GSI to probe land subsidence in Godavari delta in Andhra Pradesh
GS3Economy · S&T · Environment · Security· Nuclear & new energy technology· Prelims + Mains·
Why in news
The Geological Survey of India (GSI) is investigating alleged land subsidence in the Central Godavari Delta, Andhra Pradesh, potentially caused by a defunct irrigation drain system and sea-level rise.
Background
The GSI-Hyderabad and National Institute of Hydrology (NIH-Roorkee) are collaborating with the Water Resource Department to investigate the inundation of 10,000 acres of farmland in Malkipuram and Sakhinetipalli mandals. ISRO has been consulted to provide topographic data to assess topographical changes in the delta.
Facts for Prelims
- BodyGSI: Geological Survey of India, headquartered in Hyderabad for this investigation
- BodyNIH: National Institute of Hydrology, located in Roorkee
- FactArea affected: At least 10,000 acres of farmland in Malkipuram and Sakhinetipalli mandals
- PlaceLocation: Central Godavari Delta, Andhra Pradesh
For Mains
Q. Discuss the geological and hydrological factors contributing to land subsidence in coastal deltas and suggest measures to mitigate the impact of sea-level rise on agricultural productivity.
Dimensions to cover in your answer
- Hydrological imbalance: Impact of defunct irrigation infrastructure on groundwater and soil stability
- Coastal vulnerability: Synergy between rising sea levels and local land subsidence on deltaic agriculture
Keywords: Land subsidence · Deltaic topography · Coastal erosion · Hydrological management · Geological survey
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