| WATER QUALITY DATA 2008 | CPCB ENVIS | ||||||||||||||||||||||||||||
| WATER QUALITY OF RIVER TEESTA, DIKCHU, MANEY KHOLA, RANICHU, KUNDLI, DIKHOW, KOHORA, BOGINADI, RANGA NADI, PANCHNAI, KAPILI, BEKI, SANKOSH, BARAK, SONAI & KUSHIYARA - 2008 | ||||||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||
| 1801 | RIVER TEESTA AFTER CONFIUENCE OF RIVERS LACHENCHU AND LACHUNGCHU AT CHUNGTHAANG, SIKKIM | 8.5 | 12.0 | 10.4 | 6.0 | 7.0 | 6.5 | 210 | 270 | 238 | 2.0 | 3.0 | 2.45 | 2.0 | 3.2 | 2.6 | 40 | 170 | 110 | 80 | 280 | 221 | ||||||
| 1807 | RIVER TEESTA AFTER CONFLUENCE WITH RIVER RANICHU AT SINGTAM | 9.0 | 12.5 | 11.0 | 6.4 | 7.2 | 6.7 | 240 | 280 | 258 | 2.2 | 3.5 | 3.01 | 2.3 | 3.4 | 2.9 | 80 | 220 | 140 | 170 | 350 | 258 | ||||||
| 1808 | RIVER TEESTA AFTER CONFLUENCE WITH RANGICHU AFTER MEETING THE INDUSTRIAL EFFLUENTS FROM THE TOWN RANICHU | 8.0 | 12.0 | 10.6 | 6.2 | 7.0 | 6.6 | 230 | 280 | 262 | 2.5 | 3.6 | 3.11 | 2.4 | 3.2 | 3.0 | 100 | 170 | 146 | 220 | 350 | 277 | ||||||
| 1809 | RIVER TEESTA AT MELLI DOWNSTREAM, SIKKIM | 9.0 | 12.0 | 10.7 | 6.1 | 6.9 | 6.5 | 250 | 290 | 267 | 2.6 | 3.8 | 3.23 | 2.8 | 3.5 | 3.1 | 110 | 220 | 148 | 280 | 350 | 290 | ||||||
| 1947 | TEESTA AT SILIGURI | 18 | 22 | 20 | 8.5 | 15.2 | 11.3 | 7.1 | 7.4 | 7.3 | 60 | 73 | 66 | 0.8 | 2.0 | 1.40 | 0.1 | 0.3 | 0.2 | 11000 | 80000 | 36000 | 22000 | 130000 | 58000 | |||
| 1802 | RIVER DIKCHU BEFORE CONFIUENCE WITH RIVER TEESTA NEAR NHPC HYDROELECTRIC POWER PROJECT, SIKKIM | 8.0 | 12.0 | 10.4 | 6.3 | 6.8 | 6.5 | 220 | 280 | 253 | 2.0 | 3.4 | 2.52 | 2.2 | 3.1 | 2.6 | 40 | 170 | 110 | 110 | 280 | 221 | ||||||
| 1803 | RIVER MANEY KHOLA AT BURTUK NEAR ARMY BASE CAMP, 4 KM U/S OF GANGTOK, SIKKIM | 9.0 | 12.0 | 10.8 | 6.0 | 7.2 | 6.5 | 230 | 270 | 253 | 2.0 | 3.2 | 2.52 | 2.2 | 3.3 | 2.7 | 40 | 140 | 99 | 90 | 280 | 215 | ||||||
| 1804 | RIVER MANEY KHOLA AFTER CONFLUENCE WITH RAY KHOLA AT ADAMPOOL AFTER MEETING WASTE OF STP, GANGTOK D | 9.0 | 12.0 | 11.0 | 6.4 | 7.0 | 6.6 | 240 | 280 | 258 | 2.2 | 3.2 | 2.63 | 2.1 | 3.3 | 2.6 | 50 | 170 | 96 | 130 | 280 | 204 | ||||||
| 1805 | AFTER CONFLUENCE OF RANICHU AND RORACHU AT RANIPOOL, SIKKIM | 8.5 | 12.0 | 11.1 | 6.2 | 6.9 | 6.5 | 240 | 280 | 258 | 2.2 | 3.2 | 2.77 | 2.2 | 3.2 | 2.6 | 70 | 120 | 95 | 170 | 280 | 224 | ||||||
| 1806 | RANICHU BEFORE CONFLUENCE WITH RIVER TEESTA AT SINGTAM, SIKKIM | 8.0 | 12.5 | 10.9 | 6.2 | 6.8 | 6.4 | 230 | 280 | 251 | 2.4 | 3.5 | 2.90 | 2.2 | 3.5 | 2.8 | 50 | 170 | 118 | 170 | 300 | 237 | ||||||
