Location

Physicochemical parameters

DO (mg/L)^a

pH^b

TDS (mg/L)^c

Temp (˚C)^d

Turbidity (cm)^e

Cerro Alto

8.4 ± 4.3

7.9 ± 0.4

434 ± 120

26.2 ± 1.4

76.1 ± 36.2

Margara Creek

8.7 ± 3.9

8.1 ± 0.6

212 ± 104

27.8 ± 1.4

62.8 ± 22.5

Margara Canal

8.6 ± 3.7

7.8 ± 0.4

229 ± 70

25.2 ± 1.5

95.1 ± 13.0

UPR Agricultural Experimental Substation Drainage Canal

7.2 ± 5.2

7.7 ± 0.6

269 ± 75

25.7 ± 2.5

12.1 ± 13.9

Principal Drainage Canal (Combined Inlet)

1.8 ± 1.3

7.2 ± 0.3

255 ± 65

26.5 ± 1.9

69.2 ± 27.2