PV & Associates

ArcSLAMM and ArcSLAMM+ are available! ArcSLAMM can be accessed via the University of Northern Iowa's GeoTREE Center website. GeoTREE ArcSLAMM+ is available here . (posted 4/15/2017) Regional parameter files (for most of North America) and additional standard land use files updated. See the Select Documentation page for details. (posted 10/31/2012).... PV & Associates, LLC is a small business that develops the urban water quality software program WinSLAMM. The program is continually updated as new research data becomes available. The program was originally developed as outgrowths of early stormwater research conducted during the 1970s for the US EPA and other agencies. We realized that the monitored data did not correspond to many assumptions that were the basis for available stormwater quality models, and therefore decided to create a program that better reflected research results and was more focused on stormwater quality management than on drainage design. Model development is supported through software sales and has also been supported by organizations such as the Environmental Protection Agency (EPA), Ontario Ministry of the Environment, Environment Canada, Wisconsin Department of Natural Resources (WDNR) and the United States Geological Survey (USGS). For a complete list of organizations that have supported model development, see the WinSLAMM History page on this website. WinSLAMM (Source Loading and Management Model for Windows) is the only Urban Stormwater Quality Model that evaluates runoff volume and pollution loading for each source area within each land use for each rainfall event. It does not lump impervious areas together nor does it lump all the areas in a single land use together. Evaluation at the source area level allows stormwater quality professionals the ability to target the highest loading areas and recommend improvements to reduce runoff volume and pollution loading from those areas. WinSLAMM is the leading model for evaluating LID Practices and Green Infrastructure. USEPA's definition of ...Read More