Nutrient samples were collected from seven river stations and seven bay stations on July 10th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, there was no precipitation recorded at T.F. Green.
Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Pawtuxet River @ Broad St (TN = 1,350 ppb, TDN = 1,340 ppb, DIN = 995 ppb). The lowest TN, TDN, and DIN were observed at Blackstone River @ Slater Mill (TN = 873 ppb, TDN = 794 ppb, DIN = 568 ppb).
Among the bay stations sampled, the highest surface total nitrogen (TN) concentration was observed at Phillipsdale Landing (1,240 ppb); the highest total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) were at Pawtuxet Cove (TDN = 1,000 ppb, DIN = 718 ppb, average of duplicates). The lowest surface TN and TDN were at Conimicut Point (TN = 511 ppb, TDN = 261 ppb), while the lowest surface DIN concentrations were observed at Edgewood Yacht Club, Pomham Rocks, and India Point Park (13 ppb).
The next scheduled sampling date is July 24, 2024.