Providence Conditions

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The NBC's fixed-site sondes at Phillipsdale Landing were deployed on March 10, 2022 for the 2022 season. The Bullock Reach Buoy sondes were deployed for the 2022 season on May 24, 2022 and removed for the season on November 22.   

10/5/22 Update - Phillipsdale began experiencing hardware issues with the communication system on August 26 - these issues continue and live updates will be restored as soon as possible. If you have questions about data availability please reach out via

Please note: Fixed-site data are made available in near real-time direct from field-deployed instruments. They have not undergone quality control review. 

Bullock Reach

Last Updated: 11/22/22 9:00 AM
Sonde Location Surface Middle Bottom
Depth (m) 1.05 3.43 7.28
Temperature (°C) 9.3 9.15 9.83
Temperature (°F) 48.73 48.48 49.69
Salinity (ppt) 27.87 28.32 28.68
Dis. Oxygen (mg/L) 8.86 8.91 8.56
pH 7.86 7.82 7.85
Chlorophyll (µg/L) 2.02 2.41 1.64
Turbidity (NTUs) -0.2 -1.31 0.3


Last Updated: 1/24/23 10:00 AM
Sonde Location Surface Bottom
Depth (m) 0.66 3.17
Temperature (°C) 2.88 5.63
Temperature (°F) 37.19 42.14
Salinity (ppt) 0.94 27.15
Dis. Oxygen (mg/L) 13.69 9.56
pH (SU) 7.76 7.92
Chlorophyll (µg/L) 1.03 n/a


The Narragansett Bay Commission’s (NBC) Mission Statement is to maintain a leadership role in the protection of water quality in Narragansett Bay and its tributaries. The NBC keeps to this vow by continually monitoring water quality at its two buoy locations, collecting water quality casts, mapping surface water quality parameters, and taking samples of the Bay’s bacterial and nutrient levels.

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Summary of Water Quality in the Bay

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