Gandak Barrage

Gandak Barrage, also known as Valmikinagar Barrage, is a 740-metre barrage with 36 gates on the Gandak River at Valmikinagar in West Champaran district, Bihar, on the India-Nepal border. Completed in 1968-69 under the 1959 Gandak Agreement between India and Nepal, it regulates river flow for irrigation and flood control. The barrage offers river views, border landscape and proximity to Valmiki Tiger Reserve, making it a notable engineering and scenic stop.

Visitors can expect a long barrage structure with 36 sluice gates spanning the Gandak River at the India-Nepal border. The site offers wide river views, views of the reservoir upstream and regulated flow downstream, and a straight barrage road crossing the river. The surrounding area is flat with forested hills of Valmiki Tiger Reserve nearby. Visitors can walk along approach roads, view the gates, take photographs from designated viewpoints, and observe the border area and nearby Triveni confluence landscape.

Gandak Barrage was constructed as part of the Gandak River Project under the Gandak Agreement signed in 1959 between India and Nepal. Construction started in 1959 and the barrage was completed in 1968-69. The 740-metre structure with 36 gates was built to provide irrigation to about 1.5 million hectares in Bihar, Uttar Pradesh and Nepal, and for flood control and power generation. It remains a major joint river management project between the two countries.

The Gandak River, also known as Narayani in Nepal, is regarded as sacred in local tradition and is associated with the nearby Valmiki Ashram where sage Valmiki is believed to have composed the Ramayana. The barrage area is part of the cultural landscape of Valmikinagar and the Triveni region, visited by pilgrims and nature tourists.