Punjab tops country in over-exploitation of groundwater

In Punjab, 79 per cent of the assessment units showed the annual groundwater extraction to be more than the assessed annual extractable groundwater resources

Punjab tops country in over-exploitation of groundwater

Photo for representation only

Vijay Mohan

Tribune News Service

Chandigarh, September 15

The over-exploitation of groundwater resources is the highest in Punjab among all other states in the country. The extraction of groundwater is increasing in the agrarian state, government data has revealed.

In Punjab, 79 per cent of the assessment units showed the annual groundwater extraction to be more than the assessed annual extractable groundwater resources, according to information placed by the Department of Water Resources, River Development and Ganga Rejuvenation in the ongoing session of the Rajya Sabha. This figure was 76 per cent last year.

Punjab is followed by Delhi with 65 per cent and Rajasthan with 63 per cent. In Haryana, 61 per cent of the assessment units were being over-exploited. While over-exploitation of groundwater is the highest in this region, there are many states and union territories where there is no over-exploitation.

Irrigation accounts for over 96 per cent of groundwater use in Punjab. A major reason for over-exploitation of groundwater is the largescale cultivation of paddy in Punjab, which is water-intensive and the dependence on groundwater over canal or river water in many parts of the state.

Monsoon is an important factor in recharge of groundwater. The rains in Punjab this season have been 10 per cent below the long period average so far. From June 1 to September 14, the state received 391.3 mm against the normal of 437.2 mm, according to the India Meteorological Department.

The Ministry of Jal Shakti has constituted a committee under the Central Ground Water Board (CGWB) for fresh assessment of dynamic groundwater resources in the country for 2020 in collaboration with the states and UTs. Earlier, such assessments were done in 2013 and 2017.

According to a CGWB official, the wheat and paddy cropping pattern in Punjab has led to manifold increase in demand for water. About 90 per cent of the state’s area is underlain by quaternary alluvial deposits that are important sources of abundant and dependable groundwater supplies which are being exploited.

Though there is no proposal to restrict the use of groundwater in the agriculture sector, central and state authorities are regulating the groundwater use by industries and mining projects. As per the ministry’s assessment, the annual groundwater extraction for all uses is 249 billion cubic metres, out of which 89 per cent is utilised for irrigation and the remaining 11 per cent for industrial and domestic use.

 

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