Successful Launch of Hazus-MH 3.1

As part of the ongoing Hazus Modernization efforts, the Hazus team has deployed Hazus-MH 3.1 on Monday, April 4, 2016. The software can be downloaded for free on the Flood Map Service Center (MSC) Hazus Download page. ArcGIS version compatibility remains at version 10.2.2 and it is supported for 64-bit Windows 7 and Windows 8.1 only. 

This release is a full-versioned software release that implements 6 enhancements and addresses 21 defects. Some of the major changes include: 

      Installation process was improved to separate Hazus-MH application download from SQL download, preventing SQL errors that users have encountered while installing previous Hazus versions

      Average Annualized Loss (AAL) analysis is now available for full suite of return periods for User Defined Facilities (UDF). After running General Building Stock (GBS) UDF analysis, users can now go to Analysis à Average Annualized Loss and select option for UDF. A report is generated under Results à Summary Reports à Buildings tab

      SLOSH basins with updated vertical datum were obtained from the National Oceanic and Atmospheric Administration (NOAA) and incorporated with the Hazus Surge to reduce analysis failures. SLOSH basins also no longer fail for counties where the Federal Information Processing Standard (FIPS) code begins with “0” 

To see a full list of changes with this version, please read the User Release Notes that are available with the download package of the software. 

NOTE: The instructions for uninstalling your old version of Hazus and installing Hazus-MH 3.1 have changed. Please read the Getting Started Guide in the HAZUS_APP folder from the MSC download for details. Users must check if their license information is visible by opening ArcGIS Administrator after uninstalling Hazus-MH 3.0 from their computer. A blank screen in ArcGIS Administrator denotes a corrupt license. In this situation, a user must go to Windows Control Panel à Uninstall Programs and click on Uninstall/Change for ArcGIS, then select the ‘Repair’ radio button and follow the on-screen procedures.  

Users wishing to preserve their study regions and transfer them to Hazus-MH 3.1 may do so, but only if they are operating on the most recent version of Hazus (3.0). 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-MH 3.0 and then upload them into 3.1 once it is downloaded. For questions or issues, feel free to contact the Hazus Help Desk at

For more information, follow the Hazus program on Twitter or LinkedIn, subscribe to receive Hazus program updates, or check back on the Hazus Modernization page frequently for updates.