Hazus Software

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This page contains information and relevant links concerning the Hazus-Multi Hazard (Hazus-MH) software application provided by FEMA.  Details of the most recent release of Hazus-MH, as well as the most recent service packs, may be found here.  This page is geared toward current and prospective users of the Hazus-MH software, including Geographic Information Systems (GIS) professionals, mitigation planners, emergency managers, risk analysts and others engaged in disaster loss estimation.

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Hazus-MH 2.1

 The 2.1 release includes many improvements to the usability and functionality of the software including:

  • Hazus-MH 2.1 is compatible with Windows 7 (32 and 64 bit) Service Pack 1 and Windows XP Service Pack 3
  • Hazus-MH 2.1 is compatible with ArcGIS 10.0 Service Pack 2. Hazus-MH 2.1 runs under Service Pack 3 but is not 100% certified
  • The underlying database engine has been upgraded to SQL Server Express 2008 R2
  • Menu options in the user interface of the three modules in Hazus-MH (Earthquake, Flood & Hurricane) have been adjusted to provide greater consistency
  • IMPLAN default data is no longer provided with Hazus-MH. Users should supply their own data for Indirect Economic Analyses
  • New damage and loss of use functions have been developed for hospitals, schools and fire stations in the Essential Facilities portion of the Hurricane Module
  • The windfields for several category 4 and 5 historical storms have been re-analyzed and updated in the Hurricane Module
  • In recognition of the uncertainties inherent in hurricane forecasts, the Coastal Surge analysis capability has been disabled for forecast/advisories issued more than 24 hours before the expected time of landfall
  • The Flood Module Average Annualized Loss (AAL) analysis has been reactivated with the following changes:
    • The 2 and 5 year return period extrapolations have been removed from the methodology
    • The 200-year return period has been replaced by a 25-year return period in the methodology
    • Refer to the Hazus–MH 2.1 Flood Technical Manual for complete details on the Flood AAL methodology
  • A riverine level 1 study region automation feature has been added to the Flood Module
  • The Flood Module is now processing Manning’s roughness coefficients dynamically based on a LULC grid as part of the Develop Stream Network process
  • The Flood Module Hydraulics process has been optimized for scenarios where a suite of return periods is being analyzed
  • Occupancy Mapping Schemes have been updated for the Earthquake Module
  • The Earthquake Ground Motion Module has been updated to use the latest USGS Next Generation Attenuation (NGA) functions
  • The Earthquake Module now includes a feature to analyze study regions greater than the 8 GB limit of SQL Server Express

Download Hazus-MH 2.1

Download the latest version of Hazus free-of-charge online by visiting the FEMA Flood Map Service Center (MSC) at msc.fema.gov.

Hazus software is available to download online. Users may visit the Map Service Center (MSC) site to download Hazus software and state datasets. The online download option is only available to US users. International users will continue to order a Hazus DVD by contacting the FEMA Map Information eXchange (FMIX) at 1-877-336-2627.

Comprehensive Data Management System (CDMS)

FEMA's CDMS tool provides users with the capability to support analysis by updating and managing statewide datasets. It is included with the Hazus 2.1 software.


Software Patches

Hazus-MH 2.1 Service Pack(SP) 03 is now available. This update will automatically update to the application once installed on your computer.*

The following are the improvements made to the application:

Flood Model:
  • This SP 03 release will allow correct analysis of User-Defined Facility (UDF) with user-defined building, content and inventory damage functions for appropriate specific occupancy types
  •  Exports are now enabled for study regions for flood study regions containing a census block with zero exposure
Earthquake Model:
  • NGA attenuation function for a historical event have been updated and Hazus displays correct default properties,such as depth. Hazus also generates an accurate Global Summary report based on the earthquake scenario
  • The default Hazus data for steel building types in New Mexico should now display in the inventory and be usable for earthquake analyses

*Note: in order for the SP 03 updates to automatically take place within your Hazus-MH application, SP01 and SP02 must be manually installed on your computer. The following are the links to manually install the Service Packs to your machine:

Additional Information



Last Updated: 
08/08/2014 - 08:53
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