Hydropolitics in South Asia: Water, Power and
the Future of the Indus River System
Introduction
In South Asia, rivers are linked with the region’s food, power, livelihoods, politics and security. The rivers of this region are international, and their waters define the geopolitical relationships between nations. This relationship between water and politics is called hydropolitics and occurs when a river’s catchment area spans more than one nation or region with differing priorities and needs.
The Indus River System represents one such river basin. Its six rivers - Indus, Jhelum, Chenab, Ravi, Beas, and Sutlej - have sustained Pakistan’s agriculture and are an asset to India. The Indus Waters Treaty (IWT) signed in 1960 serves as a framework for water sharing and cooperation between the two countries.
The World Bank notes that the IWT “established a framework for the allocation of waters and the rules for the apportionment of the waters of the six rivers as well as for mutual coordination and cooperation between the countries concerned through the Permanent Indus Commission.” ([World Bank][1])
However, this relationship, which has been defined by a delicate balance of power between Pakistan and India, is becoming increasingly fraught. The issue is no longer only about the division of waters. It concerns the power dynamics of information exchange, the technical operations of infrastructure, and the ability of states to continue cooperating amid deteriorating geopolitical relations.
What Is Hydropolitics?
Hydropolitics concerns the relationship between water and power. It focuses on negotiations, cooperation, and competition over water flow, dam sites, water storage, agricultural use, hydropower generation, flood protection, and water-quality monitoring. It also considers the geopolitical aspects of sovereignty, security, and diplomacy in international river basins. Hydropolitics is not necessarily about confrontation - it can be about cooperation as well.
In fact, diplomatic agreements relating to the sharing of water-flow data, joint operations to manage peak flows, and the establishment of permanent commissions to handle river-related issues all fall under hydropolitics. The problem emerges when political disagreements begin to interfere with the management of shared waters.
After all, a river flows regardless of political circumstances – it is up to the states to coordinate their activities in accordance with the river’s rhythms. As such, hydrological data can become a strategic and geopolitical asset.
Hydropolitics in South Asia: Interrelated Rivers
South Asia is home to some of the world’s largest international river basins, including the Indus, Ganges, Brahmaputra, and Meghna. All of them are vital to regional agriculture, energy, urban centers, and ecosystems. The geopolitics of South Asia’s water resources are closely linked to the hydrology of river basins and the international dynamics of water use. The political geography of South Asia is not necessarily congruent with the hydrological geography of the region.
A country can simultaneously be an upstream state for one river and a downstream state for another. India holds this dual position in relation to the Indus and Ganges basins, while China is an upstream state for all of South Asia’s international rivers. The Brahmaputra River is an example of the complex geopolitical interrelations that can develop in river basins with more than one country.
Research on the geopolitics of the Brahmaputra highlights the challenges of reconciling the development needs of downstream countries with the interests of upstream countries while navigating the intricacies of regional politics. ([Portail de recherche WUR][2])
As such, South Asia’s water politics involve not only rivers but also the interrelations between states within a river basin and the associated geopolitical, security, and developmental concerns.
The Indus River System and Hydropolitics
The Indus River System is one of South Asia’s most strategically important river basins. Pakistan’s reliance on the Indus for agricultural production makes it the region’s most important river in terms of water security. The IWT signed in 1960 governs the sharing of water between India and Pakistan. It designates the Indus, Jhelum, and Chenab as Western Rivers and the Ravi, Beas, and Sutlej as Eastern Rivers and gives the former primarily to Pakistan and the latter primarily to India, subject to specifications and limitations set out in the treaty. ([World Bank][1])
Beyond the treaty’s division of the rivers, hydropolitics plays a role in ensuring that states cooperate effectively. For example, the IWT created several institutional mechanisms for water management, including the Permanent Indus Commission, so that its signatories could engage in technical negotiations over the river and its waters. This type of technical cooperation is an integral part of successful water management.
Hydropolitics always involves not just political decisions but also scientific calculations. A river’s discharge capacity must be regularly monitored so that each riparian state knows how much water to expect.
Why the Indus Waters Treaty Matters
The IWT is a treaty of great geopolitical significance. It has enabled India and Pakistan to maintain at least some level of stability in their bilateral relations, including after major geopolitical crises, such as the 1971 Bangladesh Liberation War. Part of this success is explained by the fact that the IWT contains a wide range of technical procedures necessary for effective water management.
