| WATER QUALITY DATA 2009 | ENVIS CPCB | ||||||||||||||||||||||||||||
| WATER QUALITY OF RIVER BRAHMAPUTRA - 2009 | ||||||||||||||||||||||||||||
| STATION CODE | LOCATIONS | TEMPERATURE şC | D.O. (mg/l) | pH | CONDUCTIVITY (µmhos/cm) | B.O.D. (mg/l) | NITRATE- N (mg/l) | NITRITE- N (mg/l) | FECAL COLIFORM (MPN/100ml) | TOTAL COLIFORM (MPN/100ml) | ||||||||||||||||||
| Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | Min | Max | Mean | ||
| WATER QUALITY CRITERIA | > 4 mg/l | 6.5-8.5 | < 2250 µmhos/cm | < 3 mg/l | < 2500 MPN/100ml | < 5000 MPN/100ml | ||||||||||||||||||||||
| 1260 | BRAHAMPUTRA AT KHERGHAT (A/C WITH DIBANG & DIHANG), ASSAM | 18 | 30 | 24.6 | 5.5 | 8.3 | 7.0 | 6.7 | 7.6 | 7.3 | 98 | 281 | 177 | 0.8 | 3 | 1.8 | 0.1 | 0.1 | 0.10 | 0 | 0 | 0 | 1 | 910 | 493 | |||
| 1030 | BRAHAMPUTRA AT DIBRUGARH, ASSAM | 19.5 | 28 | 23.5 | 4.7 | 8.6 | 7.2 | 6.6 | 7.3 | 7.1 | 95 | 239 | 138 | 0.4 | 4.7 | 1.7 | 0.1 | 0.7 | 0.20 | 0 | 360 | 40 | 360 | 910 | 586 | |||
| 1262 | BRAHAMPUTRA AT NIMATIGHAT, ASSAM | 17 | 29 | 24.0 | 4.4 | 8.2 | 6.0 | 6.1 | 7.9 | 7.0 | 69 | 236 | 136 | 1 | 4.1 | 2.1 | 0.1 | 0.1 | 0.10 | 0 | 730 | 217 | 300 | 2400 | 882 | |||
| 1526 | BRAHMPUTRA RIVER AT DHENUKHAPAHAR, ASSAM | 18 | 31 | 24.9 | 6.8 | 8.1 | 7.5 | 6.8 | 7.9 | 7.4 | 73 | 225 | 137 | 0.6 | 5 | 2.7 | 0.1 | 0.16 | 0.11 | 0 | 1100 | 212 | 300 | 24000 | 3181 | |||
| 1031 | BRAHAMPUTRA AT PANDU, ASSAM | 20 | 31 | 25.7 | 6.2 | 9.1 | 7.4 | 6.8 | 7.6 | 7.3 | 108 | 205 | 150 | 0.5 | 5.1 | 1.9 | 0.05 | 0.1 | 0.10 | 0 | 360 | 200 | 730 | 1500 | 1066 | |||
| 1299 | BRAHAMPUTRA AT JOGIJHOGA NEAR BRIDGE, ASSAM | 23 | 31 | 26.8 | 4.8 | 7.5 | 6.5 | 6.8 | 7.5 | 7.2 | 136 | 303 | 202 | 0.5 | 4.5 | 2.6 | 0.1 | 0.13 | 0.10 | 0 | 730 | 231 | 360 | 2200 | 950 | |||
| 2069 | BRAHMPUTRA RIVER NEAR WATER INTAKE POINT AT KACHARIGHAT, PANBAZAR, GUWAHATI, ASSAM | 21 | 29.5 | 25.1 | 6.2 | 9.2 | 8.0 | 7.2 | 8.1 | 7.5 | 120 | 206 | 161 | 0.8 | 5.4 | 2.5 | 0.1 | 0.1 | 0.10 | 0 | 730 | 243 | 730 | 1500 | 1047 | |||
| 2064 | BRAHMAPUTRA RIVER AT CHANDRAPUR, GUWAHATI | 21 | 30 | 26.5 | 6.5 | 10.5 | 7.9 | 6.7 | 7.2 | 7.0 | 115 | 159 | 137 | 0.7 | 3.6 | 2.0 | 0.1 | 0.1 | 0.10 | 0 | 360 | 120 | 360 | 910 | 667 | |||
| 2067 | BRAHMPUTRA RIVER AT SUALKUCHI, DIST. KAMRUP, ASSAM | 23 | 29 | 25.5 | 6.2 | 10.3 | 7.8 | 7.3 | 7.9 | 7.6 | 110 | 299 | 236 | 0.3 | 2.3 | 1.5 | 0.1 | 0.1 | 0.10 | 0 | 360 | 120 | 360 | 730 | 597 | |||
| 2066 | BRAHMAPUTRA RIVER AT DHUBRI | 22 | 29 | 26.0 | 6.1 | 7.1 | 6.6 | 6.8 | 7.4 | 7.1 | 131 | 157 | 148 | 1.3 | 4.5 | 2.5 | 0.1 | 0.1 | 0.10 | 0 | 0 | 0 | 720 | 1100 | 1005 | |||