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 June 10, 2026. In the four days leading up to and including the survey day, there were 0.22 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was moderately stratified at Phillipsdale Landing, weakly stratified at India Point Park, Pomham Rocks, Edgewood Shoal, Edgewood Yacht Club, and Bullock’s Reach, and well-mixed at Conimicut Point and Pawtuxet Cove.
Dissolved oxygen conditions were slightly below the hypoxia threshold (2.9 mg/L) in the lower part of the water column at Edgewood Shoal and Phillipsdale Landing. The highest fluorescence reading was observed about 1.00 meter below the surface at Phillipsdale Landing.