Rowan Hanley

Nutrient samples were collected from thirteen river stations on April 3rd. In the five days prior to sampling, there were 1.44 inches of precipitation recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Ten Mile River @ Central Ave. (TN = 1,120 ppb, TDN = 1,150 ppb, DIN = 866 ppb). The lowest TN, TDN, and DIN were observed at Coles River @ Milford Road (TN = 531 ppb, TDN = 494 ppb, DIN = 130 ppb).

The next scheduled sampling date is April 17, 2024.

​Nutrient samples were collected from seven river stations and eight bay stations on March 20th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, there were 0.2 inches of precipitation recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN) and total dissolved nitrogen (TDN) were observed at Blackstone River @ Bikepath Bridge (TN=906 ppb, TDN = 928 ppb), while the highest dissolved inorganic nitrogen (DIN) was at the Blackstone River @ Slater Mill (DIN=735 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave (TN=559.5 ppb, TDN=567.5 ppb, DIN=401 ppb, all averaged with duplicates).

Among the bay stations sampled, the highest surface TN, TDN, and DIN were observed at Phillipsdale Landing (TN = 1,080 ppb, TDN = 961 ppb, DIN = 765 ppb). The lowest surface TN, TDN, and DIN were observed at the Bullock Reach Buoy (TN = 460 ppb, TDN = 177 ppb, DIN = 73 ppb). Chlorophyll a concentrations at the surface bay stations averaged 6.22 μg/L overall with a maximum of 15.01 μg/L at the Bullock Reach Buoy.

The next scheduled sampling date is April 3, 2024.

​Nutrient samples were collected from fourteen river stations and eight bay stations on March 6th. Edgewood Shoal was sampled at the surface and bottom; all other bay stations were sampled at the surface only. In the five days prior to sampling, there were 3.16 inches of precipitation recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Ten Mile River @ Central Ave. (TN = 1,500 ppb, TDN = 1,460 ppb, DIN = 1,304 ppb). The lowest TN, TDN, and DIN were observed at Coles River @ Milford Road (TN = 512 ppb, TDN = 462 ppb, DIN = 166 ppb).

Among the bay stations sampled, the highest surface TN, TDN, and DIN were observed at Phillipsdale Landing (TN = 1,250 ppb, TDN = 929 ppb, DIN=786 ppb). The lowest surface TN, TDN, and DIN were observed at Conimicut Point (TN = 786 ppb, TDN = 389 ppb, DIN=315 ppb. Chlorophyll a concentrations at the surface bay stations averaged 1.90 μg/L overall with a maximum of 4.83 μg/L at the Bullock Reach Buoy.

The next scheduled sampling date is March 20, 2024.

Nutrient samples were collected from seven river stations on February 21st. In the five days prior to sampling, there were 0.05 inches of precipitation recorded at T.F. Green. 

Among the stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Pawtuxet River @ Broad St (TN = 1,280 ppb, TDN = 1,250 ppb, DIN = 1,100 ppb, average of duplicates). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave. (TN = 722 ppb, TDN = 676 ppb, DIN = 561 ppb, average of duplicates).

The next scheduled sampling date is March 6, 2024.​

Nutrient samples were collected from 14 river stations on February 7th. There was no precipitation recorded at T.F. Green in the five days prior to sampling

Among the stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Ten Mile River @ Central Ave (TN = 1,800 ppb, TDN = 1,840 ppb, DIN = 1,780 ppb). The lowest TN, TDN, and DIN were observed at Coles River @ Milford Rd (TN = 635 ppb, TDN = 582 ppb, DIN = 363 ppb).

The next scheduled sampling date is February 21, 2024.​

Nutrient samples were collected from seven river stations on January 24th. In the five days prior to sampling and the morning of, there were 0.2 inches of precipitation recorded at T.F. Green. 

