Bhola-Baleswar River System
  Bogi Sharankhola Supati Supati Canal
Geographical Location 89°50'21.9"E, 22°12'54.4"N 89°48'42.4"E, 22°12'35.6"N 89°49.07'E, 22°03.442'N 89°48.93'E,
22°3.128'N 
Temperature(°C) 25.39 ± 3.72 25.19 ± 3.76 25.95 ± 4.09 25.71 ± 4.05
pH 7.04 ± 0.21 6.87 ± 0.14 7.19 ± 0.23 7.23 ± 0.30
Transparency(cm) 25 ± 5.72 28.33 ± 6.55 25.33 ± 5.25 24.66 ± 4.11
DO(mgL-1) 5.43 ± 0.03 5.53 ± 0.08 5.29 ± 0.16 5.16 ± 0.21
Salinity 9.17 ± 5.24 8.29 ± 4.50 10.33 ± 5.72 9.72 ± 5.40
Nitrate(mgL-1) 0.603 ± 0.73 0.425 ± 0.48 0.470 ± 0.54 0.433 ± 0.49
Phosphate(mgL-1) 0.015 ± 0.005 0.029 ± 0.011 0.011 ± 0.005 0.023 ± 0.012
Ammonium( mgL-1) 0.041 ± 0.037 0.038 ± 0.018 0.064 ± 0.039 0.066 ± 0.041
Silicate( mgL-1) 16.106 ± 6.81 17.56 ± 9.22 16 ± 8.27 17.20 ± 9.56
Chlorophyll-a(μgL 1) 2.82 ± 2.28 1.71 ± 0.87 2 ± 0.87 2.33 ± 1.45
Rupsha-Pashur River System
  Karamjol Karamjol Canal Joymoni Harbaria Harbaria Canal
Geographical Location 89°35.962'E, 22°25.97'N 89°35.445'E, 22°25.737'N 89°37.757'E, 22°21.053'N 89°36.563'E, 22°17.974'N 89°36.985'E,
22°17.998'N
Temperature(°C) 27.15 ± 4.48 27.32 ± 4.49 27.57 ± 4.30 27.05 ± 4.63 26.78 ± 4.79
pH 7.55 ± 0.18 7.55 ± 0.24 7.51 ± 0.18 7.64 ± 0.14 7.67 ± 0.10
Transparency(cm) 13.33 ± 2.36 20 ± 7.48 16 ± 5.66 23.33 ± 11.09 22.66 ± 8.99
DO( mgL-1) 6.1 ± 0.81 5.91 ± 1.09 5.93 ± 0.94 6.06 ± 0.76 6.25 ± 0.80
Salinity 9.96 ± 3.13 9.86 ± 3.64 9.22 ± 2.52 11.22 ± 4.51 10.54 ± 3.72
Nitrate( mgL-1) 0.322 ± 0.26 0.627 ± 0.42 0.375 ± 0.27 0.404 ± 0.30 0.317 ± 0.21
Phosphate( mgL-1) 0.449 ± 0.26 0.215 ± 0.17 0.291 ± 0.14 0.168 ± 0.12 0.256 ± 0.10
Ammonium( mgL-1) 0.050 ± 0.025 0.052 ± 0.026 0.049 ± 0.022 0.051 ± 0.023 0.047 ± 0.025
Silicate( mgL-1) 12.19 ± 5.61 14.04 ± 4.50 11.45 ± 6.22 13.11 ± 7.36 12.19 ± 6.29
Chlorophyll-a (μgL-1) 1.38 ± 0.81 1.12 ± 0.57 1.44 ± 0.86 1.53 ± 1.04 1.63 ± 1.07
Khalpatua-Arpangachia River System
  Pashurtala Pashurtala Canal Kalagashi Kalagashi Canal Nildumur Arpangachia
Geographical Location 89°11'934"E, 22°14'038"N 89°12'043"E, 22°14'077"N 89°14'541"E, 22°12'685"N 89°14'638"E, 22°12'392"N 89°14'708"E, 22°14'828"N 89°18'581"E, 22°12'406"N
Temperature(°C) 27.02 ± 3.40 27.17 ± 3.25 27.12 ± 3.19 27.26 ± 3.49 27.15 ± 3.57 27.21 ± 3.56
pH 7.48 ± 0.19 7.64 ± 0.09 7.63 ± 0.11 7.65 ± 0.13 7.60 ± 0.02 7.65 ± 0.16
Transparency(cm) 34.66 ± 18.84 34 ± 22.69 24.33 ± 7.93 30.66 ± 13.70 31.33 ± 10.66 29.66 ± 10.34
DO( mgL-1) 4.96 ± 0.50 5.02 ± 0.79 4.94 ± 0.72 5.08 ± 0.99 5.18 ± 0.84 5.04 ± 0.54
Salinity 14.91 ± 4.69 15.39 ± 4.27 14.66 ± 5.46 14.72 ± 5.90 14.72 ± 5.94 14.22 ± 6.03
Nitrate( mgL-1) 0.269 ± 0.26 0.247 ± 0.13 0.083 ± 0.03 0.123 ± 0.04 0.091 ± 0.003 0.145 ± 0.02
Phosphate( mgL-1) 0.108 ± 0.03 0.109 ± 0.03 0.099 ± 0.01 0.119 ± 0.008 0.118 ± 0.04 0.108 ± 0.03
Ammonium( mgL-1) 0.153 ± 0.19 0.117 ± 0.13 0.176 ± 0.16 0.155 ± 0.17 0.109 ± 0.12 0.121 ± 0.14
Silicate( mgL-1) 9.404 ± 6.32 10.689 ± 8.30 9.98 ± 7.26 9.98 ± 7.06 8.238 ± 5.17 8.311 ± 4.26
Chlorophyll-a(μgL-1) 0.813 ± 0.24 1.14 ± 0.91 0.87 ± 0.35 0.806 ± 0.39 1.17 ± 0.84 0.89 ± 0.52
Table 1: Annual mean values of water quality variables in Rupsha-Pashur, Khalpatua- Arpangachia and Bhola-Baleswar river systems.