How Much Water Does Pakistan Receive Under the Indus
Waters Treaty?
Introduction
The Indus Waters Treaty (IWT) of 1960 is one of the most consequential water-distribution pacts in South Asia. Between India and Pakistan, with the World Bank as a signatory, it created a legal framework for dividing the waters of the six rivers in the Indus River System. ([World Bank][1]). A frequently asked question about the IWT concerns Pakistan's share of water. How much water does Pakistan get under the Indus Waters Treaty?
The short answer is that the rivers allocated to Pakistan, for use according to the IWT, carry roughly 135 million acre-feet (MAF) on average per year. This comprises approximately 80 percent of the water in the six rivers covered by the treaty. The remaining 33 MAF are carried by the rivers allocated primarily to India. ([Press Information Bureau][2])
However, it is crucial to understand that the IWT does not give Pakistan a guaranteed annual water allocation. The treaty stipulates rights over certain rivers and regulates their use. This is a vital distinction, which explains why the Indus Waters Treaty is not as simple as an "80 percent water for Pakistan, 20 percent for India" agreement.
The Six Rivers of the Indus Waters Treaty
The Indus River System consists of six rivers covered by the IWT. They are divided into two groups: the Eastern Rivers and the Western Rivers. The Eastern Rivers are the Ravi, Beas and Sutlej, which are allocated to India for her "unrestricted use, subject to specific provisions." ([treaties.un.org][3])
The Western Rivers are the Indus, Jhelum and Chenab, which are allocated to Pakistan for "unrestricted use, subject to specific provisions." Under Article III, India is entitled to "domestic use, non-consumptive use, limited agricultural use and power generation potential" of the Western Rivers. ([mea.gov.in][4])
This division underlies the basic principles of the IWT. It stipulates rights over specific rivers, not water volumes. The rivers were divided according to their approximate contribution to the water resources of the region. The Western Rivers carry roughly 135 MAF of water on average per year, while the Eastern Rivers carry 33 MAF. ([Press Information Bureau][2])
Pakistan's Approximate 135 MAF Share
Rivers Average annual flow Treaty allocation
The frequently cited "135 MAF for Pakistan and 33 MAF for India" figure means that roughly four-fifths of the water in the six main rivers covered by the IWT was allocated to Pakistan and one-fifth to India. ([Press Information Bureau][2])
The exact number may vary depending on the source and definition of basin flows. For this reason, "about 80 percent" is a more accurate description of Pakistan's share than "80 percent." The 80 percent figure roughly corresponds to the average flow of the Western Rivers. It should not be interpreted as Pakistan's guaranteed annual water share, which is a common misconception. The IWT makes no specific annual allocation of water to Pakistan. ([mea.gov.in][4])
Does Pakistan Receive Exactly 135 MAF Every Year?
No. This is one of the most important nuances regarding the IWT. The figure of 135 MAF represents an approximate average annual flow, not a guaranteed volume of water allocated to Pakistan every year. The actual flow of the rivers can vary significantly from year to year, depending on precipitation, snowmelt, glacier melt, aridity, flooding and other factors. ([Press Information Bureau][2])
Therefore, Pakistan's annual river inflows can be significantly higher or lower than 135 MAF. The IWT primarily stipulates rights over the Western Rivers and regulates the use of water from them. For example, Article III requires India to "allow the waters of the Western Rivers to flow" to Pakistan, subject to specific provisions. ([mea.gov.in][4])
This is a critical difference between an "80 percent water for Pakistan" theory and the actual IWT. The latter does not guarantee an annual water allocation to Pakistan. It stipulates rights over specific rivers with specific uses, which are subject to regulation and restrictions. ([World Bank][1])
What Does "Unrestricted Use" Mean for Pakistan?
The IWT gives Pakistan the right to the waters of the Western Rivers for "unrestricted use, subject to specific provisions." India is obliged to "allow the waters of the Western Rivers to flow" to Pakistan, subject to specific provisions. ([mea.gov.in][4])
For Pakistan, this means that the waters of the Indus, Jhelum and Chenab can be used for agricultural, domestic, hydropower, commercial and other purposes. This is a crucial provision, which underlines the economic significance of the Western Rivers for Pakistan. Their allocation to Pakistan under the IWT is of paramount importance to the country. ([mea.gov.in][4])
In particular, Pakistan's agricultural sector, which relies heavily on irrigation, benefits from the IWT. The Indus River System, and the Western Rivers in particular, plays a major role in Pakistan's irrigation system. This has a direct impact on the country's food supply, economy and overall water security. ([Ministère des Ressources en Eau][5])
Can India Use Water from the Rivers Allocated to Pakistan?
