Nutrient samples were collected from eleven river stations and eight bay stations on July 24th. Edgewood Shoal was sampled at the surface and bottom; all other bay stations were sampled at the surface only. In the five days prior to sampling, there were 0.06 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 Ten Mile River @ Central Ave (TN = 1,940 ppb, TDN = 1,800 ppb, DIN = 1,650 ppb). The lowest TN was observed at Runnins River @ River Rd (742 ppb), while the lowest TDN and DIN were observed at Palmer River @ Rt 6 (TDN = 387 ppb, DIN = 78 ppb).
Among the bay stations sampled, the highest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet Cove (TN = 1,300 ppb, TDN = 1,100 ppb, DIN = 840 ppb). The lowest surface TN was at India Point Park (600 ppb, average of duplicates), while the lowest surface TDN and DIN concentrations were observed at Conimicut Point (TDN = 280 ppb, DIN = 30 ppb).
The next scheduled sampling date is August 7, 2024.