Water column profiles were conducted using a Seabird Electronics profiler at six locations in the Providence River and one location in the Seekonk River on May 27, 2026. In the four days leading up to and including the survey day, there were 1.04 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was strongly stratified at Pawtuxet Cove, Pomham Rocks, India Point Park, and Phillipsdale Landing, moderately stratified at Bullock’s Reach and Conimicut Point, and weakly stratified at Edgewood Yacht Club.
Dissolved oxygen conditions were slightly below the hypoxia threshold (2.9 mg/L) in the lower part of the water column at Phillipsdale Landing. The highest fluorescence reading was observed about 2.00 meters below the surface at Pomham Rocks.