2020/2021 Narragansett Bay field survey

Unlike many estuaries, Narragansett Bay nutrient inputs are dominated by point sources. After a large fish kill in 2003, large management actions have been implemented to reduce nitrogen loads to 5 mg/l by implementing fixed film activated sludge treatment (on-line 2013 and 2014) and preventing combined sewage overflow by creating large interceptor tunnels (2008 = phase 1, 2014 = phase 2). These data were collected to assess conditions after these major management upgrades had been implemented. With previously published data, it may be possible to assess change before, during and after sewage treatment upgrades.