Nutrient samples were collected from six river stations and seven bay stations on August 20th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 0.01” of precipitation were recorded at T.F. Green.
Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet River @ Broad St. (TN = 1,600 ppb, TDN = 1,650 ppb, DIN = 1,327.2 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave (TN = 674 ppb, TDN = 801 ppb, DIN = 629.8 ppb).
Among the bay stations sampled, the highest surface TN was observed at Phillipsdale Landing (1,460 ppb). The highest TDN and DIN were observed at Pawtuxet Cove (TDN = 1,090 ppb, DIN = 796). The lowest surface TN and TDN were observed at Conimicut Point (TN = 482 ppb, TDN = 130 ppb). The lowest surface DIN was observed at four of the seven bay stations (13 ppb, reflecting minimum detection limits for DIN).
The next scheduled sampling date is September 3rd, 2025.