nor bu lag chu), is a major river of eastern Bhutan, that has formed a scenic valley with high peaks and steep hills.

[2][3] It crosses into Bhutan at a relatively low elevation of 1,200 metres (3,900 ft),[3] flowing in a southerly direction up to Nye and changes its course to south-easterly until it reaches Lhuentse Dzong.

Eastern Bhutan lies across the Donga range running north–south across the country and is crossed by the 3,780-metre (12,400 ft) high Thrumshingla pass.

Finally the road leaves Thrumshingla National Park area and emerges into the upper part of the large valley of the Kuri Chhu, lush with bamboos and ferns.

The winding road gradually descends through corn fields, rice terraces and tropical fruit plants begin to appear.

The hydropower plant was formally inaugurated by HRH Trongsa Penlop Jigme Khesar Namgyel Wangchuck and H.E Shri Sudhir Vyas, Ambassador of India to Bhutan, on April 26, 2006.

[10] Some of the villages of traditional "kushitara" weavers, linked with the royal family of Bhutan, are found in the Kuri Chhu valley near Mongar.