Water Column Profiles

Water column profiles were conducted at six locations in the Providence River estuary on October 23, 2024 using a Seabird Electronics profiler. A seventh site, Point Street Bridge, was visited, but no data was collected due to an equipment malfunction. In the five days leading up to the survey, no precipitation was recorded at T.F. Green.  Water column stratification varied between the sites this week from well-mixed at Pawtuxet Cove to moderately stratified at India Point Park.

Dissolved oxygen (DO) conditions were not observed to be below the hypoxia threshold (2.9 mg/L) at any site profiled this week. The highest fluorescence recorded this week was measured around 2.5 meters below the surface at Conimicut Point.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on October 3, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, no precipitation was recorded at T.F. Green.  Water column stratification varied between the sites this week, from well-mixed to weakly stratified.

Dissolved oxygen (DO) conditions were not observed to be below the hypoxia threshold (2.9 mg/L) at any site profiled this week. The highest fluorescence readings for the week were measured around 1 meter below the surface at Edgewood Yacht Club.

Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on September 25, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.78 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from well-mixed to weakly stratified.​

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Edgewood Yacht Club and Pomham Rocks. The highest fluorescence readings for the week were measured around 1 meter below the surface at Pawtuxet Cove.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on September 11, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.02 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from well-mixed at Edgewood Yacht Club and Point Street Bridge, to moderately stratified at Phillipsdale Landing. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Edgewood Yacht Club, and in the middle and lower portions of the water column at Phillipsdale Landing. The highest fluorescence readings for the week were measured around 1 meter below the surface at Phillipsdale Landing.​

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on September 4, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, no precipitation was recorded at T.F. Green. Water column stratification at the sites varied from well-mixed at Pomham Rocks, to weakly stratified at all other profiled sites.

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Phillipsdale Landing, Edgewood Yacht Club, and India Point Park. The highest fluorescence readings for the week were measured around 1 meter below the surface at Pomham Rocks. ​

​​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on August 28, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 1.38 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from well-mixed at Point Street Bridge, to moderately stratified at Phillipsdale Landing, Pomham Rocks, and India Point Park 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Pomham Rocks and India Point Park, and in all portions of the water column (upper, middle and lower) at Phillipsdale Landing. The highest fluorescence readings for the week were measured around 1 meter below the surface at India Point Park.

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on August 21, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.48 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from weakly stratified at seven of eight sites, to moderately stratified at Phillipsdale Landing. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Edgewood Yacht Club, in the middle and lower portions of the water column at Edgewood Shoals, and in all portions of the water column (upper, middle and lower) at India Point Park. Conditions at Phillipsdale Landing did not dip below the hypoxia threshold but did approach it in the lower portion of the water column. The highest fluorescence readings for the week were measured around 1.5 meters below the surface at Bullock Reach Buoy.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on August 14, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 1.32 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from weakly stratified at Point Street Bridge, India Point Park, Pomham Rocks and Edgewood Yacht Club, to strongly stratified at Phillipsdale Landing. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Pomham Rocks, in the middle and lower portions of the water column at Edgewood Yacht Club, and in all portions of the water column (upper, middle and lower) at Point Street Bridge, India Point Park and Phillipsdale Landing. The highest fluorescence readings for the week were measured around 1 meter below the surface at Phillipsdale Landing.

Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on August 7, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.95 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from weakly stratified at Pawtuxet Cove and Edgewood Yacht Club, to strongly stratified at Conimicut Point. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Edgewood Yacht Club, in the middle and lower portions of the water column at Pomham Rocks, and in all portions of the water column (upper, middle and lower) at India Point Park and Phillipsdale Landing. The highest fluorescence readings for the week were measured around 2 meters below the surface at Edgewood Yacht Club.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on August 1, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 1.34 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from well-mixed at Edgewood Yacht Club, to strongly stratified at Point Street Bridge. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at Point Street Bridge and Pomham Rocks, and in the upper and middle portions of the water column at Phillipsdale Landing. The highest fluorescence readings for the week were measured around 1.5 meters below the surface at Phillipsdale Landing.​