India, Jan. 14 -- New Delhi

The Central Ground Water Board (CGWB) said that hydrographs of sub-surface aquifers in Lutyens' Delhi have shown a rising groundwater trend, and recommended revival of 57 defunct tubewell sites with high water table and development of artificial groundwater recharge structures at 20 sites that face waterlogging during monsoon, officials of the New Delhi Municipal Council (NDMC) said.

The CGWB report, a copy of which was accessed by HT, states that the NDMC area is underlain by unconsolidated sediments of quaternary to recent age quartizite and the deposit of bedrock varies from 5mbgl (metres below ground level) at Buddha Jayanti Park, 91 mbgl at Pragati Maidan, to 74 mbgl at Lodhi Garden and 16mbgl at Rashtra...