Nutrients Sampling

Nutrient samples were collected from seven river stations and one bay station on November 26^th. The bay station was sampled at the surface and bottom. In the five days prior to sampling, 0.59” of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN) and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet River @Broad St (TN = 1,740 ppb, DIN = 1,562.0 ppb). The highest total dissolved nitrogen (TDN) was observed at Woonasquatucket River @Valley St (TDN = 1820 ppb). The lowest TN and TDN were observed at Moshassuck River @Footbridge at Mill St (TN = 536 ppb, TDN = 723 ppb). The lowest DIN was observed at Woonasquatucket River @ Manton Ave. Bridge (DIN = 389.4 ppb).

At the bay station sampled, Phillipsdale Landing, the surface concentrations were as follows: total nitrogen (TN) = 1,420 ppb, total dissolved nitrogen (TDN) = 1,380 ppb and dissolved inorganic nitrogen (DIN) = 1018.5 ppb.

The next scheduled sampling date is December 10^th, 2025.

Nutrient samples were collected from six bay stations on November 13^th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 0.69” of precipitation were recorded at T.F. Green. 

Among the bay stations sampled, the highest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet Cove (TN = 1,160 ppb, TDN = 1200 ppb, DIN = 940.8 ppb). The lowest surface TN, TDN, and DIN were observed at Bullock Reach (TN = 540 ppb, TDN = 464 ppb, DIN = 258.0 ppb).

The next scheduled sampling date is November 26^th, 2025.

Nutrient samples were collected from seven river stations on November 12^th.  In the five days prior to sampling, 0.69” of precipitation were recorded at T.F. Green.

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet River @ Broad St. (TN = 1,520 ppb, TDN = 2,430 ppb, DIN = 1,340.6 ppb). The lowest TN and DIN were observed at Moshassuck River @ Footbridge at Mill St. (TN = 533 ppb, DIN = 342.2 ppb). The lowest TDN was observed at Woonasquatucket River @ Manton Ave. Bridge (669 ppb).

The next scheduled sampling date is November 13^th, 2025.

Nutrient samples were collected from thirteen river stations on October 29^th.  In the five days prior to sampling, trace amounts of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Ten Mile River @ Central Ave. (TN = 2,710 ppb, TDN = 2,720 ppb, DIN = 2,640.0 ppb). The lowest TN was observed at Moshassuck River @ Footbridge at Mill St. (590 ppb). The lowest TDN was observed at Palmer River @ Rt. 6 (691 ppb). The lowest DIN was observed at Coles River @ Milford Rd. (101.4 ppb).

The next scheduled sampling date is November 13^th, 2025.

Nutrient samples were collected from seven river stations and seven bay stations on October 15^th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 2.41” of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Blackstone River @ Bikepath Bridge (TN = 1,390 ppb, TDN = 1,390 ppb, DIN = 971.9 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Footbridge at Mill St. (TN = 577 ppb, TDN = 542 ppb, DIN = 310.8 ppb).

Among the bay stations sampled, the highest surface total nitrogen (TN) and dissolved inorganic nitrogen (DIN) were observed at Phillipsdale Landing (TN = 1,320 ppb, DIN = 833.0 ppb). The highest surface total dissolved nitrogen (TDN) was observed at Pawtuxet Cove (1770 ppb). The lowest surface TN, TDN, and DIN were observed at Bullock Reach (TN = 642 ppb, TDN = 522 ppb, DIN = 245 ppb).

The next scheduled sampling date is October 29^th, 2025.

Nutrient samples were collected from thirteen river stations and eight bay stations on October 1st. In the five days prior to sampling, 0.06” of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Ten Mile River @ Central Ave. (TN = 1,860 ppb, TDN = 1,830 ppb, DIN = 1,516.0 ppb). The lowest TN was observed at Coles River @ Milford Rd. (661 ppb). The lowest TDN was observed at Taunton River @ Berkley Bridge (385 ppb). The lowest DIN was observed at Taunton River @ River Rd. (119.9 ppb).

