Linking Bmp Systems Performance To Receiving Water Protection eBook

This project includes the development of a modeling tool called the BMP Selection/Receiving Water Protection Toolbox (Toolbox). After selecting an initial representative list of water quality parameters and stormwater BMPs, the Team compared and evaluated algorithms for the BMP Module of the Toolbox. Three general types of algorithms were considered for BMP performance modeling: (1) hydraulic algorithms - these determine the volumes captured, stored, and bypassed by the BMP, (2) hydrologic algorithms - these determine the volume losses within the BMP due to infiltration and evapotranspiration and/or use (in the case of cisterns), and (3) treatment algorithms - these determine the concentration reductions provided by the BMP. Based on applicable unit treatment processes, available performance data, and desired level of user input requirements, BMP modeling approaches have been recommended.