Integrating Green Stormwater Controls into the Metro Nashville Overflow Abatement Program

Like many combined sewer system programs across the county, the City of Nashville and Davidson County Metro Water Services (MWS) - Clean Water Nashville Program wishes to better incorporate green infrastructure into their long-term strategy for reducing the frequency/severity of combined sewer system overflows and improving local water quality. MWS embarked on a project to identify opportunities to implement green infrastructure in the combined sewer system areas as well as build upon previous opportunities identified in prior planning efforts. An element of this effort was a review of best practices being performed by other peer communities throughout the country. In addition, the project included a modeling effort to evaluate the best bang-for-the-buck sewersheds within the system for implementation. The result of the project was an identification and prioritization system for MWS to use to identify and implement practical green infrastructure projects into their program.