The treaty’s sixth article addresses the exchange of hydrological data between the two countries, while its eighth article stipulates the creation of the Permanent Indus Commission, among other things. Additionally, the IWT includes a number of provisions that cover potential future water-management agreements and conflict-resolution procedures regarding the disputed river system. ([World Bank][3])
In other words, managing the waters of the Indus River basin always comes down to information. A river cannot be managed in a manner that satisfies all of a basin’s countries if these countries do not share accurate information about the river’s features and behavior.
Hydrological Data Sharing and Water Diplomacy
When people talk about the Indus Waters Treaty, they often discuss the rivers, their division, and the dams built by either country. The topic of data sharing rarely comes up, despite the fact that it is one of the most crucial issues in water diplomacy.
The IWT stipulates that India and Pakistan must share hydrological data, including discharge information, with one another. It does the same for reservoirs and canal operations. In fact, historical World Bank documents provide insight into the IWT’s water-sharing procedures and data-exchange mechanisms. ([World Bank][4]).
This information is necessary for the proper management of watersheds. For example, if one country anticipates a large discharge from upstream, it must operate its reservoirs and levy structures accordingly so that downstream countries are not caught off guard. Conversely, if a country fails to provide precise discharge figures, its downstream neighbor may wrongly assume that there is a surplus of water for agricultural use. Data transparency plays a major role in water politics. It is often the key to preventing misunderstandings and mistrust between riparian states.
Indus Waters Treaty Abeyance
The phrase “Indus Waters Treaty abeyance” has entered public discourse in 2025. In early April 2025, India announced that it had placed the IWT on abeyance after a period of especially tense bilateral relations with Pakistan. This development represents a major shift in India-Pakistan hydropolitics. It has made water a publicly visible geopolitical issue and raised many questions about the future of the Indus River System.
The Indus Waters Treaty abeyance should not be conflated with treaty termination. The IWT’s final clauses concern termination procedures directly and stipulate that the treaty “shall remain in force until terminated by a duly ratified treaty between the Governments of India and Pakistan.” ([Ministère des Affaires Étrangères][5])
In other words, when experts write about “Indus Waters Treaty abeyance,” they are referring to a situation in which the treaty’s enforcement was suspended, rather than a situation in which the treaty was formally terminated as a legal document. This nuance is crucial to understanding the Indus Waters Treaty abeyance and all of the implications for South Asia’s geopolitics, water management, and transboundary cooperation.
Suspension of the Indus Waters Treaty and Water
Data Exchange
One of the main concerns with the Indus Waters Treaty abeyance is information exchange. When the procedures for water management between upstream and downstream countries cease to function properly, it also has an impact on transparency and trust. This is especially true for sharing hydrological data with downstream countries.
For example, if a country’s reservoirs and levees are unable to release the observed discharge, downstream countries must be aware of the situation so that they can update their agricultural and municipal water use plans.
A suspension of the Indus Waters Treaty creates a second-level hydropolitical problem: a situation in which countries have less confidence in information pertaining to the river than before. A similar point was recently made by researchers analyzing the geopolitical implications of the Indus and Ganges-Brahmaputra river systems for South Asia’s hydropolitics. ([EU Journal][6])
Water As Strategic Information
Modern hydropolitics rarely focuses solely on a river as a physical entity. More and more often, a river’s information functions - the ways in which it provides information to people and the ways in which people manage that information - take center stage.
Real-time or near-real-time knowledge of a river’s power potential enables its riparian states to plan their electricity generation, seasonal flood regulations, and agricultural irrigation. In other words, water data translates into strategic advantages over a region. Water security has traditionally been defined as the availability of water resources.
The modern equivalent is strategic data transparency about water availability: a river’s flow rate and, more specifically, the infrastructure characteristics influencing it. The latter consideration is especially relevant to South Asia’s Indus River basin, where hydropolitical tensions between India and Pakistan are exacerbated by climate change.
Dams, Hydropower and Hydropolitical Power
Large-scale dams and hydropower facilities have always been an integral part of the hydropolitical discourse surrounding the Indus River. For upstream countries, they represent a source of power, irrigation potential, and flood protection. For downstream countries, they are a factor of strategic concern. Of course, not every hydropower facility is designed to serve as a strategic asset.
Many dams are built for the specific purpose of electricity generation, and their construction adheres to engineering standards without considering strategic military applications. Nevertheless, the very act of constructing a dam on a disputed river can raise hydropolitical questions due to the strategic advantages that large-scale water storage facilities grant to upstream countries. This is why engineering, law, diplomacy, and military affairs are inextricably linked to transboundary river management.
