On March 28, 2025, the Cabinet Committee on Economic Affairs (CCEA) formally approved the Kosi Mechi River Intra‑State Link Project, under PMKSY‑AIBP, costing ₹6,282.32 crore, with ₹3,652.56 crore as central assistance Bihar’s cabinet further endorsed it on June 24, 2025, noting its extensive scope: irrigation and flood-related benefits for over 2.14 lakh hectares in Araria, Purnia, Kishanganj, Katihar and Supaul districts
What is the Kosi Mechi River Debate
The Kosi Mechi River Linking Project in Bihar has become a contentious issue, as thousands of flood victims from the Supaul district continue to protest. Despite the central government’s claims that this ambitious project will mitigate flooding, local communities argue that the initiative does not address the core flood challenges caused by the volatile Kosi River.
Protests Continue: Flood Victims Demand Real Relief
Flood-affected residents of Supaul are intensifying protests, demanding urgent relief and fair treatment:
- They highlight a glaring mismatch: the project diverts only ~5,247 cusecs of water, minimal when a flood can see flows of 6.6 lakh cusecs, making the flood-control claims negligible
- Villagers continue to suffer land erosion, complete loss of dwellings, crop damage (moong and paddy), and inadequate resettlement or compensation
- Local NGOs like Kosi Navnirman Manch have formally raised concerns about inflated flood-control claims and have demanded a detailed white paper from the government
- Protesters demand the erosion crisis be declared a disaster and are urging for immediate resettlement and relief.
Recurring Floods in Bihar: A State in Crisis
- Bihar, particularly north Bihar, is India’s most flood-prone region, accounting for 17.2% of the country’s total flood-affected area.
- Over 6.88 million hectares of land in the state are vulnerable to floods.
- During monsoon, rivers like Kosi and Mahananda, originating from Nepal and Tibet, overflow and inundate 28 of Bihar’s 38 districts.
- The 2008 Kosi flood remains a stark reminder of the region’s fragile hydrology and need for sustainable flood management.
Understanding the Kosi Mechi River Link: Key Features
- The Kosi Mechi River Project is India’s second river interlinking initiative, after the Ken-Betwa link.
- Managed by the NWDA under the Union Ministry of Jal Shakti, it proposes to:
- Divert surplus water from the Kosi River to the Mechi River, a tributary of the Mahananda.
- Construct a 76.2 km long canal to facilitate this transfer.
- Irrigate 2.15 lakh hectares of farmland in the Mahananda basin during the Kharif season.
Environmental and Strategic Aspects
- The project received a green clearance, with no forest land acquisition and no displacement of local populations.
- There are no wildlife sanctuaries or eco-sensitive zones within a 10-km radius.
- Strategically, this is an intra-state link aimed at balancing regional water disparity.
Hydrological Significance of the Kosi and Mechi Rivers
Kosi River
- Originates in Tibet, flows through Nepal, and enters India in Bihar.
- Known as the “Sorrow of Bihar” due to frequent flooding and shifting course.
- Formed by the confluence of Sun Kosi, Arun Kosi, and Tamur Kosi, collectively known as Saptakoshi.
Mechi River
- Rises in the Mahabharat Range in Nepal, forming the India–Nepal border in parts.
- Flows into Kishanganj district in Bihar, where it joins the Mahananda River.
- Is also a trans-boundary river, flowing through both Nepal and India.
Historical Background: From Kosi Treaty to Present Project
- The Kosi Agreement of 1954 between India and Nepal was signed to address Kosi’s unpredictable course and sedimentation problems.
- The current project is a continuation of the Eastern Kosi Main Canal (EKMC) system, extending it to the Mechi River.
- The goal is to utilize Kosi’s surplus monsoon water to irrigate the water-deficit Mahananda basin.
River Interlinking in India: A National Vision
- The concept of river linking dates back to the 1970s, proposed by Dr. K.L. Rao and Captain Dinshaw J. Dastur.
- In 1980, the National Perspective Plan (NPP) was launched by the Ministry of Irrigation.
- The NPP includes:
- 16 Peninsular Links
- 14 Himalayan Links (includes Kosi-Mechi)
- The Atal Bihari Vajpayee government revived the vision of a National Water Grid in the early 2000s.
Comparison: Ken-Betwa and Kosi Mechi River Projects
| Feature | Ken-Betwa Link | Kosi Mechi River Link |
| Region | MP–UP (Bundelkhand) | Bihar (Supaul to Kishanganj) |
| Purpose | Irrigation + Drinking Water | Irrigation (primarily) |
| Canal Length | 230 km | 76.2 km |
| Displacement | Yes (Panna Tiger Reserve) | None |
| Environment Concerns | Tiger Habitat | None reported |
| Status | Approved (2019) | Budget Allocated (2025) |
Criticism and Future Outlook
- Experts and activists argue that the Kosi Mechi River project’s irrigation focus ignores the urgent need for flood resilience.
- Villagers continue to suffer from erosion and submergence, with no direct relief mechanisms in place.
- While the long-term irrigation benefits may help farmers, immediate flood protection and resettlement remain unaddressed.
Conclusion: Rethinking the Kosi Mechi River Strategy
The Kosi Mechi River Linking Project, despite its irrigation promise, highlights the persistent gap between infrastructure-led water management and the realities of disaster-prone communities in Bihar. For a truly resilient water policy, the government must integrate flood control, community welfare, and ecological balance into the river linking framework.
To Download Monthly Current Affairs PDF Click here
Click here to get a free demo
Discover all about CLAT Exam
