The Chatra Gorge is a canyon cut by the Kosi River across the Mahabharat Range in Nepal.

The combined river flows through the Chatra gorge in a southerly direction to emerge from the hills.

Downstream of the gorge, the river enters the alluvial plains forming a huge megafan covering around 16,000 km2.

[6] A 269 metres (883 ft) high dam is proposed to be built near Barahakshetra across the Sapta Kosi in the Chatra gorge.

It will have a 3,000 MW power station and a barrage 8 km downstream with canals on both sides for irrigation.