Hydropolitics Outside the Indus Basin
The Indus River basin is not the only transboundary river basin in South Asia. The countries of this region share several other watersheds, including the Ganges, Brahmaputra, and Meghna. The Indus River basin, in turn, has its tributaries, the most important of which are the Jhelum and Chenab.
The Ganges River basin serves as an example of the complex hydropolitical interrelations that can develop within a single river watershed. The Ganges River flows through Tibet, Nepal, India, and Bangladesh, thereby connecting many of South Asia’s regional players. The Brahmaputra River basin is even more interesting from a geopolitical perspective due to China’s involvement.
Academic research on South Asia’s international river basins suggests that the region’s hydropolitics involve intertwined elements of geopolitics, national security, and economic development. ([Portail de recherche WUR][2])
The Ganges River basin, meanwhile, presents yet another set of challenges for regional water politics. Overall, South Asia’s hydropolitics extend far beyond the Indus River System and take place within an intricate geopolitical context.
Climate Change and Hydropolitics
Finally, the impact of climate change on South Asia’s river systems must be taken into account. The Indus River basin is particularly vulnerable to rising temperatures and changing patterns of snowfall and rainfall. Meanwhile, the growing population, urbanization, agricultural expansion, and energy needs of South Asia’s inhabitants add to the pressure on these rivers.
The combination of these factors may lead to future disagreements over water use that extend beyond the technical aspects of water management. Water disputes will no longer be confined to allocating shares of the river’s flow or constructing hydropower facilities.
A 2026 review of the IWT highlights several challenges for transboundary water governance in South Asia and beyond and emphasizes the importance of adapting to climate change. ([ScienceDirect][7])
From Water Conflict to Water Cooperation
Hydropolitics often involves international disputes, but these are only part of the story. Water provides a unique opportunity for states to cooperate on specific issues without embroiling themselves in broader geopolitical rivalries.
For example, India and Pakistan have much to gain from working together on flood prediction, climate modeling, glacier surveillance, sediment removal, and ecological conservation. Their shared basin means that they must account for one another’s activities and anticipate potential problems. This is the paradox of water: while it can fuel discord and rivalry, it also promotes compromise and cooperation. The challenge is to separate the two and, where possible, prioritize technical solutions over political ones.
The technical side of transboundary water management can serve as a framework for cooperation even in the midst of geopolitical tensions. In the future, water diplomacy can be based on a set of principles, such as the regular exchange of hydrological data, independent monitoring, joint flood predictions, climate risk assessments, and transparency concerning large-scale water infrastructure. These principles will not eliminate political disagreements, but they should reduce the likelihood that every hydrological situation will trigger a diplomatic crisis.
The Future of Hydropolitics in South Asia
Looking ahead, it is clear that South Asia’s hydropolitics will be determined by water, infrastructure, and information. Water scarcity will drive states to invest more in artificial reservoirs and infrastructure. At the same time, these investments will generate new sources of political tension. The technical side of water management will grow in importance as an arena for international negotiations and agreements.
The Indus Waters Treaty provides an excellent illustration of these dynamics. It shows how a treaty can help states navigate complex water-related issues and facilitate communication between riparian countries, even when their broader political ties are tenuous. The lessons from the IWT can inspire future water policies that contribute to regional stability and sustainability.
Conclusion
Hydropolitics in South Asia is no longer about dividing rivers. It is about power, infrastructure, information, and uncertainty. The Indus River System plays a major role in this context due to Pakistan’s reliance on the Indus for its agricultural needs. The Indus Waters Treaty demonstrates how technical aspects of river management can shape hydropolitics.
For decades, the IWT has served as an institutional guarantee of technical cooperation between Pakistan and India despite their often turbulent political relations. This technical cooperation has included the exchange of information on the river’s hydrological features, which has formed the basis for water management in the Indus River basin. ([World Bank][1])
As such, the Indus Waters Treaty abeyance has raised serious questions about not only the water management procedures of the Indus River basin but also the role of technical knowledge in water politics. In short, the phrase “Indus Waters Treaty abeyance” encompasses a much larger issue than the suspension of the IWT.
Hydropolitics will inevitably involve disagreements, misunderstandings, and even outright confrontations. However, it should also provide opportunities for compromise and international cooperation. It is the responsibility of states to ensure that water disputes do not overshadow technical collaboration. After all, rivers do not recognize political borders, but water governance certainly does.
