Nutrient samples were collected from seven river stations and seven bay stations on June 12th. In the five days prior to sampling, there were 0.21 inches of 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 Street (TN = 1,340 ppb, TDN = 1,420 ppb, DIN = 1,148 ppb). The lowest TN and TDN were observed at Woonasquatucket River @ Manton Ave. Bridge (TN = 892 ppb, TDN = 922 ppb), while the lowest DIN was at Moshassuck River @ Footbridge at Mill St. (DIN = 626 ppb).
Among the bay stations sampled, the highest surface TN, TDN, and DIN were observed at Pawtuxet Cove (TN = 1,120 ppb, TDN = 976 ppb, and DIN = 762 ppb. The lowest surface TN and TDN were observed at Conimicut Point (TN = 433 ppb, TDN = 232 ppb), while the lowest surface DIN was at Conimicut Point, Edgewood Yacht Club and the Bullock Reach Buoy. (DIN = 13 ppb). Chlorophyll a concentrations at the surface bay stations averaged 11.63 μg/L overall with a maximum of 29.57 μg/L at the India Point Park.
The next scheduled sampling date is June 26, 2024.