According to the Dynamic Ground Water Resource Assessment Report for the entire country for the year 2022, groundwater extraction in India saw an 18-year decline.
- The assessment was carried out jointly by Central Ground Water Board (CGWB), States and Union Territories.
- Such joint exercises between the CGWB and States/Union Territories were carried out earlier in 1980, 1995, 2004, 2009, 2011, 2013, 2017 and 2020.
Highlights of the report –
- The total annual groundwater recharge for the entire country is 437.6 billion cubic metres (bcm) and annual groundwater extraction for the entire country is 239.16 bcm.
- By comparison, an assessment in 2020 found that the annual groundwater recharge was 436 bcm and extraction 245 bcm. In 2017, recharge was 432 bcm and extraction 249 bcm. The 2022 assessment suggests that groundwater extraction is the lowest since 2004, when it was 231 bcm.
- Out of the total 7,089 assessment units in the country, 1,006 units have been categorised as “over-exploited” in the report.
What does it mean?
- The analysis indicates increase in ground water recharge which may mainly be attributed to increase in recharge from canal seepage, return flow of irrigation water and recharges from water bodies/tanks & water conservation structures.
- The improvement in ground water conditions in 909 assessment units in the country when compared with 2017 assessment data.
- In addition, overall decrease in number of over-exploited units and decrease in stage of groundwater extraction level have also been observed.