Daria DiBiasio – Narrabay

July 23, 2026

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on July 23, 2026. In the five days prior to the survey, 2.28 inches of precipitation were recorded at TF Green. Secchi depth averaged 1.2 meters. The lowest clarity this week (0.6 meters) was measured at Phillipsdale Landing, while the greatest clarity (1.9 meters) was observed at Pomham Rocks. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity decreased from the previous measurements (data collected July 15, 2026).

July 15, 2026

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on July 15, 2026. In the five days prior to the survey, there was no rain recorded at TF Green. Secchi depth averaged 2.7 meters. The lowest clarity this week (2.1 meters) was measured at Phillipsdale Landing and Edgewood Yacht Club, while the greatest clarity (3.9 meters) was observed at Conimicut Point. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity increased from the previous measurements (data collected July 8, 2026).

July 15, 2026

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 15, 2026. In the four days leading up to and including the survey day, there was no rain recorded at T.F. Green International Airport (Warwick, RI). The water column was moderately stratified at Phillipsdale Landing, Pomham Rocks, and India Point Park, and weakly stratified at Edgewood Yacht Club, Pawtuxet Cove, Bullock’s Reach, Conimicut Point, and Point Street Bridge.

Dissolved oxygen conditions were slightly below the hypoxia threshold (2.9 mg/L) throughout the water column at Point Street Bridge and in the lower part of the water column at Edgewood Yacht Club, Pomham Rocks, Phillipsdale Landing, and India Point Park. The highest fluorescence reading was observed about 0.75 meters below the surface at India Point Park.

July 8, 2026

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 8, 2026. In the four days leading up to and including the survey day, there were 2.89 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was strongly stratified at Pawtuxet Cove and Phillipsdale Landing, moderately stratified at India Point Park, Bullock’s Reach, and Conimicut Point, weakly stratified at Edgewood Yacht Club and Pomham Rocks, and well-mixed at Edgewood Shoal.

Dissolved oxygen conditions were below the hypoxia threshold (2.9 mg/L) in the lower part of the water column at Edgewood Yacht Club, Edgewood Shoal, Pawtuxet Cove, Pomham Rocks, Phillipsdale Landing, and India Point Park. The highest fluorescence reading was observed about 1.00 meters below the surface at Phillipsdale Landing.

June 24, 2026

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 June 24, 2026. In the four days leading up to and including the survey day, there were 2.01 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was moderately stratified at India Point Park, Pomham Rocks, and Conimicut Point, weakly stratified at, Bullock’s Reach, Phillipsdale Landing, and Edgewood Yacht Club, and well-mixed at Pawtuxet Cove.

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

July 8, 2026

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on July 8, 2026. In the five days prior to the survey, 2.89 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.3 meters. The lowest clarity this week (1.7 meters) was measured at Phillipsdale Landing, while the greatest clarity (2.5 meters) was observed at several sampling locations. There was a general north-to-south gradient in water clarity among the sites this week. Overall, water clarity decreased from the previous measurements (data collected June 24, 2026).

June 17, 2026

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 June 17, 2026. In the four days leading up to and including the survey day, there were 0.01 inches of rain recorded at T.F. Green International Airport (Warwick, RI). The water column was moderately stratified at India Point Park, weakly stratified at Pomham Rocks, Point St. Bridge, Conimicut Point, Edgewood Yacht Club, and Bullock’s Reach, and well-mixed at Phillipsdale Landing.

Dissolved oxygen conditions were slightly below the hypoxia threshold (2.9 mg/L) in the lower part of the water column at Edgewood Yacht Club and India Point Park. The highest fluorescence reading was observed about 2.00 meters below the surface at India Point Park.

June 24, 2026

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on June 24, 2026. In the five days prior to the survey, 2.01 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.9 meters. The lowest clarity this week (2.3 meters) was measured at Phillipsdale Landing and Pawtuxet Cove, while the greatest clarity (3.5 meters) was measured at Conimicut Point. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity increased from the previous measurements (data collected June 17, 2026).

June 17, 2026

Water clarity was measured at six locations in the Providence River and Seekonk River estuaries on June 17, 2026. In the five days prior to the survey, 0.01 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.5 meters. The lowest clarity this week (1.9 meters) was measured at Phillipsdale Landing and India Point Park, while the greatest clarity (3.3 meters) was measured at Conimicut Point. There was a general north-to-south trend of increasing water clarity among the sites this week. Overall, water clarity increased from the previous measurements (data collected June 10, 2026).

June 10, 2026

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.