HEC-1 Stormwater Software

Free Upgrade for Registered Users

Current version available for downloading is: 1 - 2011 - 434  If this procedure does not work.

Why upgrade? From time to time we post upgrades that simply make the interface run better.  These can be small changes, internal coding changes or other changes that just improve the software.  Upgrading is recommended for all users having a year code of 2005 - others should request a new setup.  


Upgrade Procedure:

Currently the Upgrades are provide to Registered Users who Contact us by Email.




If you are not a Registered User the Software will not RUN.







Latest Release


This release uses HEC-1R 2010

Date:  JUNE 22, 2011

Important Upgrade for All Users


Contains new US Rainfall Map