Water Column Profiles

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 October 14, 2026. In the five days leading up to this, there were 2.37 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Point Street Bridge had a well-mixed water column.  The water column was moderately stratified at Edgewood Yacht Club, Bullock Reach, and Conimicut Point. Strong stratification was observed at Pawtuxet Cove, India Point Park, Pomham Rocks and Phillipsdale Landing.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were not observed at any location. The highest fluorescence reading was observed 1.5-meters below the surface at Phillipsdale Landing.

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 October 7, 2026. In the five days leading up to this, there were 0.06 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Point Street Bridge had a well-mixed water column.  The water column was weakly stratified at Edgewood Yacht Club, Bullock Reach, Conimicut Point, and Pomham Rocks. Moderate stratification was observed at Pawtuxet Cove, India Point Park, and Phillipsdale Landing.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the middle of the water column at Point Street Bridge and India Point Park. Phillipsdale Landing had dissolved oxygen concentrations below the hypoxia threshold at the bottom of the water column. The highest fluorescence reading was observed 1.25-meters below the surface at Pawtuxet Cove.

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 September 30, 2026. In the five days leading up to this, there were 4.22 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Bullock Reach had a weakly stratified water column. The water column was moderately stratified at Edgewood Shoal, Edgewood Yacht Club, Pawtuxet Cove, Conimicut Point and Pomham Rocks. Strong stratification was observed at India Point Park and Phillipsdale Landing.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were not observed at any sampling location. The highest fluorescence reading was observed 1.25-meters below the surface at India Point Park.

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 September 22, 2026. In the five days leading up to this, there were 0.27 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Point Street Bridge had a well-mixed water column. The water column was weakly stratified at Bullock Reach, Conimicut Point, Edgewood Yacht Club, Pomham Rocks, and India Point Park. Moderate stratification was observed at Phillipsdale Landing. The water column at Pawtuxet Cove was strongly stratified.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed throughout the entire water column at Point Street Bridge and India Point Park. Edgewood Yacht Club, Pomham Rocks and Phillipsdale Landing had dissolved oxygen concentrations below the hypoxia threshold in only the lower part of the water column. The highest fluorescence reading was observed 1.75-meters below the surface at Phillipsdale Landing.

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 September 16, 2026. In the five days leading up to this, there were 4.18 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was weakly stratified at Bullock Reach, Conimicut Point, Edgewood Yacht Club and Pomham Rocks. Moderate stratification was observed at India Point Park and Phillipsdale Landing. The water column at Pawtuxet Cove was strongly stratified.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the lower part of the water column at Edgewood Yacht Club, India Point Park and Phillipsdale Landing. The highest fluorescence reading was observed one meter below the surface at Phillipsdale Landing.

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 September 9, 2026. In the five days leading up to this, there were 0.06 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was weakly stratified at Phillipsdale Landing and well-mixed at all other profiling locations: Bullock reach, Conimicut Point, Edgewood Yacht Club, Pawtuxet Cove, Pomham Rocks, Point Street Bridge and India Point Park.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the lower part of the water column at Pawtuxet Cove, Pomham Rocks and Point Street Bridge. The entire water column at India Point Park and Phillipsdale Landing had dissolved oxygen concentrations below the hypoxia threshold. The highest fluorescence reading was observed 1.25 meters below the surface at Phillipsdale Landing.

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 September 2, 2026. In the five days leading up to this, there were 1.25 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was weakly stratified at every profiling location: Bullock Reach, Conimicut Point, Pawtuxet Cove, Edgewood Yacht Club, Edgewood Shoal, Pomham Rocks, India Point Park and Phillipsdale Landing.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the lower part of the water column at Edgewood Yacht Club, Edgewood Shoal and Pomham Rocks. The entire water column at India Point Park and Phillipsdale Landing had dissolved oxygen concentrations below the hypoxia threshold. The highest fluorescence reading was observed 1.75 meters below the surface at Pawtuxet Cove.

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 August 26, 2026. In the five days leading up to this, there were 0.73 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Strong water column stratification was observed at Edgewood Yacht Club and Phillipsdale Landing. The water column was moderately stratified at Pomham Rocks. Bullock Reach, Conimicut Point, and India Point Park exhibited weak stratification. The water column at Pawtuxet Cove was well mixed.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the lower part of the water column at Bullock Reach, Conimicut Point, Pomham Rocks, India Point Park and Phillipsdale Landing. The highest fluorescence reading was observed one meter below the surface at Pawtuxet Cove.

Water column profiles were conducted using a Seabird Electronics profiler at sixlocations in the Providence River and one location in the Seekonk River on August 19, 2026. In the five days leading up to this, there were 0.31 inches of rain recorded at T.F. Green International Airport (Warwick, RI). Moderate water column stratification was observed at Phillipsdale Landing. The water column was weakly stratified at Conimicut Point, Bullock Reach, Edgewood Yacht Club, Pomham Rocks, and India Point Park. The water column at Pawtuxet Cove was well mixed.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed throughout the water column at India Point Park. The lower part of the water column at Bullock Reach, Pawtuxet Cove, Edgewood Yacht Club, Pomham Rocks and Phillipsdale Landing had dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L). The highest fluorescence reading was observed two meters below the surface at Edgewood Yacht Club.

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 August 5, 2026. In the five days leading up to this, there were 2.57 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was strongly stratified at Conimicut Point, Edgewood Yacht Club, Edgewood Shoal, India Point Park and Phillipsdale Landing; moderate water column stratification was observed at Bullock Reach, Pawtuxet Cove and Pomham Rocks.

Dissolved oxygen conditions below the hypoxia threshold (2.9 mg/L) were observed in the lower part of the water column at Bullock Reach, Edgewood Yacht Club, Edgewood Shoal, Pomham Rocks, India Point Park and Phillipsdale Landing. The highest fluorescence reading was observed one meter below the surface at Edgewood Yacht Club.