Water column profiles were conducted using a Seabird Electronics profiler at seven locations in the Providence River and one location in the Seekonk River on July 23, 2025. In the five days leading up to this there was only a trace amount of rain recorded at T.F. Green International Airport (Warwick, RI). The water column stratification varied between the sites this week, from moderately stratified at Phillipsdale Landing, Edgewood Yacht Club, Pawtuxet Cove, Bullocks Reach, and Conimicut Point to strongly stratified at India Point Park and Pomham Rocks.
Dissolved oxygen conditions were below the hypoxia threshold (2.9 mg/L) in the lower part of the water column at Bullock’s Reach, Edgewood Yacht Club, and Pomham Rocks, and the entire water column at Phillipsdale Landing and India Point Park. The highest fluorescence reading was observed at about 2.25 meters below the surface at Phillipsdale Landing.