Yes, but the IWT allows only specific uses of the Western Rivers by India. Under the treaty, India is entitled to "domestic use, non-consumptive use, limited agricultural use and power generation potential" of the rivers allocated to Pakistan. ([mea.gov.in][4])
For example, the IWT stipulates technical and operational guidelines for hydropower projects on the Western Rivers. These guidelines are of particular interest to India, which has initiated several controversial projects on the Indus River System. ([mea.gov.in][4])
In addition, the IWT regulates storage on the Western Rivers. According to the Ministry of Water Resources of Pakistan, the treaty allows India to use "specified storage capacity" on the rivers allocated to Pakistan, subject to specific limitations and conditions. ([Ministère des Ressources en Eau][5])
Therefore, Pakistan's approximately 135 MAF share should not be interpreted as an absolute figure. The IWT gives India specific rights over the Western Rivers. In practice, this means that India can use part of the waters of the Indus, Jhelum and Chenab for particular purposes. ([Press Information Bureau][2])
Why Does Pakistan Depend So Heavily on the Western Rivers?
Pakistan's heavy reliance on the Western Rivers is explained by their significance for the Indus River System. The Indus River System is the core of Pakistan's irrigation system. The waters of the Indus, Jhelum and Chenab are essential for Pakistan's agriculture. ([Ministère des Ressources en Eau][5])
Agriculture is the backbone of Pakistan's economy and is highly dependent on freshwater. The Indus River System provides the country with the majority of its freshwater resources. These are used for irrigation, hydropower, domestic use, groundwater recharge, maintaining wetlands and other purposes. ([Ministère des Ressources en Eau][5])
The Indus, Jhelum and Chenab are particularly important for Pakistan because they provide it with most of the water in the Indus River System. This is why Pakistan values its rights to the Western Rivers so deeply. The IWT has a considerable impact on the country's water security and economy. ([mea.gov.in][4])
The Indus Waters Treaty Is Not Simply an "80:20 Water-Sharing Agreement"
The "80:20 water-sharing agreement" theory is misleading in more ways than one. It is a simplistic view of the IWT, which allocates specific rivers to Pakistan and India, not water volumes. The rivers were divided according to their approximate contribution to the water resources of the region. The Western Rivers carry roughly 135 MAF of water on average per year, while the Eastern Rivers carry 33 MAF. ([Press Information Bureau][2])
Therefore, the IWT does not stipulate an 80 percent water share for Pakistan and a 20 percent water share for India. It stipulates rights over specific rivers. In practice, this means that Pakistan has access to approximately 80 percent of all water resources covered by the IWT, and India has access to approximately 20 percent. ([World Bank][1])
This nuance is of paramount importance to understanding the IWT. It explains why the Indus Waters Treaty is not as simple as an "80:20 agreement." The IWT is more than just a water-sharing pact between India and Pakistan. It is a treaty that stipulates rights over specific rivers and regulates their use. ([mea.gov.in][4])
What About the Ravi and Sutlej Flows Entering Pakistan?
The IWT also covers water originating from sources other than the Eastern Rivers and flowing into the Ravi or Sutlej within Pakistan. Under Article II, Pakistan has "unrestricted use" of such water resources. ([treaties.un.org][3])
This is yet another example of the complexity of the IWT. It regulates not only the division of the waters of the six rivers but also their use for irrigation, hydropower, storage and other purposes. ([treaties.un.org][3])
Why the 135 MAF Figure Matters Today
The approximately 135 MAF figure is important because it demonstrates the scale of Pakistan's dependence on the Western Rivers. They provide the country with most of the water in the Indus River System. This has a major impact on Pakistan's water security. ([mea.gov.in][4])
However, water security is not the same as having access to a large river system. Pakistan has access to the Indus, Jhelum and Chenab but is still vulnerable to freshwater shortages. ([Ministère des Ressources en Eau][5])
There are several reasons for this, including seasonal aridity, inefficient irrigation systems, depletion of groundwater resources, a growing population, climate change, water pollution, siltation of the rivers and dams, and other factors. ([Ministère des Ressources en Eau][5])
Climate change, in particular, has the potential to disrupt Pakistan's water security. It can lead to changes in the timing of snow and glacier melt, which can affect the seasonal distribution of river flows. ([Ministère des Ressources en Eau][5])
Therefore, Pakistan's water security depends not only on the IWT but also on its ability to store and distribute water efficiently. ([mea.gov.in][4])
The Treaty and Current Water Disputes
The IWT has been a source of controversy between Pakistan and India for decades. It has withstood political, economic and military challenges. The World Bank serves as a mediator between the two countries. Under the IWT, the Permanent Indus Commission was established, which serves as a forum for discussion, negotiation and information exchange between India and Pakistan. ([World Bank][1])
However, disagreements flare up periodically, particularly over the use of the rivers for hydropower. In August 2025, Pakistan's Ministry of Foreign Affairs noted that a Court of Arbitration had ruled that India "must allow the waters of the Western Rivers to flow for the unrestricted use of Pakistan, while applying the specific exceptions and requirements set out in the Indus Waters Treaty to run-of-river hydropower projects." ([Ministère des Affaires Étrangères][6])
This illustrates the complexity of the situation, which goes beyond the simple division of water resources between Pakistan and India. In reality, disputes erupt over technical details, such as the specifications of run-of-river hydropower projects. ([World Bank][1])
What Is the Bottom Line?
