Historical News

June 17, 2024

Surface Mapping

​Surface chlorophyll data were collected on June 17, 2024 while the R/V Monitor was underway collecting bacteria samples in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as poor in the Seekonk River and as fair in all other areas. Overall, chlorophyll ranged from 0.0 to 72.05 µg/L with an average of 13.74 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.Dataflow 2024-06-17.jpg

June 12, 2024

Surface Mapping

Surface chlorophyll data were collected on June 12, 2024 while the R/V Monitor was underway collecting nutrient samples in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as good in the Pawtuxet River, poor in the Northern Providence River Channel, and as fair in all other areas. Overall, chlorophyll ranged from 1.48 to 44.81 µg/L with an average of 14.44 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

Dataflow 2024-06-12.jpg

June 17, 2024

R/V Monitor's Blog

The Data Stream had an eventful day while out in the upper bay conducting routine bay bacteria monitoring activities.   A 12-foot Jon Boat appeared to be in distress, as the two youths onboard could not get their motor started. The wind and the current were pushing the boat towards a concrete hurricane barrier.  The Data Stream crew quickly rendered assistance and towed the youths to safety, and brought them to where they launched at the Gano Park Boat Ramp.​

June 06, 2024

R/V Monitor's Blog

​The Data Stream had some visitors while doing routine sonde swaps at Bullocks Reach.  Below is a picture taken by Tyler, an Environmental Monitoring Supervisor.  Tyler identified the birds as Common Terns.  These birds are seen often hanging around the Bullocks Reach buoy eating fish.

Common Tern Cropped.jpg 




Week of April 29 - May 5, 2024

Fixed Site Network

​Phillipsdale Landing
Sondes were swapped this week on the morning of April 30th. Overall, water quality at Phillipsdale Landing was good this week. Weather conditions included sporadic rain events, with 0.38 inches of precipitation recorded at T.F. Green. The Blackstone River flow declined this week, remaining below the 19-year daily median for the week. Salinity at the surface averaged 5.9 ppt and ranged from 1.4 ppt to 19.5 ppt. At the bottom, salinity averaged 15.4 ppt and ranged from 3.0 ppt to 25.1 ppt. Temperatures this week averaged 14.4°C at the surface and 12.4°C at the bottom. Surface temperatures ranged from 11.8°C to 16.1°C, while bottom temperatures ranged from 9.7°C to 15.7°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold (i.e., DO >2.9 mg/L) throughout the week. Surface DO averaged 10.0 mg/L and ranged from 8.5-12.7 mg/L. Bottom water DO concentration averaged 8.9 mg/L and ranged from 7.6 mg/L to 11.5 mg/L. Chlorophyll remained low, averaging 3.5 ug/L at the surface and 4.2 ug/L at the bottom. Maximum surface chlorophyll readings reached 8.7 ug/L, recorded on the night of May 4th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach 
The Bullock Reach Buoy remains out of the water for the winter.  EM will coordinate with RIDEM to redeploy the buoy in late spring.

Newer Posts
Older Posts