Camden City (population 80,000), one of the most economically distressed cities in the US, had a combined sewer system that was in a serious state of disrepair, creating serious human health issues due to flooding. This project implemented various green and grey infrastructure projects to address stormwater and combined sewer issues through a partnership between the Camden County Municipal Utilities Authority (MUA) and other governmental entities and non-profits.
A brief case study of this is available here.