Phillipsdale Landing

Overall, water quality at Phillipsdale Landing was fair to good this week. Weather conditions were wet this week, with a total of 1.38 inches recorded at T.F. Green, and the majority of rainfall occurring on the 15^th.  The Blackstone River flow peaked on the 16^th and remained above the 20-year daily median for the entire week. Salinity at the surface averaged 1.8 ppt and ranged from 0.4 ppt to 4.2 ppt. At the bottom, salinity averaged 9.1 ppt and ranged from 0.0 ppt to 32.8 ppt; however, the salinity data for the first part of the week also exhibits some anomalous behavior, and may be tied to a sensor malfunction. Temperatures this week averaged 18.2 °C at the surface and 16.1 °C at the bottom. Surface temperatures ranged from 14.7 °C to 20.6 °C, while bottom temperatures ranged from 11.8 °C to 20.1 °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 9.0 mg/L and ranged from 7.8 -10.4 mg/L. Bottom water DO concentration averaged 7.1 mg/L and ranged from 3.9 mg/L to 9.9 mg/L. Chlorophyll was low, averaging 0.9 ug/L at the surface and 2.7 ug/L at the bottom. Maximum surface chlorophyll readings reached 3.7 ug/L, recorded on the afternoon of May 12^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location.

The bottom sonde had a malfunctioning depth sensor this week, thus no depth data is available for the bottom sonde. The salinity data for this week also exhibits some anomalous behavior, and may have been malfunctioning.

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-early summer.

Phillipsdale Landing

The Phillipsdale Landing sondes were deployed for the season on May 6, 2025. Overall, water quality at Phillipsdale Landing was fair to good this week. Weather conditions were wet this week, with a total of 3.51 inches recorded at T.F. Green, and the majority of rainfall occurring on the 5^th, 6^th, and 9^th.  The Blackstone River flow increased on the 5^th and remained above the 20-year daily median for the remainder of the week. Salinity at the surface averaged 2.2 ppt and ranged from 0.5 ppt to 6.2 ppt. At the bottom, salinity averaged 11.3 ppt and ranged from 0.0 ppt to 28.4 ppt. Temperatures this week averaged 16.9 °C at the surface and 15.0 °C at the bottom. Surface temperatures ranged from 14.2 °C to 19.6 °C, while bottom temperatures ranged from 11.8 °C to 18.3 °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 9.3 mg/L and ranged from 7.9 -10.6 mg/L. Bottom water DO concentration averaged 7.1 mg/L and ranged from 3.9 mg/L to 10.3 mg/L. Chlorophyll was low, averaging 2.11 ug/L at the surface and 4.5 ug/L at the bottom. Maximum surface chlorophyll readings reached 20.8 ug/L, recorded on the morning of May 6^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location.

The bottom sonde had a malfunctioning depth sensor this week, thus no depth data is available for the bottom sonde.

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-early summer.

Phillipsdale Landing

The sondes were retrieved this week on December 9^th to finish up the 2024 season. Due to the Phillipsdale Landing sondes being removed, we only have data from the morning of December 9^th. The sonde removal occurred before the rain reported that day (0.37 inches recorded at TF Green). Blackstone River flows remained stable and below the 20-year median statistic for the morning. Salinity at the surface averaged 22.1 ppt and ranged from 16.9 ppt to 24.6 ppt. At the bottom, salinity averaged 25.3 ppt and ranged from 20.2 ppt to 26.8 ppt. Temperatures averaged 6.4°C at the surface and 6.9°C at the bottom. Surface temperatures ranged from 5.6°C to 6.8°C, while bottom temperatures ranged from 6.1°C to 7.1°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold of 2.9 mg/L at all depths throughout the week. Surface DO averaged 9.6 mg/L and ranged 9.0-10.4 mg/L. Bottom water DO concentration averaged 9.0 mg/L and ranged from 8.7 mg/L to 10.1 mg/L. Chlorophyll readings increased since last week, averaging 10.9 µg/L at the surface and 6.7 µg/L at the bottom. Maximum chlorophyll at the surface reached 21.7 µg/L at 8:01 December 9^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Phillipsdale Landing sonde will be deployed again in the spring for the 2025 monitoring season.

Bullock Reach 

Bullock Reach sondes were removed on November 18^th and will be deployed again in the spring for the 2025 monitoring season.

