Inter-Basin Water Transfer and Resource Management

Inter-basin water transfer (IBWT) schemes have emerged as a pivotal response to the growing mismatch between water availability and demand across diverse regions. By diverting flows from water-rich catchments to basins facing scarcity, these engineered systems can stabilise urban supplies, sustain agricultural production and support industrial growth. However, such interventions recalibrate hydrological connectivity, potentially altering downstream ecosystems, displacing shortages rather than resolving them and creating complex socio-ecological trade-offs. Contemporary research emphasises the need for integrated management frameworks that couple hydrological models with energy, food and socio-economic dimensions. Advances in remote sensing, data-driven inventories and conceptual modelling now enable more robust assessments of storage dynamics, energy co-benefits and ecological impacts. As global climate change exacerbates spatial and temporal variability, sustainable IBWT practice demands adaptive reservoir operation, rigorous environmental safeguards and equitable benefit-sharing mechanisms.

Research from Nature Portfolio

A study of the South-to-North Water Diversion Project quantified how transferred surface water can supplant deep groundwater extraction in the North China Plain, thereby reducing energy consumption by nearly one billion kilowatt-hours and cutting associated greenhouse-gas emissions. This work highlights how surface-water transfers can form a cornerstone of groundwater-exploitation reduction programmes, delivering both resource security and energy co-benefits.

Research on the Danjiangkou Reservoir applied moderate-resolution satellite observations to assess seasonal and interannual variations in storage volume. By mapping inundation patterns over two decades, the study revealed critical timing of supply deficits in late spring and informed adjustments to reservoir release schedules. These insights support improved guarantee rates for water delivery and more resilient reservoir management under variable climatic conditions.

Inter-Basin Water Transfer and Resource Management publication trend

The graph below shows the total number of articles in inter-basin water transfer and resource management across all publications each year (not limited to Nature Index journals).

Technical terms

Inter-Basin Water Transfer (IBWT): engineered conveyance of water between separate river basins to address spatial and temporal shortages.

Hydrological Connectivity: the degree to which water flows link different aquatic habitats, influencing ecological processes and water quality.

Water–Energy–Food (WEF) Nexus: an analytical framework examining interdependencies and trade-offs among water, energy and food systems.

Groundwater-Exploitation Reduction Programme: policy strategy that replaces deep aquifer pumping with surface-water transfers to mitigate over-extraction and reduce energy use.

Socio-Ecological Systems (SES): integrated conceptualisation of human communities and ecosystems as co-evolving, interdependent networks.

References

1. Enhancing the engineering design of diversion routes to safeguard water quality: New insights from a carbon cycling perspective. The Innovation Geoscience (2024).
2. Interbasin water transfers in the United States and Canada. Scientific Data (2023).
3. Energy Reduction Effect of the South-to-North Water Diversion Project in China. Scientific Reports (2017).
4. The Dynamic Changes in the Storage of the Danjiangkou Reservoir and the Influence of the South-North Water Transfer Project. Scientific Reports (2018).
5. Influence of basin characteristics on the effectiveness and downstream reach of interbasin water transfers: displacing a problem. Environmental Research Letters (2015).
6. Interbasin water transfer in a changing world: A new conceptual model. Progress in Physical Geography Earth and Environment (2021).