FAQ
1. What is hydropolitics?
Hydropolitics is the study of water resources and their relationship to politics, diplomacy, national security, and international relations. It focuses on the negotiations and cooperation between states over water-related issues such as water use, dams, hydropower, irrigation, flood control, and water quality.
2. What is the Indus River System?
The Indus River System consists of the Indus River and its major tributaries: the Jhelum, Chenab, Ravi, Beas, and Sutlejs. These rivers are the basis for much of Pakistan’s agriculture and an important asset to India.
3. What is the Indus Waters Treaty?
The Indus Waters Treaty is the 1960 water-sharing agreement between India and Pakistan concerning the waters of the Indus River System. It designates the Eastern Rivers for India and the Western Rivers for Pakistan while stipulating a number of rules and procedures for water use and technical cooperation between the two countries. ([World Bank][1])
4. What does Indus Waters Treaty abeyance mean?
The abeyance of the Indus Waters Treaty refers to India’s announcement in 2025 that the treaty was placed on hold due to Pakistan’s alleged violations of its terms. This is not to be confused with the formal termination of a treaty. The procedures for treaty termination are explicitly outlined in the final clauses of the IWT and concern the ratification of a new treaty between India and Pakistan. ([Ministère des Affaires Étrangères][5])
5. Why is hydrological data sharing important?
Hydrological data sharing helps predict river flows, plan agricultural activities, monitor reservoir levels, and generally manage a river basin. It is especially useful in cases of extreme weather events, such as floods, when reservoirs need to be regulated in a timely manner. ([World Bank][4])
6. Can water become a geopolitical weapon?
Water can become a geopolitical weapon when the conditions for its use are dictated by specific strategic goals. It is also important to note that water is typically weaponized when it is controlled by someone who possesses an advantage over others. While a dam provides a strategic advantage to an upstream country, it does not necessarily mean that it has been weaponized.
7. Is hydropolitics only about conflict?
No, hydropolitics encompasses both conflict and cooperation. Examples of hydropolitical cooperation include joint river monitoring, exchange of hydrological data, flood prediction, water treaties, etc.
8. Why is hydropolitics becoming more important in South Asia?
Demographic, energy, urban, agricultural, climatic, and geopolitical trends are shaping South Asia’s future and presenting unprecedented challenges for freshwater resources and hydropolitics. The importance of water is amplified by the fact that rivers serve as natural borders and that many South Asian countries share river basins.
9. What is the future of Indus basin hydropolitics?
The future of Indus basin hydropolitics will depend on whether India and Pakistan can devise a functional water policy that will allow them to maintain stable relations while addressing their strategic and tactical disagreements. Climate change will also play a role in the future of Indus basin hydropolitics by influencing freshwater availability and making water management an even more important issue.
References
[1]:https://www.worldbank.org/en/region/sar/brief/fact-sheet-the-indus-waters-treaty-1960-and-the-world-bank?utm_source=chatgpt.com “Fact Sheet: The Indus Waters Treaty 1960 and the Role of the World Bank”
[2]:https://research.wur.nl/en/publications/hydropolitics-intertwined-with-geopolitics-in-the-brahmaputra-riv?utm_source=chatgpt.com “Hydropolitics intertwined with geopolitics in the Brahmaputra River Basin – Wageningen University & Research”
[3]:https://documents1.worldbank.org/curated/en/957671468253830473/pdf/E14650vol-02.pdf?utm_source=chatgpt.com “World Bank Document”
[4]:https://documents1.worldbank.org/curated/en/249581468325224527/pdf/multi0page.pdf?utm_source=chatgpt.com “World Bank Document”
[5]:https://www.mea.gov.in/bilateral- documents.htmdtl/6439/Indus=&outputType=chromeless&utm_source=chatgpt.com “Indus Waters Treaty”
[6]:https://eujournal.org/index.php/esj/article/view/20518?utm_source=chatgpt.com “Navigating Strategic Waters: Hydropolitical Disputes and Pathways to Peace in South Asia’s Indus and GangesBrahmaputra River Basins | European Scientific Journal, ESJ”
[7]:https://www.sciencedirect.com/science/article/pii/S2468312426000040?utm_source=chatgpt.com “Past, present and future of the indus water treaty: implications for transboundary water governance challenges and modernization prospects – ScienceDirect”
0 Comments