Phillipsdale Landing

Overall, the water quality at Phillipsdale Landing was good this week. Weather conditions included sporadic rain events, with 0.62 inches of precipitation recorded at T.F. Green. The Blackstone River flow fluctuated through the week in response to rain but remained below the 20-year daily median throughout the week. Surface salinity averaged 21.4 ppt and ranged from 11.7 ppt to 26.4 ppt. At the bottom, salinity averaged 25.3 ppt and ranged from 12.4 ppt to 29.0 ppt. Temperatures decreased this week, averaging 7.2°C at the surface and ranging 3.7°C – 9.2°C. At the bottom, temperatures averaged 8.1°C and ranged 4.7°C – 9.5°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold of 2.9 mg/L at all depths throughout the week. Surface DO averaged 9.6 mg/L and ranged 8.0-11.7 mg/L. Bottom water DO concentration averaged 8.7 mg/L and ranged from 7.5 mg/L to 10.9 mg/L. Chlorophyll readings increased from last week, averaging 6.3 µg/L at the surface and 5.8 µg/L at the bottom. Maximum chlorophyll at the surface reached 50.7 µg/L on the morning of December 8^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach 

Bullock Reach sondes were removed on November 18^th and will be deployed again in the spring for the 2025 monitoring season.

Phillipsdale Landing

Overall, the water quality at Phillipsdale Landing was good this week. Weather conditions included sporadic rain events, with 0.76 inches of precipitation recorded at T.F. Green. The Blackstone River flow fluctuated throughout the week in response to rain. Surface salinity averaged 18.9 ppt and ranged from 6.6 ppt to 25.6 ppt. At the bottom, salinity averaged 26.5 ppt and ranged from 14.5 ppt to 29.1 ppt. Temperatures continued to decrease this week, averaging 9.1°C at the surface and ranging 5.4°C – 10.3°C. At the bottom, temperatures averaged 10.1°C and ranged 8.6°C – 10.8°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 8.5 mg/L and ranged 5.8-10.6 mg/L. Bottom water DO concentration averaged 7.5 mg/L and ranged from 6.4 mg/L to 8.9 mg/L. Chlorophyll readings increased from last week, averaging 2.5 µg/L at the surface and 2.3 µg/L at the bottom. Maximum chlorophyll at the surface reached 25.4 µg/L on the afternoon of December 1^st. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach 

Bullock Reach sondes were removed on November 18^th and will be deployed again in the spring for the 2025 monitoring season.

Phillipsdale Landing

Overall, the water quality at Phillipsdale Landing was good this week. Weather conditions included sporadic rain events, with 1.71 inches of precipitation recorded at T.F. Green. The Blackstone River flow fluctuated through the week in response to rain, rising above the 21-year daily median at the end of the week. Surface salinity averaged 20.1 ppt and ranged from 7.1 ppt to 27.3 ppt. At the bottom, salinity averaged 25.2 ppt and ranged from 8.9 ppt to 28.7 ppt. Temperatures decreased this week, averaging 10.3°C at the surface and ranging 7.2°C – 11.8°C. At the bottom, temperatures averaged 10.8°C and ranged 8.1°C – 11.7°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 10.3 mg/L and ranged from 7.2 mg/L to 11.8 mg/L. Bottom DO concentrations averaged 10.8 mg/L and ranged from 8.1 mg/L to 11.7 mg/L. Chlorophyll readings remained stabilized from last week, averaging 1.39 µg/L at the surface and 1.1 µg/L at the bottom. Maximum chlorophyll at the surface reached 7.7 µg/L at midday of November 23^rd. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach

Sondes were removed this week on the morning of November 18^th. Due to the Bullock Reach sondes being removed, we only have data from the morning of November 18^th. Overall, the water quality was good at Bullock Reach this week. Salinity averaged 28.9 ppt, 29.9 ppt, and 30.5 ppt at the surface, middle, and bottom sondes, respectively. Surface salinity ranged 28.2 – 29.4 ppt, mid salinity ranged 29.3 – 30.5 ppt, and bottom salinity ranged 29.9 – 31.1 ppt. Surface temperature averaged 10.7°C and ranged from 10.5°C to 10.9°C. Mid temperatures averaged 10.8°C and ranged from 10.7°C to 10.9°C. Bottom temperatures averaged 10.8°C and ranged from 10.7°C to 11.0°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 9.0 mg/L and ranged 8.9 – 9.2 mg/L. In the mid waters, DO averaged 8.9 mg/L and ranged 8.8 – 9.0 mg/L. At the bottom, DO averaged 8.7 mg/L and ranged 8.6 – 8.8 mg/L.  Chlorophyll readings were low throughout the week. Readings averaged 1.9 µg/L at the surface, 1.9 µg/L at mid-depth, and 2.6 µg/L at the bottom.  The maximum surface chlorophyll was 2.7 µg/L on the morning of November 18^th.

