Introduction to the Teesta Water Sharing Issue

The Teesta River originates in the Indian state of Sikkim and flows through West Bengal before entering Bangladesh, where it merges with the Brahmaputra. The river basin supports over 2.5 million people, primarily dependent on agriculture. Despite multiple rounds of negotiation since the 1990s, a formal bilateral water sharing agreement between India and Bangladesh on the Teesta remains unsigned. The issue gained prominence after the 1996 Ganges Water Treaty, which excluded Teesta, and has since been a contentious point in bilateral relations, particularly affecting West Bengal and northern Bangladesh.

The significance of the Teesta water dispute lies in its socio-economic and geopolitical impact. Bangladesh’s northern districts face irrigation deficits of up to 40% during dry seasons (FAO, 2023), directly affecting rice production and food security. For India, West Bengal allocates approximately ₹500 crore annually for irrigation infrastructure in the Teesta basin (State Budget 2023-24). The stalemate has broader implications for regional cooperation, water security, and climate resilience.

Legal and Institutional Framework Governing Teesta Water Sharing

India lacks a specific constitutional provision for transboundary water sharing; instead, the Inter-State River Water Disputes Act, 1956 (amended 2002) governs inter-state river disputes domestically. The Teesta negotiations fall under bilateral diplomacy, guided by the 1996 Ganges Water Treaty and ongoing talks between the Ministry of External Affairs (MEA), India, and the Bangladesh Water Development Board (BWDB). India is not a signatory to the UN Watercourses Convention (1997), but its principles influence normative frameworks.

• Ministry of External Affairs (MEA): Leads diplomatic negotiations with Bangladesh.
• Bangladesh Water Development Board (BWDB): Manages water resources and demands in Bangladesh.
• Central Water Commission (CWC), India: Provides technical assessments and data on river flows.
• Inter-State Council Secretariat: Facilitates inter-state water dispute resolution within India, relevant for West Bengal’s interests.
• International Centre for Integrated Mountain Development (ICIMOD): Offers regional hydrological data and climate impact projections.

Economic and Hydrological Dimensions of the Teesta River Basin

The Teesta basin underpins agriculture for millions in both countries. Bangladesh’s agriculture sector accounts for roughly 13% of its GDP (World Bank, 2023), with northern districts heavily reliant on Teesta water for irrigation. Approximately 1.2 million hectares in Bangladesh lack adequate irrigation due to the absence of a formal water sharing agreement.

India’s West Bengal uses about 1,200 cubic feet per second (cusecs) of Teesta water during dry seasons, while Bangladesh demands 42% of the river’s flow (MEA, 2023). The 1996 Ganges Treaty allocates 40% of dry season flow to Bangladesh for the Ganges but does not cover Teesta, creating a legal and operational vacuum. Climate change threatens to reduce Teesta’s flow by 10-15% by 2050 (ICIMOD, 2023), exacerbating water scarcity risks.

• Teesta contributes about 70% of surface water flow in northern Bangladesh (BWDB, 2022).
• Bangladesh’s northern districts face irrigation deficits up to 40% during dry seasons (FAO, 2023).
• India’s West Bengal spends ₹500 crore annually on irrigation infrastructure in the Teesta basin (State Budget 2023-24).
• Bilateral trade between India and Bangladesh reached $13.9 billion in 2022-23, growing 20% over five years (Ministry of Commerce, India).

Comparative Analysis: Lessons from the India-Nepal Mahakali Treaty

The India-Nepal Mahakali Treaty (1996) offers a functional precedent for transboundary water sharing. It includes joint infrastructure projects, equitable water allocation, and a dispute resolution mechanism through a Permanent Mahakali Commission. This institutionalized framework has improved irrigation for over 150,000 hectares in Nepal and enhanced bilateral relations.

In contrast, the Teesta negotiations lack a binding agreement or joint institutional mechanism, resulting in unilateral water use and political deadlock. The Mahakali model’s emphasis on transparency, data sharing, and climate resilience planning highlights gaps in the India-Bangladesh approach.

Critical Gaps and Challenges in the Teesta Water Deal

The absence of a legally binding, transparent water sharing agreement fosters unilateral exploitation and political impasse. Lack of integrated basin-wide hydrological data sharing impedes joint management. Climate change projections of reduced river flow intensify the urgency for adaptive water governance. Domestic political considerations in West Bengal and Bangladesh complicate consensus. Unlike the Mahakali Treaty, no permanent joint commission exists to oversee implementation or resolve disputes.

• Political sensitivity in West Bengal inhibits India’s central government from finalizing the deal.
• Absence of shared real-time hydrological data reduces trust.
• Climate change impacts remain unaddressed in current negotiations.
• Legal vacuum due to no formal treaty or enforcement mechanism.

Significance and Way Forward

Reconsidering the Teesta water deal is imperative under evolving geopolitical and climatic conditions. A binding bilateral treaty with clear water allocation, modeled on the Mahakali framework, can enhance regional water security and socio-economic development. Establishing a joint commission for data sharing, dispute resolution, and climate adaptation planning is essential. Strengthening bilateral cooperation will also support India-Bangladesh trade growth and regional stability.

• Negotiate a legally binding water sharing agreement with specified dry season allocations.
• Establish a joint Teesta River Commission for technical and diplomatic coordination.
• Integrate climate change projections into water resource planning.
• Promote transparency through shared hydrological data and joint infrastructure projects.
• Leverage enhanced water cooperation to boost bilateral trade and regional development.

Mains Question

Critically analyse the challenges and prospects of the Teesta water sharing agreement between India and Bangladesh in the context of regional cooperation and climate change. (250 words)