PV & Associates

Announcements

• WinSLAMM Training using Version 10.0 announced.  See the Training page for details.(posted 1/23/2012)
• WinSLAMM Version 10.0 Beta 3 has been released!  This will be the last Beta before the full release.  See the Upcoming Features page for a short description.  (posted 12/19/11)
• Regional parameter files and additional standard land use files created.  See the Select Documentation page for details. (posted 11/26/11)
• WinSLAMM v 9.4.0 released.  See Download Software page for details. (posted 8/17/09)
• WinSLAMM v 9.2.6 and v 9.3.4 available for download from Download Software page. (posted 8/03/09)
• 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 6/30/09)

Introduction

PV & Associates, LLC is a small business that develops the urban water quality software programs — WinSLAMM and WinDETPOND.  Both programs are updated as new research data becomes available. 

The programs were originally developed as outgrowths of early stormwater research conducted 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 new program that better reflected research results and was more focused on stormwater quality management than on drainage design.  

The vast majority of model development is supported through software sales.  However, model development has been partially 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 determines the runoff from a series of normal rainfall events and calculates the pollutant loading from each individual source area created by these rainfall events. The user is 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 and 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.