Indrapuri Barrage

Indrapuri Barrage, also known as Sone Barrage, is a 1,407-metre barrage across the Son River at Indrapuri in Rohtas district, Bihar, near the Bihar-Jharkhand border. Completed in 1968, it is among the longest barrages in the world and serves as the headworks of the Sone Canal System. Notable for its engineering scale, wide river views and vital role in irrigation for Bihar, it is a popular local sightseeing and picnic spot.

Visitors can expect a long concrete barrage with multiple gates spanning the wide Son River, with expansive upstream reservoir views and downstream river channel. The site offers open embankments and approach roads for walking, photography of the barrage structure and river landscape, and views of water discharge when gates are open. There is no formal visitor centre; the experience is primarily scenic, engineering-focused and suitable for short sightseeing and picnicking in daylight hours.

Constructed between 1960 and 1968 across the Son River to replace the old anicut system, Indrapuri Barrage was built as the headworks for the modernized Sone Canal System. At 1,407 metres it was among the longest barrages in the world at completion and remains a major irrigation infrastructure project for Bihar, supporting agriculture in Rohtas, Bhojpur, Aurangabad and neighbouring districts.