A 24-domain hydro-spatial collaboration will use real-time space imagery for groundwater mapping, flood prediction, and riverine plastic pollution monitoring.
The Indian Space Research Organisation (ISRO) and the Ministry of Jal Shakti formalised a landmark Memorandum of Understanding (MoU) on June 1, 2026, committing both agencies to a structured collaboration across 24 critical research and monitoring domains at the intersection of space technology and water resource management. The agreement establishes a framework for deploying India’s advanced earth observation satellite constellation in service of the country’s most pressing hydrological challenges.
The scope of the MoU is substantially broader than previous bilateral cooperation between the two agencies. It encompasses deep groundwater assessment using multi-spectral and synthetic aperture radar (SAR) imagery, real-time flood forecasting and inundation mapping, watershed health monitoring, sedimentation tracking in reservoirs, snowpack and glacial melt monitoring in the Himalayan catchments, crop water stress assessment, and — notably — systematic mapping of macroplastic distribution across vulnerable Indian river basins.
Why Space Technology for Water Governance?
India’s water crisis is fundamentally a data problem as much as a physical scarcity problem. Groundwater depletion — the country extracts more groundwater than any other nation — proceeds faster than it is accurately measured. Flood forecasting systems are often constrained by sparse gauge networks and inadequate terrain data. Pollution monitoring, including the critical problem of plastic accumulation in rivers such as the Ganga, Yamuna, Godavari, and Krishna, is largely reactive rather than anticipatory.
Earth observation satellites, particularly India’s Resourcesat and RISAT series alongside ISRO’s newer high-resolution optical and SAR platforms, offer spatial coverage, temporal frequency, and spectral sensitivity that ground-based networks cannot match at comparable cost. SAR imagery, in particular, can penetrate cloud cover — a significant operational advantage during the monsoon season when flood events are most frequent and traditional remote sensing is least effective.
The Groundwater and Flood Imperatives
The Central Ground Water Board (CGWB), which operates under the Ministry of Jal Shakti, has identified over-extraction in approximately 16% of India’s assessment units as ‘critical’ or ‘over-exploited’. Satellite-derived subsidence data from platforms such as Sentinel-1 (European) and future NISAR (NASA-ISRO) can serve as a proxy for aquifer compaction, providing a nationwide, near-real-time picture of groundwater depletion dynamics that existing borewell monitoring networks cannot furnish.
On flood forecasting, the MoU is expected to dramatically strengthen the Central Water Commission’s modelling capabilities by integrating ISRO’s near-real-time discharge and inundation products. India’s 2024 and 2025 monsoon seasons both produced record flood events across the Eastern and Northeastern states; improved 72-hour and 7-day inundation forecasting with satellite-assimilated data could significantly improve evacuation lead times and disaster preparedness.
Macroplastic Monitoring: A Scientific First for Indian Rivers
Among the 24 domains, the commitment to map macroplastic distribution across Indian river basins stands out as a forward-looking scientific priority. India generates over 9 million tonnes of plastic waste annually, a significant fraction of which enters its river systems. Satellite-based macroplastic detection using high-resolution optical imagery and machine learning classifiers has emerged as a viable methodology in recent international research, with demonstration studies conducted on the Rhine, Mekong, and Amazon rivers. The ISRO-Jal Shakti collaboration would represent one of the first systematic national-scale deployments of this methodology.
For India’s river conservation programmes — including the Namami Gange Mission — actionable spatial data on plastic accumulation hotspots could transform intervention targeting and regulatory enforcement. The MoU thus represents not merely a technical agreement but a governance instrument, embedding space-derived intelligence into India’s water administration architecture at scale.
– Vijaya Yandrapalli
