Water Clarity

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on May 14, 2025. In the five days prior to the survey, 1.73 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.0 meters. The lowest clarity this week (1.7 meters) was measured at Phillipsdale Landing, Edgewood Yacht Club, and Bullock’s Reach, while the greatest clarity (2.5 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 decreased from the previous measurements (data collected May 7, 2025).

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on May 7, 2025. In the five days prior to the survey, 2.10 inches of precipitation were recorded at TF Green. Secchi depth averaged 2.8 meters. The lowest clarity this week (1.5 meters) was measured at Phillipsdale Landing, while the greatest clarity (4.3 meters) was measured at Conimicut Point. There was a general north-to-south trend of increasing water clarity among the sites this week.

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on October 30, 2024. In the five days prior to the survey, 0.03 inches of precipitation were recorded at TF Green. Secchi depth averaged 5.5 meters. The lowest clarity this week (2.9 meters) was measured at Phillipsdale Landing, while the greatest clarity (8.5 meters) was measured at Bullock Reach Buoy. 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 October 23, 2024).

​Water clarity was measured at seven locations in the Providence River estuary on October 23, 2024. No precipitation was recorded at TF Green in the five days prior to the survey. Secchi depth averaged 5.0 meters. The lowest clarity this week (4.7 meters) was measured at Conimicut Point, while the greatest clarity (5.5 meters) was measured at Edgewood Yacht Club. There was no distinct north-to-south trend of water clarity among the sites this week. Overall, water clarity increased from the previous measurements (data collected October 17, 2024).

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on October 17, 2024. 0.14 inches of precipitation were recorded at TF Green in the five days prior to the survey. Secchi depth averaged 3.6 meters. The lowest clarity this week (1.5 meters) was measured at Phillipsdale Landing, while the greatest clarity (4.4 meters) was measured at Bullock Reach Buoy. 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 October 9, 2024).​​

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on October 9, 2024. 0.81 inches of precipitation were recorded at TF Green in the five days prior to the survey. Secchi depth averaged 2.3 meters. The lowest clarity this week (1.2 meters) was measured at Phillipsdale Landing, while the greatest clarity (3.2 meters) was measured at Bullock Reach Buoy. There was a north-to-south trend of increasing water clarity among the sites this week.  Overall, water clarity increased from the previous measurements (data collected October 3, 2024).​

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on October 3, 2024. No precipitation was recorded at TF Green in the five days prior to the survey. Secchi depth averaged 2.1 meters. The lowest clarity this week (0.7 meters) was measured at India Point Park, while the greatest clarity (3.5 meters) was measured at Conimicut Point. There was no strong directional gradient of water clarity among the sites this week.  Overall, water clarity decreased from the previous measurements (data collected September 25, 2024).​

​Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on September 25, 2024. A total of 0.78 inches of rain were recorded at TF Green in the five days prior to the survey. Secchi depth averaged 2.8 meters. The lowest clarity this week (2.1 meters) was measured at Phillipsdale Landing, while the greatest clarity (3.5 meters) was measured at Conimicut Point. There was a general north-to-south gradient of increasing water clarity among the sites this week.  Overall, water clarity increased from the previous measurements (data collected September 11, 2024).​

Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on September 11, 2024. A total of 0.2 inches of rain were recorded at TF Green in the five days prior to the survey. Secchi depth averaged 2.2 meters. The lowest clarity this week (1.3 meters) was measured at Phillipsdale Landing, while the greatest clarity (2.7 meters) was measured at Bullock Reach Buoy and Conimicut Point. There was a general north-to-south gradient of increasing water clarity among the sites this week.  Overall, water clarity remained similar to the previous week (data collected September 4, 2024), with the exception of a significant increase in Secchi depth (+0.9 meters) at Pomham Rocks and Edgewood Yacht Club.​​

​Water clarity was measured at seven locations in the Providence River and Seekonk River estuaries on September 4, 2024. Zero inches of rain were recorded at TF Green in the five days prior to the survey. Secchi depth averaged 1.9 meters. The lowest clarity this week (1.4 meters) was measured at Phillipsdale Landing, while the greatest clarity (2.4 meters) was measured at Bullock Reach Buoy and Conimicut Point. There was a general north-to-south gradient of increasing water clarity among the sites this week. ​Overall, water clarity remained similar to the previous week (data collected August 28, 2024), with the exception of a significant increase at Conimicut Point.​