Nutrient samples were collected from 7 river stations on November 29th and 7 bay stations on November 30th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, there were 0.69 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 Blackstone River @ Bikepath Bridge (TN = 972 ppb, TDN = 965 ppb, DIN = 782 ppb, average of duplicates). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginsin Ave (TN = 519 ppb, TDN = 503 ppb, DIN = 362 ppb).
Among the bay stations sampled, the highest surface TN, TDN, and DIN were observed at Phillipsdale Landing (TN = 1,200 ppb, TDN = 1,020 ppb, DIN = 850 ppb). The lowest surface TN, TDN, and DIN were observed at Bullock Reach Buoy (TN = 524 ppb, TDN = 413 ppb, DIN = 221 ppb). Chlorophyll a concentrations at the surface bay stations were low this week; concentrations averaged 0.63 μg/L overall with a maximum of 1.15 μg/L at Bullock Reach Buoy.
The next scheduled sampling date is December 13, 2023.