Water Column Profiles

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on July 24, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.06 inches of precipitation were recorded at T.F. Green. Water column stratification at the sites varied from well-mixed at Pawtuxet Cove and Phillipsdale Landing, to moderately stratified at sites such as Bullock Reach Buoy 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 the Bullock Reach Buoy, and in the lower and middle portions of the water column at the Pomham Rocks, India Point Park, Edgewood Yacht Club, and Edgewood Shoals sites. The highest fluorescence readings for the week were measured around 1.5 meters below the surface at Pawtuxet Cove.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on July 17, 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 Point Street Bridge, to strongly stratified at a majority of sites, including Bullock Reach Buoy and Phillipsdale Landing. 

Dissolved oxygen (DO) conditions were below the hypoxia threshold (2.9 mg/L) in the lower portion of the water column at the Bullock Reach Buoy and Edgewood Yacht Club sites, in the lower and middle portions of the water column at the Pomham Rocks and Phillipsdale Landing sites, and in all portions of the water column (upper, middle, and lower) at India Point Park. DO conditions were below the hypoxia threshold at Conimicut Point only in the middle portion of the water column. 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 April 16, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 1.01 inches of precipitation were recorded at T.F. Green. Most sites were strongly stratified this week, with the exception of Phillipsdale Landing, which was dominated by freshwater.

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 10 meters below the surface at Pomham Rocks.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on March 20, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.08 inches of precipitation were recorded at T.F. Green. Most sites were strongly or moderately stratified this week, with the exception of Phillipsdale Landing, which was dominated by freshwater.

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 2 meters below the surface at Bullock Reach Buoy.

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on March 6, 2024 using a Seabird Electronics profiler. In the five days leading up to the survey, 2.30 inches of precipitation were recorded at T.F. Green. Most sites were strongly stratified this week, with the exception of Phillipsdale Landing, which was dominated by freshwater, showing the impact of over 2 inches over rain that fell in the days before the profiles were recorded.

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 1.5 meters below the surface at Conimicut Point.

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on December 13, 2023 using a Seabird Electronics profiler. In the five days leading up to the survey, 2.29 inches of precipitation were recorded at T.F. Green. Most sites were strongly stratified this week, with the exception of Pawtuxet Cove, which was dominated by freshwater, showing the impact of the major rain storm this week.

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 3 meters below the surface at Phillipsdale Landing.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on November 30, 2023 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.69 inches of precipitation were recorded at T.F. Green. Most sites were weakly or moderately stratified this week, with the exception of Pawtuxet Cove, which was strongly 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 1.5 meters below the surface at Pawtuxet Cove.

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on November 15, 2023 using a Seabird Electronics profiler. In the five days leading up to the survey, 0.01 inches of precipitation were recorded at T.F. Green. Stratification ranged from well-mixed at sites like Bullock Reach Buoy to moderately stratified at sites including Phillipsdale Landing and Pomham Rocks.

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 3 meters below the surface at Edgewood Shoal.

​Water column profiles were conducted at seven locations in the Providence and Seekonk River estuaries on November 1, 2023 using a Seabird Electronics profiler. In the five days leading up to the survey, 1.11 inches of precipitation were recorded at T.F. Green. Most sites were moderately stratified this week, with the exception of Phillipsdale Landing, and Pawtuxet Cove, which were strongly 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 India Point Park.

​Water column profiles were conducted at eight locations in the Providence and Seekonk River estuaries on October 25, 2023 using a Seabird Electronics profiler. In the five days leading up to the survey, trace amounts of precipitation were recorded at T.F. Green. Stratification varied between the profiled sites this week, from weak stratification at Pomham Rocks and Point Street Bridge, to strong stratification at India Point Park, Phillipsdale Landing, and Pawtuxet Cove.

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 1.5 meters below the surface at Pawtuxet Cove.

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