Aquatic Pollution and Coastal Management

Unit 11 : Monitoring and control of pollution

11.11.Water Quality Profile of Major Rivers

River Baitrani
The water quality did not meet the desired criteria due to high levels of BOD at all the monitored locations. Increasing spatial trend along the direction of flow observed for BOD, DO, and total coliform during the year. However, the concentrations have been observed within limits.
River Brahmani
The river did not conform to the desired level due to high BOD throughout the river stretch except at Rengali, which meets the desired Water Quality Criteria. Total Coliforms were within the water quality criteria limits except at Dharmashala and Pattamundai, where these were just meeting the desired level. DO is always observed conforming to the desired level.
River Brahmputra
The river did not conform to the desired level throughout the stretch, except at Nimatighat and Pandu, where it is just near to the desired class. DO and BOD concentrations were observed within the water quality criteria limit of desired class throughout the stretch.
River Cauvery
In the entire stretch, the levels of DO were always within the desired levels, whereas the levels of BOD and total coliforms were much higher than the desired levels at some locations.
River Ganga
BOD exceeds the desired water quality criteria limits at downstream Kanpur, downstream Varanasi and Trighat. total coliforms were higher than the criteria limit in the river stretch up to Rajmahal and thereafter it has been well within the criteria limit of the desired class. However, DO level meet the desired level at all the locations except at downstream Varanasi.
River Godavari
levels of DO and total coliforms are almost meeting the desired class in the entire stretch between upstream of Gangapur dam and downstream Rajahmundry . The levels of BOD were higher than the criteria limits in the stretch between Gangapur dam and Raher and there after it was conforming to be the designated best use criteria class.
River Krishna
The river water quality did not match the desired levels at all the monitored locations in the stretch between Mahabaleshwar and Sangli and at Rajapurweri, due to high levels of BOD.
River Mahi
Total coliforms were higher than the criteria limit at Badnawar, the first monitoring location and thereafter in the entire stretch it was conforming to the criteria limit for the desired class.
River Mahanadi
The river water quality in terms of BOD did not conform to the desired level at monitored sites in the stretch starting from Hirakud reservoir till the end of the stretch downstream of Cuttak .
River Narmada
The total coliforms were higher at the bathing places throughout the river viz. Sethanighat upstream, Hoshangabad downstream and Garudeshwar during the year. BOD was observed to exceed at Hoshangabad downstream only.
River Panner
Adequate data for total coliforms are not available. In terms of DO and BOD, the water quality was meeting the desired class in the entire stretch.
River Sabarmati
Water quality of river Sabarmati in the entire stage stretch (starting form Jain Mahudi Temple, 150km, from origin to village Miroli Taluka Descroi, Ahmedabad) was very bad in terms of BOD and Total Coliforms.
River Sabarnarekha
Total coliforms were exceeding the desired level at all the monitored locations except at Chandil bridge. There is inadequate data for BOD parameter.
River Tapi
DO values for the entire stretch starting from Nepa Nagar to Kathore is meeting the desired class. In case of BOD, it was exceeding from Ajand village till end of the stretch i.e. Kathore, whereas in case of total coliforms it is meeting the desired class in the same stretch only.