Historical News

Week of January 12 – January 18, 2020

Surface Mapping

​Data were collected on January 15, 2020 while the R/V Monitor was underway collecting nutrient samples in the Providence River estuary. The chlorophyll concentrations were good. From north to south, average chlorophyll concentrations were as follows: Upper Providence River (0.44 µg/L), Edgewood Shoals area (0.50 µg/L), Pawtuxet River area (0.49 µg/L), and Lower Providence River area (0.52 µg/L). Overall, chlorophyll ranged between non-detectable and 0.90 µg/L with an overall average of 0.49 µg/L.  The chlorophyll data from this date are presented in the map below:

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Week of January 12 - 18, 2020

R/V Monitor's Blog

​On Wednesday, January 15th, the crew of the R/V Monitor was out on the upper Bay collecting nutrients and plankton samples, taking Secchi Disk water clarity measurements, and conducting real-time surface mapping of water quality parameters, including dissolved oxygen, chlorophyll, water temperature, salinity, and pH, all in an effort to document water quality improvements associated with NBC construction projects. Jeff captained the boat while monitoring professionals Fern, Steve and Gerard collected the samples and data.  It was a sunny and brisk day with a 10 knot wind from the west-northwest.  There was a small chop in the morning, but the wind died down in the afernoon, making the water much calmer. The photo features one of NBC's monitoring professionals holding a nutrients sample he had just collected.

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Week of December 29, 2019 - January 4, 2020

R/V Monitor's Blog

On Thursday, January 2nd, the crew of the R/V Monitor was out on the upper Bay collecting nutrients samples, taking Secchi Disk water clarity measurements, conducting water column profiles usning a profiling sonde, and conducting real time surface mapping of water quality parameters, including dissolved oxygen, chlorophyll, water temperature, salinity, and pH, all in an effort to document water quality improvements associated with NBC construction projects.   Sara captained the boat while monitoring professionals Fern and Amanda collected the samples and data.  It was sunny but cool with a breeze out of the west, with a mild chop on the water.  The featured photo of a fishing vessel was taken the prior week.

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Week of December 22 - 28, 2019

R/V Monitor's Blog

​On Tuesday, December 24th, the crew of the R/V Monitor was out on the upper Bay collecting bacteria samples, taking Secchi Disk water clarity measurements, and attempted to collect real-time surface mapping of water quality parameters, but there were some technical issues with the equipment.  Sara captained the boat while monitoring professionals Bekki and Amanda collected the samples and data.  It was a very cold day, partly cloudy and no wind.  A barge observed in the Seekonk River was photographed this day.

12-24-19 Barge.jpg 

Week of December 22-28

Bacteria Sampling

​Twenty stations were sampled for fecal coliform bacteria in the Providence and Seekonk Rivers on December 24, 2019.  Five stations were also sampled for enterococci. There was no recorded precipitation in the five days prior to sampling.

The geometric mean of fecal coliform results for all sites was 19 MPN/100 mL, a slight increase compared to 12 MPN/100 mL during the previous sampling event on November 14. Counts were higher at the Seekonk River sites than the Providence River sites, with geometric means of 28 and 16 MPN/100 mL, respectively. The maximum count (230 MPN/100 mL) was measured at the Off FP Outfall site in the Providence River. Results for both the Providence River and the Seekonk River were within state standards for primary contact but exceeded standards for shellfishing.

The enterococci results decreased very slightly from the previous sampling event on November 14, from 13 MPN/100 mL to 12 MPN/100 mL. Enterococci results ranged from <10 MPN/100 mL at two sites (Gaspee Point and Conimicut Point) to 41 MPN/100mL at Point St. Bridge. These enterococci results were within state standards for primary contact.

Please note: the results of NBC's fecal coliform and enterococci monitoring are for informational/research purposes only and are not intended to suggest official state compliance with bathing and shellfishing standards.

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