Dhakas Padma Barrage and South Asias Changing Water Map

Bangladesh has approved the construction of the Padma barrage, a major project to manage the flow of the Padma river, which is the name of the Ganga inside Bangladesh. The barrage is meant to ease the country's seasonal water scarcity, storing water during times of plenty for use when supplies run low.

The planned structure is about 2.1 km long and is designed to store around 2,900 million cubic metres of water. It is intended to serve about 6.5 crore people across southwestern and northern Bangladesh. The project is estimated to cost around Tk 50,443 crore, roughly Rs 39,170 crore, and is expected to take about seven years to complete.

What makes the project significant for the region is its location. The Padma barrage will sit just 180 km downstream of the Farakka barrage in West Bengal. Farakka is one of India's largest barrages and was built with a feeder canal to divert Ganga water into the Bhagirathi-Hooghly system, mainly to flush silt and keep the Kolkata port navigable. Bangladesh has increasingly viewed Farakka as reducing the water reaching it during the lean season.

Because the Ganga is a shared, transboundary river, any large structure on it raises questions about water sharing between the two neighbours. The project signals how water is becoming a more important factor in South Asian relations, where upstream and downstream needs must be balanced through dialogue and existing river-sharing arrangements.

For exam preparation, this topic connects geography, transboundary rivers and International Relations, making it relevant for UPSC and State PCS, covering the Ganga, the Farakka barrage, India-Bangladesh water sharing and regional cooperation.