New Maintenance Release of EPANET 2

Lewis Rossman just announced the release on a New Maintenance Release of EPANET 2:

In preparation for the release of the Multi-Species Water Quality Modeling Extension to EPANET, we have just loaded a new maintenance update of EPANET, 2.00.11, to the new home page for EPANET: http://www.epa.gov/nrmrl/wswrd/dw/epanet.html.

The only new features we added were to increase the allowable size of ID labels to 31 characters, to save the epanet2.ini settings file to the users Application Data folder so that the program is easier to deploy within networked environments, and to make several additional parameters available to the ENgetnodevalue function of the Toolkit that are required by the multi-species extension.

We have made a number of changes to the hydraulic engine code so that it can better handle combinations of control valves connected to one another. In particular, it now produces correct solutions for multi-valve regulator stations that have two or more PRVs connected in parallel. I want to thank Rod Allen of the Portland Water Bureau for his assistance with this. These changes have resulted in some networks requiring more trials than before to reach convergence, so keep this in mind when applying the new update to your existing models.

The full list of updates and bug fixes is available from the web site. A more complete overhaul of the program, including a fix for the scaling problem with the backdrop map, is still in preparation and may be ready for release by the end of the year.