Why In News?

The Union government initiated physical construction on Phase 1 of the Kosi-Mechi river linking project at the Bhenga river in Birpur, Bihar.  

What is the Kosi–Mechi Intra-State Link Project? 

The Kosi–Mechi Intra-State Link Project is an intra-basin river-linking project in Bihar that diverts surplus floodwater from the Kosi River to the Mechi River through a link canal, improving irrigation while reducing flood risks in North Bihar. 

  • Kosi River: Originating in the Tibet Autonomous Region of China, flowing through Nepal before entering Bihar. It is a major left-bank tributary of the Ganga and is popularly known as the "Sorrow of Bihar" due to frequent floods and heavy sediment load. 

  • Mechi River: Originates in the Mahabharat Range of eastern Nepal, forms part of the India–Nepal border, and is a tributary of the Mahananda River, which joins the Ganga.

It involves the remodelling of the existing Eastern Kosi Main Canal (EKMC) and construction of a 76.2 km new link canal extending up to the Mechi River. 

The project is being implemented under Pradhan Mantri Krishi Sinchayee Yojana–Accelerated Irrigation Benefit Programme (PMKSY–AIBP). 

KOSI-MECHI INTRA-STATE LINK PROJECT

Significance of the Project

Strengthens Irrigation Security: Provides assured irrigation during the Kharif season, reducing dependence on erratic monsoon rainfall. 

Enhances Agricultural Productivity: Reliable irrigation supports higher cropping intensity, better yields and increased farm incomes in the Seemanchal region. 

Mitigates Flood Risk: Diverts excess water from the flood-prone Kosi, helping reduce flood intensity in vulnerable districts of North Bihar. 

Promotes Rural Development: Improved irrigation boosts agricultural employment, strengthens the rural economy and enhances livelihood security. 

Improves Climate Resilience: Converts seasonal floodwater into a productive irrigation resource, improving Bihar's resilience to increasing climate variability. 

Supports Integrated Water Resources Management: Demonstrates efficient utilisation of surplus basin water through intra-state river linking under the National Perspective Plan.  

Source: PIB

PRACTICE QUESTION

Q. "River-linking projects seek to address regional imbalances in water availability but also raise ecological and governance concerns." Discuss. 150 words