Water Clarity

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on September 3, 2025. In the five days prior to the survey, 0.00 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.0 meters. The lowest clarity this week (1.2 meters) was measured at Phillipsdale Landing, 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. Compared to previous measurements taken on August 27, 2025, water clarity remained relatively consistent at most sites. However, India Point Park showed a notable decrease of 1.3 meters.

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on August 27, 2025. In the five days prior to the survey, 0.02 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.4 meters. The lowest clarity this week (0.9 meters) was measured at Phillipsdale Landing, while the greatest clarity (3.3 meters) was measured at Conimicut Point and India Point Park. There was a general north-to-south trend of increasing water clarity among the sites this week. Compared to previous measurements taken on August 20, 2025, water clarity remained remained relatively consistent at most sites. However, India Point Park showed a notable increase of 1.1 meters.

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on August 20, 2025. In the five days prior to the survey, 0.89 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.2 meters. The lowest clarity this week (1.1 meters) was measured at Phillipsdale Landing, while the greatest clarity (3.1 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 remained approximately the same from the previous measurements (data collected August 13, 2025).

Water clarity was measured at three locations in the Providence River and Seekonk River estuaries on August 13, 2025. Due to an equipment malfunction, only a limited number of sites were visited during this sampling day. In the five days prior to the survey, 0.00 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.5 meters. The lowest clarity this week (2.1 meters) was measured at Edgewood Yacht Club, while the greatest clarity (3.1 meters) was measured at Conimicut Point. There was a general north-to-south trend of increasing water clarity among the sites this week. Compared to the measurements taken on July 23, 2025, water clarity at Bullock Reach and Edgewood Yacht Club remained unchanged on July 30, while Conimicut Point showed an increase in water clarity of 0.8 meters.

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on July 30, 2025. In the five days prior to the survey, 1.91 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.2 meters. The lowest clarity this week (1.5 meters) was measured at Phillipsdale Landing and Pawtuxet Cove, while the greatest clarity (3.7 meters) was measured at Point Street Bridge. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity remained approximately the same from the previous measurements (data collected July 23, 2025).

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on July 23, 2025. In the five days prior to the survey, trace amounts of precipitation were recorded at TF Green. Secchi depth averaged 2.0 meters. The lowest clarity this week (1.7 meters) was measured at Edgewood Yacht Club and Pomham Rocks, while the greatest clarity (2.5 meters) was measured at Bullock’s Reach. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity remained approximately the same from the previous measurements (data collected July 16, 2025).

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on July 16, 2025. In the five days prior to the survey, 0.01 inches of precipitation were recorded at TF Green. Secchi depth averaged 1.9 meters. The lowest clarity this week (1.5 meters) was measured at India Point Park, while the greatest clarity (2.5 meters) was measured at Point Street Bridge. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity at most locations remained relatively consistent compared to previous measurements (data collected July 8, 2025). However, water quality at Phillipsdale Landing increased (0.8 meters) and water quality at Conimicut Point decreased (1.6 meters), both compared to previous measurements (data collected July 8, 2025).

Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on July 8, 2025. In the five days prior to the survey, 0.55 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.3 meters. The lowest clarity this week (1.3 meters) was measured at Phillipsdale Landing, while the greatest clarity (3.7 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 remained approximately the same from the previous measurements (data collected July 2, 2025).

​Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on July 2, 2025. In the five days prior to the survey, 0.02 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.2 meters. The lowest clarity this week (1.4 meters) was measured at Phillipsdale Landing, while the greatest clarity (2.9 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 remained approximately the same from the previous measurements (data collected June 25, 2025).

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on June 25, 2025. In the five days prior to the survey, 0.01 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.3 meters. The lowest clarity this week (1.3 meters) was measured at Phillipsdale Landing, while the greatest clarity (2.7 meters) was measured at India Point Park and Pomham Rocks. There was no clear north-to-south gradient in water clarity among the sites this week. Overall, water clarity at most locations remained relatively consistent compared to previous measurements (data collected June 11, 2025).