasymetric dataset
New York DL:Direct Download Hazus New York Homogenous dataset DL:Direct Download Hazus New York Dasymetric dataset
North Carolina DL:Direct Download Hazus North Carolina Homogenous dataset DL:Direct Download Hazus North Carolina Dasymetric dataset
North Dakota DL:Direct Download Hazus North Dakota Homogenous dataset DL:Direct Download Hazus North Dakota Dasymetric dataset
Ohio DL:Direct Download Hazus Ohio Homogenous dataset DL:Direct Download Hazus Ohio Dasymetric dataset
Oklahoma DL:Direct Download Hazus Oklahoma Homogenous dataset DL:Direct Download Hazus Oklahoma Dasymetric dataset
Oregon DL:Direct Download Hazus Oregon Homogenous dataset DL:Direct Download Hazus Oregon Dasymetric dataset
Pennsylvania DL:Direct Download Hazus Pennsylvania Homogenous dataset DL:Direct Download Hazus Pennsylvania Dasymetric dataset
Puerto Rico DL:Direct Download Hazus Puerto Rico Homogenous dataset DL:Direct Download Hazus Puerto Rico Dasymetric dataset
Rhode Island DL:Direct Download Hazus Rhode Island Homogenous dataset DL:Direct Download Hazus Rhode Island Dasymetric dataset
South Carolina DL:Direct Download Hazus South Carolina Homogenous dataset DL:Direct Download Hazus South Carolina Dasymetric dataset
South Dakota DL:Direct Download Hazus South Dakota Homogenous dataset DL:Direct Download Hazus South Dakota Dasymetric dataset
Tennessee DL:Direct Download Hazus Tennessee Homogenous dataset DL:Direct Download Hazus Tennessee Dasymetric dataset
Texas DL:Direct Download Hazus Texas Homogenous dataset DL:Direct Download Hazus Texas Dasymetric dataset
Utah DL:Direct Download Hazus Utah Homogenous dataset DL:Direct Download Hazus Utah Dasymetric dataset
Vermont DL:Direct Download Hazus Vermont Homogenous dataset DL:Direct Download Hazus Vermont Dasymetric dataset
Virginia DL:Direct Download Hazus Virginia Homogenous dataset DL:Direct Download Hazus Virginia Dasymetric dataset
Washington DL:Direct Download Hazus Washington Homogenous dataset DL:Direct Download Hazus Washington Dasymetric dataset
West Virginia DL:Direct Download Hazus West Virginia Homogenous dataset DL:Direct Download Hazus West Virginia Dasymetric dataset
Wisconsin DL:Direct Download Hazus Wisconsin Homogenous dataset DL:Direct Download Hazus Wisconsin Dasymetric dataset
Wyoming DL:Direct Download Hazus Wyoming Homogenous dataset DL:Direct Download Hazus Wyoming Dasymetric dataset
All States Part 1 (AL to MO) DL:Direct Download Hazus All States Part 1 (AL to MO) Homogenous dataset DL:Direct Download Hazus All States Part 1 (AL to MO) Dasymetric dataset
All States Part 2 (MT to WY) DL:Direct Download Hazus All States Part 2 (MT to WY) Homogenous dataset DL:Direct Download Hazus All States Part 2 (MT to WY) Dasymetric dataset

Additional Resources