Among the bay stations sampled, the highest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Phillipsdale Landing (TN = 967 ppb, TDN = 737 ppb, DIN = 415.0 ppb). The lowest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pomham Rocks (TN = 556 ppb, TDN = 363 ppb, DIN = 149.9 ppb).  

The next scheduled sampling date is October 15^th, 2025.

Nutrient samples were collected from six river stations and seven bay stations on September 17^th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, no precipitation was recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Ten Mile River @ Central Ave. (TN = 2,250 ppb, TDN = 2,410 ppb, DIN = 1,946.0 ppb). The lowest TN were observed at Runnins River @ River Rd. (486 ppb). The lowest TDN, and DIN were observed at Palmer River @ Rt. 6 (TDN = 327 ppb, DIN = 24.2 ppb).

Among the bay stations sampled, the highest surface total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet Cove (TN = 1,140 ppb, TDN = 892 ppb, DIN = 577.4 ppb). The lowest surface TN and TDN were observed at Conimicut Point (TN = 492 ppb, TDN = 210 ppb). The lowest surface DIN was observed at Bullock Reach (35.51 ppb). The highest concentration of chlorophyll a was observed at Pawtuxet Cove (25.664 ug/L).

The next scheduled sampling date is October 1^st, 2025.

Nutrient samples were collected from seven river stations and eight bay stations on September 3^rd. All bay stations were sampled at the surface. In the five days prior to sampling, no precipitation was recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN) was observed at Pawtuxet River @Broad Str. (TN = 1,450 ppb). The highest total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) were observed at Blackstone River @ Stateline (TDN = 1,940 ppb, DIN = 1,467.7 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave (TN = 598 ppb, TDN = 703 ppb, DIN = 454.4 ppb).

Among the bay stations sampled, the highest surface TN was observed at Phillipsdale Landing (1,220 ppb). The highest TDN and DIN were observed at Pawtuxet Cove (TDN = 969 ppb, DIN = 729.3). The lowest surface TN and TDN were observed at Bullock Reach (TN = 453 ppb, TDN = 162 ppb). The lowest surface DIN was observed at five of the eight bay stations (13 ppb, reflecting minimum detection limits for DIN).

The next scheduled sampling date is September 17^th, 2025

Nutrient samples were collected from six river stations and seven bay stations on August 20^th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 0.01” of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN), total dissolved nitrogen (TDN), and dissolved inorganic nitrogen (DIN) were observed at Pawtuxet River @ Broad St. (TN = 1,600 ppb, TDN = 1,650 ppb, DIN = 1,327.2 ppb). The lowest TN, TDN, and DIN were observed at Moshassuck River @ Higginson Ave (TN = 674 ppb, TDN = 801 ppb, DIN = 629.8 ppb).

Among the bay stations sampled, the highest surface TN was observed at Phillipsdale Landing (1,460 ppb). The highest TDN and DIN were observed at Pawtuxet Cove (TDN = 1,090 ppb, DIN = 796). The lowest surface TN and TDN were observed at Conimicut Point (TN = 482 ppb, TDN = 130 ppb). The lowest surface DIN was observed at four of the seven bay stations (13 ppb, reflecting minimum detection limits for DIN).

The next scheduled sampling date is September 3^rd, 2025.​

Nutrient samples were collected from thirteen river on August 6^th. In the five days prior to sampling, 0.46 inches of precipitation were recorded at T.F. Green. 

Among the river stations sampled, the highest total nitrogen (TN) was observed at Pawtuxet River @ Broad St. (1,450 ppb). The highest total dissolved nitrogen (TDN) and dissolved inorganic nitrogen (DIN) were observed at Ten Mile River @ Central Ave. (TDN = 1,315 ppb, DIN = 1,058.8 ppb, averages of duplicates). The lowest TN was observed at Runnins River @ River Rd. (386 ppb), and the lowest TDN was observed at Taunton River @ Berkley Bridge (303 ppb). The lowest DIN was observed at Palmer River @ Rt. 6 (13 ppb, reflecting minimum detection limits for DIN).

The next scheduled sampling date is August 20^th, 2025.​