PV & Associates

Announcements

• WinSLAMM Version 10.0 is undergoing its final testing prior to full release.(posted 5/07/2012)
• WinSLAMM Version 10.0 Beta 3 has been released!  This will be the last Beta Version prior to the full release.  See the Upcoming Features page for a short description.  (posted 12/19/2011)
• Regional parameter files (for most of North America) and additional standard land use files created.  See the Select Documentation page for details. (posted 11/26/2011)
• WinSLAMM v 9.4.0 released.  See Download Software page for details. (posted 8/17/2009)
• WinSLAMM v 9.2.6 and v 9.3.4 available for download from Download Software page. (posted 8/03/2009)
• PVA User's List Created.  From time to time, notifications regarding updates to the programs and upcoming training are annouced.  To be added to the WinSLAMM and WinDETPOND notification list, please send an email to the PVA User's List with your contact information and "Please Add" in the subject line.  We will not share your contact information. (posted 6/30/2009)

Introduction

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

Current Release: v 9.4.0

WinSLAMM (Source Loading and Management Model for Windows) was developed to evaluate nonpoint source pollutant loadings in urban areas using small storm hydrology. The model calculate the runoff volume and pollutant loading for each source area within each land use from a series of actual rainfall events.  The user is then able to apply a series of stormwater control practices, such as infiltration/biofiltration, street sweeping, wet detention ponds, grass swales, porous pavement, catchbasins, or various proprietary devices to determine how effectively these practices remove pollutants. 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.

WinDETPOND

Current Release: v 8.4.2

WinDETPOND was developed to perform continuous simulations of wet stormwater 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.