Under the IWT, Pakistan has been granted the right to use the waters of the Indus, Jhelum and Chenab for "unrestricted use, subject to specific provisions." The rivers have an average annual flow of approximately 135 MAF, which comprises roughly 80 percent of all water resources covered by the IWT. India has been granted the right to use the waters of the Ravi, Beas and Sutlej, which have an average annual flow of 33 MAF. ([Press Information Bureau][2])
However, Pakistan does not have a guaranteed 135 MAF water share under the IWT. The figure of 135 MAF represents an approximate average annual flow of the rivers allocated to Pakistan. The actual river flows can vary significantly from year to year. ([mea.gov.in][4])
The IWT plays a major role in Pakistan's water security. The Indus, Jhelum and Chenab are essential to Pakistan's irrigation system, agriculture, hydropower and economy. ([mea.gov.in][4])
As climate change and other factors threaten Pakistan's water security, its ability to store and distribute water efficiently will be of paramount importance. ([mea.gov.in][4])
Frequently Asked Questions
How much water does Pakistan get under the Indus Waters Treaty?
Pakistan has been granted the right to use the waters of the Indus, Jhelum and Chenab for "unrestricted use, subject to specific provisions." The rivers have an average annual flow of approximately 135 MAF. ([mea.gov.in][4])
What percentage of Indus River water does Pakistan receive?
Pakistan's share of water under the IWT is approximately 80 percent. This figure roughly corresponds to the average flow of the Western Rivers, which are allocated to Pakistan. The Eastern Rivers, which are allocated to India, have an average annual flow of 33 MAF. ([Press Information Bureau][2])
Which rivers were given to Pakistan under the Indus Waters Treaty?
The Indus, Jhelum and Chenab were given to Pakistan for "unrestricted use, subject to specific provisions." ([mea.gov.in][4])
Which rivers were allocated to India?
The Ravi, Beas and Sutlej were allocated to India for "unrestricted use, subject to specific provisions." ([treaties.un.org][3])
Does Pakistan receive exactly 135 MAF every year?
No. The figure of 135 MAF represents an approximate average annual flow of the rivers allocated to Pakistan. The actual river flows can vary significantly from year to year. ([mea.gov.in][4])
Can India use the Western Rivers?
Yes, but the IWT stipulates specific uses of the Western Rivers by India. India is entitled to "domestic use, non-consumptive use, limited agricultural use and power generation potential" of the rivers allocated to Pakistan. ([mea.gov.in][4])
Does the Indus Waters Treaty divide water equally between India and Pakistan?
No. The IWT stipulates rights over specific rivers, not water volumes. The rivers were divided according to their approximate contribution to the water resources of the region. The Western Rivers carry roughly 135 MAF of water on average per year, while the Eastern Rivers carry 33 MAF. ([Press Information Bureau][2])
Why is the Indus Waters Treaty important for Pakistan?
The IWT is important for Pakistan because it stipulates rights over the Indus, Jhelum and Chenab, which are essential to Pakistan's irrigation system. They provide Pakistan with most of the water in the Indus River System. ([mea.gov.in][4])
Does the treaty guarantee Pakistan's water security?
Not by itself. The IWT stipulates rights over specific rivers, but Pakistan's water security depends on its ability to store and distribute water efficiently. ([mea.gov.in][4])
Who manages the treaty?
The Permanent Indus Commission serves as a forum for discussion, negotiation and information exchange between India and Pakistan. It was established under the IWT. ([World Bank][1])
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://www.pib.gov.in/Pressreleaseshare.aspx?PRID=1565906&lang=2®=48&utm_source=chatgpt.com "Indus Waters Treaty 1960 : Present Status of Development in India"
[3]: https://treaties.un.org/doc/Publication/UNTS/Volume%20419/v419.pdf?utm_source=chatgpt.com "Treaty Series"
[4]: https://www.mea.gov.in/bilateral-documents.htm?dtl%2F6439%2FIndus=&trk=public_post_comment-text&utm_source=chatgpt.com "Indus Waters Treaty"
[5]:https://www.mowr.gov.pk/Detail/MDQ1NDQ1YTQtMzQ1MC00YTU5LTljMWEtMzliZTVhM2QxMjhl?utm_source=chatgpt.com "MINISTRY OF WATER RESOURCES"
[6]: https://mofa.gov.pk/press-releases/transcript-of-the-press-briefing-by-the-spokesperson-on-friday-22th-august-202?utm_source=chatgpt.com "Transcript of the Weekly Media Briefing by the Spokesperson on Friday, 22 August 2025"
0 Comments