The Namami Gange Mission has introduced an innovative aquifer mapping initiative in Prayagraj, aimed at reviving the Ganga’s natural flow by improving groundwater recharge.
The project utilises cutting-edge tools such as smart water management systems, drone technology, and remote sensing to assess subsurface water reserves and enhance river ecosystems.
In a significant breakthrough, scientists discovered an ancient buried river beneath the Ganga–Yamuna doab between Prayagraj and Kanpur.
The river stretches nearly 200 kilometres in length, about 4 kilometres wide, and 15 to 25 metres deep.
This previously undocumented river system has added new depth to both scientific and cultural understanding of the region.
Scientists believe this buried river holds immense hydrological significance, as it can substantially boost groundwater storage and support main river channels during dry periods.
The aquifer study estimates that this ancient river can store approximately 3,500 to 4,000 million cubic metres (MCM) of water.
Experts have identified over 150 potential Managed Aquifer Recharge (MAR) sites across the region and plan to develop 20 to 25 of them in the initial phase.
Each recharge site will feature scientifically designed structures measuring around 5 metres by 5 metres by 3 metres, aimed at improving groundwater levels.
The Council of Scientific and Industrial Research – National Geophysical Research Institute (CSIR–NGRI) will oversee the installation of automatic water-level indicators at these sites for continuous monitoring.
The Uttar Pradesh State Groundwater and Irrigation Department is implementing the project in collaboration with Namami Gange authorities, marking a decisive step in sustainable groundwater management.
The use of drone surveys, satellite imaging, and geospatial data ensures precise mapping of underground water channels and reservoirs.
These technologies are being deployed not only to address current water scarcity but also to build long-term resilience against the impact of climate change.
The Prayagraj aquifer mapping initiative directly supports the Namami Gange Mission’s vision of ‘Aviral Ganga’—a continuous and clean river flow.
The initiative’s goal is to ensure consistent base flow in rivers by improving groundwater levels through strategic recharge zones.
By integrating traditional knowledge with modern science, this initiative offers a replicable model for sustainable river management across India.
It sets the groundwork for restoring ecological balance while ensuring water security for future generations.
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