Phillipsdale Landing

Sondes were swapped this week on the morning of November 14^th.  Overall, the water quality at Phillipsdale Landing was good to fair this week. Weather conditions were dry this week, with only 0.09 inches of precipitation recorded at T.F. Green. The Blackstone River flow declined through the week, while remaining below the 21-year daily median. Surface salinity averaged 22.3 ppt and ranged from 11.7 ppt to 27.6 ppt. At the bottom, salinity averaged 25.8 ppt and ranged from 18.8 ppt to 28.8 ppt. Temperatures continued to decrease this week, averaging 11.6°C at the surface and ranging 9.2°C – 13.8°C. At the bottom, temperatures averaged 12.2°C and ranged 10.9°C – 14.0°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 8.2 mg/L and ranged from 6.7 mg/L to 9.3 mg/L. Bottom DO concentrations averaged 7.7 mg/L and ranged from 6.0 mg/L to 9.2 mg/L. Chlorophyll readings decreased from last week, averaging 1.27 µg/L at the surface and 1.6 µg/L at the bottom. Maximum chlorophyll at the surface reached 8.48 µg/L on the morning of November 11^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach

Overall, the water quality was good to fair at Bullock Reach this week. Salinity averaged 28.7 ppt, 29.5 ppt, and 30.3 ppt at the surface, middle, and bottom sondes, respectively. Surface salinity ranged 27.4 – 29.6 ppt, mid salinity ranged 28.4 – 30.4 ppt, and bottom salinity ranged 28.8 – 31.1 ppt. Surface temperature averaged 11.6°C and ranged from 9.9°C to 13.9°C. Mid temperatures averaged 11.7°C and ranged from 10.4°C to 13.4°C. Bottom temperatures averaged 11.8°C and ranged from 10.5°C to 13.6°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 8.9 mg/L and ranged 8.5 – 10.3 mg/L. In the mid waters, DO averaged 8.8 mg/L and ranged 8.3 – 9.4 mg/L. At the bottom, DO averaged 8.9 mg/L and ranged 8.0 – 9.0 mg/L.  Chlorophyll readings ranged from low to moderate throughout the week. Readings averaged 2.0 µg/L at the surface, 2.4 µg/L at mid-depth, and 3.1 µg/L at the bottom.  The maximum surface chlorophyll was 4.0 µg/L on the afternoon of November 11^th.

Phillipsdale Landing

Overall, the water quality at Phillipsdale Landing was good this week. Weather conditions were dry this week, with only 0.01 inches of precipitation recorded at T.F. Green. The Blackstone River flow remained stabilized throughout the week, remaining below the 21-year daily throughout the week. Surface salinity averaged 8.7 ppt and ranged from 6.43 ppt to 12.8 ppt. At the bottom, salinity averaged 7.1 ppt and ranged from 5.8 ppt to 11.0 ppt. Temperatures decreased this week, averaging 14.1°C at the surface and ranging 11.4°C – 16.6°C. At the bottom, temperatures averaged 14.6°C and ranged 12.9°C – 15.6°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 8.7 mg/L and ranged from 6.43 mg/L to 12.77 mg/L. Bottom DO concentrations averaged 7.1 mg/L and ranged from 5.8 mg/L to 11.0 mg/L. Chlorophyll readings decreased from last week, averaging 9.6 µg/L at the surface and 6.9 µg/L at the bottom. Maximum chlorophyll at the surface reached 104.7 µg/L on the afternoon of November 6^th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach

Sondes were swapped this week on the morning of November 5^th. Overall, water quality was good at Bullock Reach this week. Salinity averaged 28.6 ppt, 29.5 ppt, and 30.7 ppt at the surface, middle, and bottom sondes, respectively. Surface salinity ranged 27.2– 29.5 ppt, mid salinity ranged 28.3 – 30.9 ppt, and bottom salinity ranged 29.5 – 32.0 ppt. Surface temperature averaged 13.9°C and ranged from 12.3°C to 15.3°C. Mid temperatures averaged 14.0°C and ranged from 12.5°C to 15.1°C. Bottom temperatures averaged 14.0°C and ranged from 13.0°C to 14.6°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 8.9 mg/L and ranged 8.2 – 10.5 mg/L. In the mid waters, DO averaged 8.7 mg/L and ranged 7.9 – 9.5 mg/L. At the bottom, DO averaged 8.2 mg/L and ranged 7.5 – 9.0 mg/L.  Chlorophyll readings ranged from low to elevated throughout the week.. Readings averaged 2.6 µg/L at the surface, 3.6 µg/L at mid-depth, and 4.2 µg/L at the bottom.  The maximum surface chlorophyll was 5.0 µg/L on the morning of November 11^th.