Dehri, often referred to as Dehri-on-Sone, is a community development block and Nagar parishad located in the Rohtas district in the Indian state of Bihar. Located alongside the Sone River,[2] Adjacent to Dehri, a railway hub, lies Dalmianagar, a former industrial town.

Meaning and Origin
The Sone River is the source of the name Dehri-on-Sone. The city is located along the Sone River’s banks.