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Government Of Assam Environment & Forest Pollution Control Board

Water Quality Monitoring

All pollution control activities ultimately aim at maintenance and restoration of the quality of the natural resources. Hence knowledge of the ambient quality of resources is a prerequisite for planning and execution of pollution control management strategies. The Board maintains a network for monitoring of the ambient quality of the rich and varied water resources of the state. There are 3 major schemes for ambient water quality monitoring with the Board. They are

MINARS Programme : Under Monitoring of Indian National Aquatic Resources programme financed by the Central Pollution Control Board this Board has already intensified its activities for monitoring and analyzing the surface water quality of certain selected rivers in the State. In this programme, a total no of 10 (ten) monitoring stations in the Brahmaputra River and its tributaries and 1 (one) in the Barak river have been monitored by the Board regularly at monthly intervals since the year 1987. The programme is still continuing with increasing number of monitoring stations from 11 to 29 (twenty nine) from August, 2002 which includes 10 (ten) ground water samples collected from selected parts of Assam.

List of Monitoring Stations under MINARS Programme

Sl. No.Name of RiversTypeFreq. Of MonitoringLocation of Monitoring Points
1.Brahmaputra RiverRiverMonthlyi) at Maijan, Dibrugarh
2.ii) at Balijan
3.iii) at Nimatighat, Jorhat
4.iv) at Pandu, Guwahati
5.v) at Dhenukhana Pahar, Tezpur
6.vi) at Jogighopa, Bongaigaon
7.Jhanji riverRiverQuarterlyat Jhanji, Sibsagar.
8.Dhansiri riverat Golaghat.
9.Subansiri riverat Gerukamukh, Lakhimpur
10.Elenga BeelPondafter confluence with HPC effluent at Jagiroad
11.Desang riverRiverat Gudamghat, Sapekhati
12.Buridihing riverat Margherita
13.Borak Riverafter confluence with HPC effluent at Panchgram, Cachar.
14.Bhogdoi riverat NH crossing, Jorhat.
15.Bharalu rivernear Pragjyotish College before confl. with Brahmaputra River at Guwahati
16.Deepar BeelPondat Guwahati.
17.Digboi RiverRiverat Lakhipathar
18.MorabharaliRiverbefore confluence with Brahmaputra River at Tezpur
19.Joysagar TankPondat Sibsagar
20.WellGroundwaterHalf Yearlyfrom Doigboi Area, Tinsukia district
21.WellGroundwaterfrom Karbi Anglong
22.WellGroundwaterfrom Sibsagar
23.WellGroundwaterfrom Sibsagar
24.WellGroundwaterfrom Jorhat
25.WellGroundwaterfrom Silchar
26.WellGroundwaterfrom Barpeta
27.WellGroundwaterfrom Bongaigaon
28.WellGroundwaterfrom Guwahati
29.WellGroundwaterfrom Guwahati

Other Monitoring :

The State of Assam is full of small lakes and tanks. The water quality of these lakes and tanks are being monitored time to time.

Also ground water monitoring of certain sensitive areas of the State have been carried out by this Board in time to time and such activities are still in progress whenever it is found necessary. The district wise ground water quality of some selected areas of the districts have also been monitored under the project called Zoning Atlas for Siting of Industries and is still going on.

Also, effluent discharged by all major industries including hazardous ones in the State are monitored in monthly basis whereas other smaller industries are monitored periodically or as and when necessary.