Nutrient samples were collected from seven river stations and eight bay stations on March 19th. All bay stations were sampled at the surface and the bottom. In the five days prior to sampling, 2.21 inches 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 Blackstone River @ Slater Mill (TN = 1,220 ppb, TDN = 1,160, DIN = 810). The lowest TN, and TDN concentrations were observed on the Woonasquatucket River @ Manton Ave. Bridge (TN = 624 ppb, TDN = 617 ppb). The lowest DIN was observed at Moshassuck River @ Footbridge at Mill St. (DIN = 407 ppb).
Among the bay stations sampled, the highest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Phillipsdale Landing (TN = 1,450 ppb, TDN = 1,290 ppb, DIN = 889 ppb). The lowest surface TN was observed at Pomham Rocks (TN = 766 ppb). The lowest surface TDN and DIN concentrations were observed at Conimicut Point Surface (TDN = 475 ppb, DIN = 223 ppb).
The next scheduled sampling date is April 2, 2025.