PV & Associates, LLC is a small business that develops the urban water quality software programs — WinSLAMM and WinDETPOND. Both programs are continually updated as new research data becomes available.
The programs were 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 utilizes small storm hydrology - the concept that the majority of the runoff volume and pollutant loadings in urban areas is a result of the small and medium rainfall events.
WinSLAMM can model a growing list of stormwater control measures including infiltration/biofiltration basins, street cleaning, wet detention ponds, grass swales, filter strips, porous pavement, catchbasins, water reuse, and various proprietary devices.WinSLAMM can be used to answer questions such as:
Since its origination in the 1970’s, the program’s use has extended across North America and overseas. WinSLAMM is based largely upon Dr. Robert Pitt’s research studies conducted in the United States and Canada and by research studies conducted through the WDNR and the USGS.
Various practitioners, municipalities, and watershed groups at the regional and local level have used WinSLAMM to address a variety of urban stormwater issues:
WinDETPOND was developed to perform continuous simulations of stormwater wet detention ponds. This continuous simulation is important to understand the storm to storm variation and long-term performance for typical rain conditions. WinDETPOND was verified using many years of detention pond data obtained from the Monroe Street detention pond monitored by the WDNR and the USGS.
*At this time WinDETPOND is only compatible with 32-bit operating systems.