In the latest version of PCSWMM 2009 (ver. 3.4), we have rolled out a compatibility mode for running earlier versions of the SWMM engine. In this version, we provide support for the last 2 years of EPA SWMM5 engine versions (i.e. all versions from EPA SWMM 5.0.013 up to and including the latest vers... [More]

New in PCSWMM 2009 version 3.4 is an anti-aliasing feature that improves map rendering of all layers (raster and vector). I could describe it in detail, however I think these two screen captures communicate everything that needs to be said. Anti-aliasing turned off (a la older PCSWMM):   Ant... [More]

With the release of PCSWMM 2009 version 3.4, we have made a huge leap forward in GIS capabilities. We've added support for many new GIS and CAD formats, improved map aesthetics with anti-aliasing, greatly simplified coordinate system setup (especially for State Plane projections), and... [More]

CHI has made over 400 peer-reviewed papers from our monograph series available for individual download. Covering 17 years of presentations (1993-2008) at CHI's International Conference on Stormwater and Urban Water Systems Modeling, these papers have been extensively edited for content and clarity a... [More]

I’m pleased to report the general availability of PCSWMM 2009 Professional, our flagship software for advanced watershed, stormwater and wastewater modeling. There are a number of cool new features which select clients have been using and providing feedback on over the past 2 years – we&... [More]

I'm happy to announce that after our biggest, most comprehensive, usability study (with excellent feedback from over 400 users), CHI has released our most significant update of PCSWMM yet - PCSWMM 2009. With a streamlined, adaptive user-interface that improves work-flow for experienced users at t... [More]