Stormwater Modelling Coupled to Field Monitored Storm Data – Lessons Learned

Abstract

This research presents the results of field monitored green infrastructure Stormwater Management Practices (SMPs) constructed to mitigate stormwater runoff from an elevated highway in the urban environment. The SMPs were designed to capture and remove the first 3-5 cm of rainfall that falls on the highway and allow it to infiltrate rather than enter the combined sewer network, and to mitigate peak flows from larger events. Since 1997, Villanova University in partnership with Temple University has developed and is continuing a fundamental and applied research program using field monitored data coupled with calibrated computer USEPA Storm Water Management ModelSCompar (SWMM) model to advance the knowledge base of the profession, and to assist and inform stormwater management design and maintenance practices implemented as part of the project. The research team includes geotechnical and environmental researchers, though this presentation will focus on the lessons learned from field hydrologic monitoring coupled with the SWMM Computer Model. Recommendations derived from this research address the stormwater capture and transport system, design of infiltration SMP’s, addressing design and construction challenges, and use of continuous simulation for design to meet regulatory requirements.