Providence Conditions

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The NBC’s fixed-site sondes at Phillipsdale Landing were deployed on March 3, 2021. These sondes collected data through the end of 2021 and were removed on January 10, 2022 due to risk of icing. Phillipsdale Landing sondes may be re-deployed when risk of icing is reduced.

The Bullock Reach sondes were deployed on June 2, 2021. The Bullock Reach sondes were removed for the 2021 season on November 18, 2021.

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: 11/18/21 11:30 AM
Sonde Location Surface Middle Bottom
Depth (m) 3.26 7.03
Temperature (°C) 0 13.12
Temperature (°F) 32 55.61
Salinity (ppt) 0 29.77
Dis. Oxygen (mg/L) 9.55 7.17
pH 7.8 7.77
Chlorophyll (µg/L) 2.06 1.07
Turbidity (NTUs) -0.29 0.91


Last Updated: 1/10/22 2:01 PM
Sonde Location Surface Bottom
Depth (m) 0.63 2.6
Temperature (°C) 2.47 6.1
Temperature (°F) 36.44 42.98
Salinity (ppt) 4.12 17.33
Dis. Oxygen (mg/L) 13.13 8.59
pH (SU) 8.1 7.9
Chlorophyll (µg/L) 0.96 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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