Nutrient samples were collected from seven river stations and seven bay stations on June 24th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 2.01 inches of precipitation were recorded at T.F. Green.
Among the river stations sampled, the highest total nitrogen (TN) was observed at Blackstone River @ Slater Mill (1,545 ppb, average of duplicates). The highest total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet River @ Broad St. (TDN = 1,480 ppb, DIN = 1,208 ppb). Higher TDN were observed at Woonasquatucket River @ Valley St. and Woonasquatucket River @ Manton Ave. Bridge; however, inconsistency between the TN and TDN results may indicate some reliability issues in those results. The lowest TN, TDN, and DIN were observed at Moshassuck River @ Footbridge at Mill St. (TN = 806 ppb, TDN = 864 ppb, DIN = 700.9). The lowest TDN and DIN were observed at Palmer River @ Rt. 6 (, average of duplicates).
Among the bay stations sampled, the highest surface TN was observed at Pawtuxet Cove and Phillipsdale Landing (1,150 ppb). The highest surface TDN and DIN were observed at Pawtuxet Cove (TDN = 1,020 ppb, DIN = 729.4). The lowest surface TN, TDN, and DIN were observed at Conimicut Point (TN = 554 ppb, TDN = 134 ppb, DIN = 72.9).
The next scheduled sampling date is July 8th, 2026.