SNAPSHOT OF UPPER NARRAGANSETT BAY
The Narragansett Bay Commission’s (NBC) mission is to protect and enhance water quality in Narragansett Bay by providing safe, cost-effective, and reliable wastewater treatment services.
A critical aspect of our mission involves understanding the water quality in the Bay and watershed to ensure that regulations and infrastructure investments remain anchored in sound science. To this end, since the early 2000s the NBC has maintained an extensive receiving water monitoring program, measuring water quality parameters throughout the watershed, sampling for bacteria and nutrients, and making these data publicly available. Please explore this website for data and details.
The NBC’s Phillipsdale Landing sondes were deployed for the 2025 season on May 6, 2025. The Bullock Reach sondes were deployed on June 10, 2025.Â
​Please note: Fixed-site data are made available in near real-time direct from field-deployed instruments. They have not undergone quality control review.
Water Quality Initiatives
Fixed-Site Data
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Water Quality Summaries
Research Vessel
Bullock Reach Buoy
On a bright and warm June morning, the EM team embarked on the inaugural deployment of the RIPDES required monitoring Bullocks Reach buoy, marking the commencement of this season’s environmental […]
Fixed-Site Network
July 14 – 20, 2025
Phillipsdale Landing Sondes were swapped this week on the morning of July 15th. Overall, the water quality at Phillipsdale Landing was fair this week. Weather conditions were dry, with only […]
Water Column Profiles
October 1, 2025
Water column profiles were conducted using a Seabird Electronics profiler at seven locations in the Providence River and one location in the Seekonk River on October 1, 2025. In the […]
Water Clarity
October 1, 2025
Water clarity was measured at eight locations in the Providence River and Seekonk River estuaries on October 1, 2025. In the five days prior to the survey, 0.06 inches of […]
Surface Mapping
September 17, 2025
Surface chlorophyll data were collected on September 17, 2025, while the R/V Monitor was underway collecting nutrient samples in the Providence and Seekonk River estuary. The average chlorophyll concentrations were […]
Nutrients Sampling
September 3, 2025
Nutrient samples were collected from seven river stations and eight bay stations on September 3rd. All bay stations were sampled at the surface. In the five days prior to sampling, […]
Bay Bacteria Sampling
September 10, 2025
On September 10th, 2025, twenty stations were sampled for fecal coliform bacteria in the Providence and Seekonk Rivers; five of these stations were also sampled for enterococci bacteria. In the […]
Phytoplankton Sampling
September 3, 2025
Phytoplankton samples were collected on September 3, 2025 at Bullock’s Reach and analyzed in the laboratory shortly after collection. It was sunny, calm and warm on this day. The water […]
Benthic Video
September 25 – October 1, 2022
​The boat crew conducted benthic video surveys along the Bullock Reach, Edgewood, and Sabin transects on September 29, 2022. Scale lasers were used in the footage at Bullock Reach and […]