- The Mahanadi Water Disputes Tribunal is a tribunal set up to resolve the inter-state water dispute between Odisha and Chhattisgarh over the sharing and use of the Mahanadi River waters.
- It was constituted under the Inter-State River Water Disputes Act, 1956, which itself is based on Article 262 of the Constitution.
- The dispute mainly arose because Odisha objected to Chhattisgarh’s construction of several barrages and water projects on the upstream part of the Mahanadi and its tributaries.
- Odisha argued that these upstream structures reduce water flow into Odisha, especially during the non-monsoon season. Chhattisgarh, on the other hand, argued that it has the right to use Mahanadi waters for irrigation, drinking water, industry and development.
- The dispute became serious because the Mahanadi is economically and ecologically important for both states.
Mahanadi River: Basic Facts
The Mahanadi is a major east-flowing peninsular river.
It rises in Chhattisgarh and flows through Odisha before draining into the Bay of Bengal.
Its basin covers parts of:
- Chhattisgarh
- Odisha
- Jharkhand
- Maharashtra
- Madhya Pradesh
The river is important for irrigation, drinking water, hydropower, industry, fisheries and flood control.
The Hirakud Dam in Odisha is one of the most important projects on the Mahanadi. It plays a major role in irrigation, power generation and flood moderation.
Constitution of the Tribunal
The Centre constituted the Mahanadi Water Disputes Tribunal in March 2018.
It was set up after Odisha approached the Supreme Court and demanded adjudication of the dispute.
The tribunal was initially chaired by retired Supreme Court judge Justice A.M. Khanwilkar. After his resignation in March 2024, the tribunal is currently headed by Supreme Court judge Justice Bela M. Trivedi, as reported in recent updates.
Core Issues
The main issues before the tribunal include:
- Sharing of Mahanadi waters between Odisha and Chhattisgarh
- Impact of upstream barrages built by Chhattisgarh
- Reduction of downstream flow into Odisha
- Non-monsoon water availability
- Industrial and irrigation water use
- Protection of Hirakud reservoir inflow
- Flood control and ecological flow
- Need for a joint water management mechanism
Odisha’s Concerns
Odisha argues that Chhattisgarh’s upstream projects affect the natural flow of the Mahanadi.
Its major concerns include reduced water availability for agriculture, drinking water, industry, fisheries and ecology in downstream Odisha.
Odisha has also argued that reduced non-monsoon flow may affect the functioning of the Hirakud Dam and the larger Mahanadi delta.
Chhattisgarh’s Position
Chhattisgarh argues that it is using water within its rights as an upstream state.
It claims that the projects are meant for irrigation, drinking water, industrial needs and regional development.
Chhattisgarh has also referred to earlier arrangements and argued that Odisha’s objections are exaggerated.
Legal Framework
The dispute is governed by:
- Article 262 of the Constitution
- Inter-State River Water Disputes Act, 1956
- Tribunal-based adjudication mechanism
- Principles of equitable water sharing
- Scientific assessment of river flows and usage
- Evidence-based evaluation of state claims
The tribunal has to examine hydrological data, water use, project details, seasonal flows, ecological needs and the rights of both states.
Present Status
The tribunal has received multiple extensions because the matter remains unresolved.
In April 2026, the Centre extended the tribunal’s tenure by nine months, up to 13 January 2027, or until submission of its report, whichever is earlier.
Recent reports also state that the tribunal criticised both Odisha and Chhattisgarh for repeated adjournments, observing that such delays hinder resolution of the long-running dispute.
Importance
The Mahanadi dispute is important because it reflects the larger problem of inter-state river management in India.
It shows that water disputes are not only legal disputes. They are also linked with federalism, agriculture, industry, ecology and regional politics.
The case is significant because it involves:
- Upstream-downstream conflict
- River basin management
- State development needs
- Ecological flow protection
- Tribunal delay
- Cooperative federalism
- Climate stress and seasonal water scarcity
Challenges
The tribunal process faces several challenges.
The dispute involves complex hydrological data, seasonal water variation and competing state claims.
Political pressure in both states makes compromise difficult.
Water availability is also affected by climate variability, erratic rainfall and rising demand from agriculture and industry.
Another major challenge is that tribunal awards often take years and implementation remains difficult even after a decision.
Conclusion
The Mahanadi Water Disputes Tribunal was created to resolve the Odisha-Chhattisgarh dispute over Mahanadi waters.
The dispute is mainly about upstream water use by Chhattisgarh and downstream water availability in Odisha.
Its continuing delay shows that India’s river water disputes cannot be solved only through tribunals. They require scientific data, cooperative federalism, basin-level planning and political willingness to share water fairly.
