Fixed-Site Network

​Phillipsdale Landing

Overall, water quality at Phillipsdale Landing was good this week. Weather conditions were wet this week, with a total of 2.03 inches recorded at T.F. Green, and the majority of rainfall occurring on May 8th.   The Blackstone River flow increased over the week, climbing above the 19-year daily median on May 8th. Surface salinity this week averaged 7.5 ppt and ranged from 2.8 ppt to 17.7 ppt. At the bottom, salinity averaged 15.6 ppt and ranged from 4.7 ppt to 26.5 ppt. Temperatures increased this week, averaging 15.1°C at the surface and 13.6°C bottom. Surface temperatures ranged from 12.3°C to 17.0°C, while bottom temperatures ranged from 11.0°C to 17.5°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 9.1 mg/L and ranged 7.9 – 11.3 mg/L. Bottom DO concentrations averaged 8.5 mg/L and ranged from 6.5 mg/L to 11.3 mg/L. Chlorophyll concentrations remained low, averaging 2.6 µg/L at the surface and 3.8 µg/L at the bottom. Maximum chlorophyll at the surface reached 9.5 µg/L on the afternoon of May 6th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Also, please note that an isolated 15-minute portion of suspect chlorophyll data from May 6th was excluded from the summary.

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.​

​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.

​Phillipsdale Landing

Overall, water quality at Phillipsdale Landing was good this week. Weather conditions were dry, with only 0.05 inches on April 30th, recorded at T.F. Green. The Blackstone River flow declined this week, remaining below the 19-year daily median for the majority of the week. Surface salinity averaged 4.1 ppt and ranged from 1.2 ppt to 9.1 ppt. At the bottom, salinity averaged 13.5 ppt and ranged from 2.3 ppt to 27.1 ppt. Temperatures remained stabilized this week, averaging 12.7°C at the surface and ranging 10.0°C – 14.5°C. At the bottom, temperatures averaged 11.3°C and ranged 8.0°C – 14.4°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold (i.e., DO >2.9 mg/L) throughout the week. Surface DO average 10.5 mg/L and ranged from 9.5 mg/L to 11.7 mg/L.. Bottom DO concentrations averaged 9.3 mg/L and ranged from 8.1 mg/L to 11.3 mg/L. Chlorophyll readings remained comparable from last week, averaging 2.6 ug/L at the surface and 2.9 ug/L at the bottom. Maximum chlorophyll at the surface reached 14.3 ug/L on the afternoon of April 24th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Also, please note that isolated portions of suspect chlorophyll data from April 28th were excluded from the summary.

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.

​Phillipsdale Landing

Sondes were swap this week on the morning of April 16th. Overall, water quality at Phillipsdale Landing was good this week. Weather conditions were mostly dry, with only 0.4 inches of precipitation recorded at T.F. Green. The Blackstone River flow declined this week, remaining above the 19-year daily median for the week. Salinity at the surface averaged 1.8 ppt and ranged from 0.4 ppt to 4.4 ppt. At the bottom, salinity averaged 9.2 ppt and ranged from 0.4 ppt to 26.3 ppt. Temperatures continued to increase this week, averaging 12.9°C at the surface and 11.6 °C at the bottom. Surface temperatures ranged from 10.7°C to 15.5°C, while bottom temperatures ranged from 8.1°C to 15.3°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold (i.e., DO >2.9 mg/L) throughout the week. Surface DO remained similar to the previous week, averaging 10.5 mg/L and ranging 9.7-11.8 mg/L. Bottom water DO concentration averaged 9.7 mg/L and ranged from 7.7 mg/L to 11.6 mg/L. Chlorophyll concentrations remained low,  averaging 2.7 ug/L at the surface and 2.6 ug/L at the bottom. Maximum surface chlorophyll readings reached 11.9 ug/L, recorded in the morning of April 20th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Also, please note that isolated portion of suspect chlorophyll data from April 15th was excluded from the summary.

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.

​Phillipsdale Landing

Overall, water quality at Phillipsdale Landing was good this week. Weather conditions included sporadic rain events, with 1.0 inches of precipitation recorded at T.F. Green. The Blackstone River flow increased during the 12th and 13th and remained above the 19-year daily median for the week. Surface salinity this week averaged 2.4 ppt and ranged from 0.2 ppt to 7.5 ppt. At the bottom, salinity averaged 8.6 ppt and ranged from 0.2 ppt to 26.4 ppt. Temperatures increased this week, averaging 10.5°C at the surface and 9.8°C bottom. Surface temperatures ranged from 6.5°C to 12.3°C, while bottom temperatures ranged from 5.9°C to 12.5°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 11.5 mg/L and ranged 10.0 – 12.7 mg/L. Bottom DO concentrations averaged 11.0 mg/L and ranged from 9.1 mg/L to 12.6 mg/L. Chlorophyll concentrations remained low, averaging 2.3 ug/L at the surface and 4.2 ug/L at the bottom. Maximum chlorophyll at the surface reached 15.1 ug/L on the morning of April 12th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Also, please note that isolated portions of suspect chlorophyll data from April 8th to the 11th were excluded from the summary.

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.

