The Koshi Barrage, built in the 1960s, spans the river at the southern end of the reserve, close to the India border. Above it the river backs up into a wide lake, and below it the outflow churns over sandbanks. In winter both sides attract huge numbers of birds, and the road across the barrage gives a raised viewpoint over the water.
With a scope, birders pick through flocks of brown-headed and black-headed gulls for rarer species, count terns and skimmers, and scan the ducks for less common pochards and teals. Waders work the mud, and ospreys and fish eagles hunt the outflow. The deeper water below the barrage is also one of the better places to see dolphins surfacing.
The barrage is a busy road and a sensitive border structure, so photography rules can be strict and police may ask you to move on. Our guide knows where you can stand and stop. We usually combine this trip with lunch and an afternoon walk elsewhere in the reserve.
Good for
- Photographers
- Solo
- Seniors
Questions travellers ask
Where is the Koshi Barrage?
At the southern end of Koshi Tappu, on the Nepal–India border, about 45–60 minutes' drive from the main camps. The East–West Highway crosses the river nearby.
Can I take photos at the Koshi Barrage?
Bird photography from approved spots is usually tolerated, but photographing the barrage structure and security posts may be restricted. Follow your guide and any instructions from police.
When is the best time for Koshi Barrage birding?
December to February, when migratory gulls, terns and ducks are at peak numbers. Early mornings are best before heat haze builds over the water.