Among the stations sampled, the highest total nitrogen (TN) and total dissolved nitrogen (TDN) concentrations were observed at Blackstone River @ Slater Mill (TN = 1,030 ppb, TDN = 961 ppb); the highest dissolved inorganic nitrogen (DIN) was at Blackstone River @ Stateline (850 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave. (TN = 708 ppb, TDN = 656 ppb, DIN = 524 ppb).

The next scheduled sampling date is February 7, 2024.​

Nutrient samples were collected from 12 river stations on January 10th. In the five days prior to sampling and the morning of, there were 4.67 inches of precipitation recorded at T.F. Green. 

Among the stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Ten Mile River @ Roger Williams Ave (TN = 1,840 ppb, TDN = 1,780 ppb, DIN = 1,620 ppb). The lowest TN was observed at Runnins River @ River Rd (556 ppb), while the lowest TDN and DIN were observed at Taunton River @ Berkley Bridge (TDN = 419 ppb, DIN = 155 ppb).

The next scheduled sampling date is January 24, 2024.

Nutrient samples were collected from 7 river stations on December 27th. In the five days prior to sampling, there were 0.04 inches of precipitation recorded at T.F. Green. 

Among the stations sampled, the highest total nitrogen (TN) concentration was observed at Blackstone River @ Bikepath Bridge (835 ppb); the highest total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) concentrations were at Pawtuxet River @ Broad St. (TDN = 962 ppb, DIN = 701 ppb). The lowest TN, TDN, and DIN were observed at Woonasquatucket River @ Valley St (TN = 650 ppb, TDN = 652 ppb, DIN = 504 ppb, average of duplicates).

The next scheduled sampling date is January 10, 2024.​

Nutrient samples were collected from 11 river stations and 8 bay stations on December 13th. Edgewood Shoal was sampled at the surface and bottom; all other bay stations were sampled at the surface only. In the five days prior to sampling, there were 0.64 inches of precipitation on December 10th and 1.65 inches on December 11th recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN) and total dissolved nitrogen (TDN) concentrations were observed at Warren Reservoir/Kickemuit River (TN = 849 ppb, TDN = 825 ppb); the highest dissolved inorganic nitrogen (DIN) was at Moshassuck River @ Footbridge at Mill St. (439 ppb). The lowest TN was at Pawtuxet River @ Broad St. (551 ppb), the lowest TDN was at Coles River @ Milford Rd (505 ppb), and the lowest DIN was at Palmer River @ Rt. 6 (115 ppb).

Among the bay stations sampled, the highest surface TN and TDN were observed at India Point Park (TN = 920 ppb, TDN = 742 ppb); the highest surface DIN was observed at Pomham Rocks (596 ppb). The lowest surface TN and DIN were observed at Pawtuxet Cove (TN = 614 ppb, DIN = 380 ppb), while the lowest surface TDN was at Conimicut Point (524 ppb). Chlorophyll a concentrations at the surface bay stations were low this week; concentrations averaged 0.311 μg/L overall with a maximum of 0.589 μg/L at Phillipsdale Landing.

The next scheduled sampling date is December 27, 2023.​

Nutrient samples were collected from 7 river stations on November 29th and 7 bay stations on November 30th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, there were 0.69 inches of precipitation recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) concentrations were observed at Blackstone River @ Bikepath Bridge (TN = 972 ppb, TDN = 965 ppb, DIN = 782 ppb, average of duplicates). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginsin Ave (TN = 519 ppb, TDN = 503 ppb, DIN = 362 ppb).

Among the bay stations sampled, the highest surface TN, TDN, and DIN were observed at Phillipsdale Landing (TN = 1,200 ppb, TDN = 1,020 ppb, DIN = 850 ppb). The lowest surface TN, TDN, and DIN were observed at Bullock Reach Buoy (TN = 524 ppb, TDN = 413 ppb, DIN = 221 ppb). Chlorophyll a concentrations at the surface bay stations were low this week; concentrations averaged 0.63 μg/L overall with a maximum of 1.15 μg/L at Bullock Reach Buoy.

The next scheduled sampling date is December 13, 2023.​