​Phillipsdale Landing

The Phillipsdale Landing sondes have been deployed for the season since April 2nd, 2024. Overall, water quality at Phillipsdale Landing was good this week. Weather conditions were wet this week, with a total of 2.22 inches recorded at T.F. Green, and the majority of rainfall occurring between the 2nd and 4th.  The Blackstone River flow increased during the 4th and remained above the 19-year daily median for the week. Salinity at the surface averaged 1.8 ppt and ranged from 0.2 ppt to 5.7 ppt. At the bottom, salinity averaged 9.2 ppt and ranged from 0.2 ppt to 27.6 ppt. Temperatures this week averaged 7.4°C at the surface and 6.7°C at the bottom. Surface temperatures ranged from 5.8°C to 9.9°C, while bottom temperatures ranged from 5.6°C to 8.9°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 12.2 mg/L and ranged from 11.0-13.5 mg/L. Bottom water DO concentration averaged 11.6 mg/L and ranged from 9.2 mg/L to 13.6 mg/L. Chlorophyll remained low, averaging 1.6 ug/L at the surface and 3.1 ug/L at the bottom. Maximum surface chlorophyll readings reached 4.3 ug/L, recorded on the morning of April 4th. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. Also, please note that an early portion of the bottom data is not included in the summary above due to bottom deployment getting into position.

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.

​

On the morning of December 4th, the Phillipsdale Landing sondes were successfully removed for the 2023 season! For the one day of data available this week, water quality remained good, with similar conditions to last week.

The sondes at Bullock Reach were retrieved on November 14th for the 2023 season.

Phillipsdale Landing

Overall, water quality was good at Phillipsdale Landing this week. There were 0.74 inches of precipitation recorded at T.F. Green this week, and Blackstone flows continued to be higher than normal for this time of year. Surface salinity averaged 8.0 ppt and ranged from 3.2 ppt to 20.4 ppt. Bottom salinity averaged 19.8 ppt and ranged from 6.2 ppt to 27.2 ppt. Temperatures continued to decline, averaging 6.4°C at the surface and ranging from 3.6°C to 8.8°C. At the bottom, temperatures averaged 8.5°C and ranged from 5.5°C to 10.1°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold of 2.9 mg/L at both the surface and bottom all week. Surface DO was similar to last week, averaging 10.9 mg/L and ranging from 8.8 to 12.4 mg/L. Bottom DO averaged 8.7 mg/L and ranged from 7.3 mg/L to 11.0 mg/L. Chlorophyll readings remained mostly low with a few slightly elevated readings at the bottom. Chlorophyll averaged 0.6 ug/L at the surface and 1.9 ug/L at the bottom. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach

The sondes at Bullock Reach have been retrieved for the 2023 season. 

Phillipsdale Landing

Overall, water quality was good at Phillipsdale Landing this week. There were 1.82 inches of precipitation recorded at T.F. Green this week, 1.71 of which occurred on 11/22. Blackstone flows were higher than historical averages all week, but particularly following the 11/22 rain event. Surface salinity averaged 8.8 ppt and ranged from 2.9 ppt to 20.7 ppt. Bottom salinity averaged 21.4 ppt and ranged from 6.5 ppt to 27.7 ppt. Temperatures continued to decline, averaging 8.1°C at the surface and ranging from 5.1°C to 10.5°C. At the bottom, temperatures averaged 10.4°C and ranged from 7.2°C to 12.4°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold of 2.9 mg/L at both the surface and bottom all week. Surface DO was slightly higher than the previous week, averaging 10.2 mg/L and ranging from 8.3 to 11.8 mg/L. Bottom DO averaged 7.8 mg/L and ranged from 6.4 mg/L to 11.1 mg/L. Chlorophyll readings remained low, averaging 0.6 ug/L at the surface and 2.6 ug/L at the bottom. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach 

The sondes at Bullock Reach have been retrieved for the 2023 season. 

​Phillipsdale Landing

Overall, water quality was good at Phillipsdale Landing this week. There were 0.16 inches of precipitation recorded at T.F. Green this week and Blackstone River flow was slightly higher than normal for this time of year. Surface salinity averaged 13.7 ppt and ranged from 3.7 ppt to 22.6 ppt. Bottom salinity averaged 22.9 ppt and ranged from 11.8 ppt to 28.3 ppt. Temperatures were slightly lower than last week, averaging 10.4°C at the surface and ranging from 7.9°C to 12.4°C. At the bottom, temperatures averaged 12.4°C and ranged from 10.5°C to 14.0°C.

Dissolved oxygen (DO) at Phillipsdale Landing remained above the hypoxia threshold of 2.9 mg/L at both the surface and bottom all week. Surface DO remained similar to the previous week, averaging 8.9 mg/L and ranging from 6.7 to 11.0 mg/L. Bottom DO averaged 6.8 mg/L and ranged from 5.4 mg/L to 8.8 mg/L. Chlorophyll readings remained low, averaging 0.6 ug/L at the surface and 1.3 ug/L at the bottom. Please note that tidal fluctuations and Blackstone River flows greatly influence water column salinity, temperature, and DO at this location. 

Bullock Reach 

The sondes at Bullock Reach were retrieved on the morning of November 14th for the 2023 season. For the two and half days of data this week before retrieval, water quality was good. Salinity averaged 25.7 ppt, 27.9 ppt, and 29.8 ppt at the surface, middle, and bottom sondes, respectively. Surface salinity ranged 23.5 – 27.9 ppt, mid salinity ranged 25.1 – 29.7 ppt, and bottom salinity ranged 29.0 – 30.4 ppt. Surface temperatures averaged 11.4°C and ranged from 10.2°C to 12.4°C. Mid temperatures averaged 12.4°C and ranged from 11.3°C to 13.2°C. Bottom temperatures averaged 13.2°C and ranged from 12.5°C to 13.7°C.

DO concentrations at Bullock Reach remained above the hypoxia threshold all week. Surface DO averaged 8.0 mg/L and ranged 7.4 – 8.8 mg/L. In the mid waters, DO averaged 7.5 mg/L and ranged 7.1 – 8.1 mg/L. At the bottom, DO averaged 7.1 mg/L and ranged 6.7 – 7.5 mg/L.  Chlorophyll concentrations were low, averaging 1.2 ug/L, 1.9 ug/L, and 1.3 ug/L at the surface, mid, and bottom waters, respectively. ​