| 2229 | KUNDLI RIVER AT KUNDLI/ SAPAKHOWA, SADIA. | 18 | 26 | 22 | 5.6 | 8.3 | 6.5 | 6.7 | 7.0 | 6.8 | 201 | 213 | 205 | 0.9 | 3.1 | 2.20 | 0.1 | 0.1 | 0.1 | 0 | 730 | 243 | 1 | 1500 | 600 | |||
| 2231 | DIKHOW RIVER AT DIKHOW BRIDGE SIVASAGAR | 22 | 24 | 23 | 5.6 | 7.0 | 6.1 | 6.9 | 7.4 | 7.1 | 170 | 176 | 172 | 0.6 | 2.3 | 1.23 | 0.1 | 0.1 | 0.1 | 0 | 360 | 120 | 300 | 1100 | 770 | |||
| 2232 | KOHORA RIVER AT N.H. CROSSING, KOHORA | 26 | 30 | 28 | 6.8 | 6.8 | 6.8 | 6.4 | 6.8 | 6.6 | 43 | 45 | 44 | 1.5 | 2.5 | 2.00 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 300 | 360 | 330 | |||
| 2233 | BOGINADI NEAR BRIDGE NH-52, LAKHIMPUR | 15 | 24 | 21 | 8.1 | 8.5 | 8.2 | 6.8 | 7.2 | 7.0 | 85 | 106 | 96 | 0.6 | 2.2 | 1.53 | 0.1 | 0.1 | 0.1 | 0 | 300 | 100 | 1 | 700 | 467 | |||
| 2234 | RANGA NADI D/S OF HYDEL PROJECT | 15 | 24 | 21 | 7.8 | 8.2 | 8.0 | 6.9 | 7.3 | 7.1 | 101 | 114 | 108 | 0.5 | 2.6 | 1.60 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 1 | 300 | 101 | |||
| 2235 | PANCHNAI RIVER AT NH-52 CROSSING, ORANG | 19 | 28 | 24 | 7.7 | 8.6 | 8.1 | 7.2 | 7.6 | 7.4 | 130 | 136 | 133 | 0.9 | 1.4 | 1.20 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 300 | 730 | 463 | |||
| 2236 | KAPILI RIVER AT DHARMTUL BRIDGE, NH-31, NAGAON | 27 | 33 | 29 | 6.1 | 9.0 | 7.8 | 6.9 | 7.3 | 7.2 | 105 | 110 | 107 | 0.6 | 2.0 | 1.10 | 0.1 | 0.1 | 0.1 | 0 | 360 | 240 | 1 | 910 | 607 | |||
| 2238 | BEKI RIVER AT NH-37 CROSSING AT BARPETA ROAD | 27 | 31 | 29 | 5.4 | 7.8 | 6.9 | 5.8 | 7.7 | 7.1 | 135 | 140 | 137 | 0.3 | 0.7 | 0.50 | 0.1 | 0.2 | 0.1 | 0 | 360 | 120 | 700 | 910 | 840 | |||
| 2239 | SANKOSH RIVER, DHUBRI | 28 | 28 | 28 | 6.9 | 6.9 | 6.9 | 7.0 | 7.0 | 7.0 | 125 | 125 | 125 | 1.6 | 1.6 | 1.60 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 1 | 1 | 1 | |||
| 2240 | BARAK RIVER AT D/S OF SILCHAR | 12 | 12.3 | 12 | 7.0 | 8.3 | 7.5 | 6.8 | 7.5 | 7.1 | 140 | 154 | 148 | 1.0 | 2.5 | 1.83 | 0.1 | 0.2 | 0.1 | 0 | 0 | 0 | 910 | 1500 | 1170 | |||
| 2241 | SONAI RIVER AT SONAI | 11.6 | 12.3 | 12 | 7.4 | 8.0 | 7.6 | 7.0 | 7.5 | 7.3 | 140 | 160 | 153 | 0.7 | 1.4 | 1.03 | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 | 1 | 1100 | 487 | |||
| 2242 | KUSHIARA RIVER AT KARIMGANJ | 11.6 | 12.3 | 12 | 7.5 | 8.4 | 7.8 | 6.8 | 7.3 | 7.0 | 152 | 162 | 155 | 0.4 | 2.4 | 1.20 | 0.1 | 1.2 | 0.5 | 0 | 360 | 120 | 360 | 1400 | 890 | |||