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                 Welcome to
Dehri, a small town in northeastern India, lies on the banks of the
Sone River with an average elevation of 99 metres (324 feet). It has a station on the Grand Chord railways route, and the Grand Trunk Road (NH 2) also passes through the town. The main occupation of the local population is agriculture - principally rice growing.As of the 2001 Indian census[1],

 Dehri had a population of 119,007. Males constitute 53% of the population and females 47%. Dehri has an average literacy rate of 66%, higher than the national average of 59.5%: male literacy is 74% and, female literacy is 57%. In Dehri,

Dehri has many good educational institutes. For primary education, a lot of government supported and private schools are there, where you can get education in Hindi medium as well as English medium. A few of the famous schools are Model School, Sun Beam Public School, GEMS English School and Dehri High School. There is a girls school- Rama Rani Jain Balika Unch Vidyalaya and one girls college- Mahila College. For higher education, there are several undergrads colleges: Nehru College, Jagjeevan College, Women's College and SP Jain College and for Computer Education " VISHWA COMPUTER SAKSHARTHA MISSION". There are plenty of private tuition facilities. Educational institutes in Dehri include Dehri High School & Dillian High School. Also, known by the name Dehri-On-Sone, this place has produced great many IITians and NRIs.

There are two parallel bridges, one for road and another for railway. The road bridge (Jawahar Setu built by Gammon India Ltd in 1963-65) over Sone was the longest (3061 m) in Asia until it was surpassed by the Mahatma Gandhi setu (5475 m) over the river Ganga at Patna. The railway bridge is still the longest railway bridge in Asia.

Upper Sone Bridge at Dehri-on-sone on the river Sone is the longest railway bridge in India. The bridge is on Howrah-Delhi Grand Chord Line. it is 3 kms and 65 meters in length... having 93 spans....and now its going to be the widest bridge in india too.                                           


Dalmianagar is one of the oldest and biggest industrial towns in India. It is situated near Dehri-on-Sone on the banks of the Son River in Rohtas District of Bihar.

The Industrial town of Dalmianagar was founded by the famous industrialist Ramkrishna Dalmia, a doyens of business in 20th century India and founder of the Dalmia group. He was assisted by his younger brother Jaidayal Dalmia and son in law Sahu Shanti Prasad Jain in establishing many factories of Rohtas Industries Ltd. in Dalmianagar.

Shanti Prasad Jain took over Rohtas Industries Ltd. from his father-in-law, and under his stewardship, Dalmianagar developed into a massive industrial town from 1940s till 1980s with factories producing sugar, cement, paper, chemicals, vanaspati etc. employing top professionals of the country. Dalmianagar boasted of vast and beautiful housing colony, gardens, clubs, schools, market complexes, hospital etc. for its employees. Rohtas Industries had their own private aircraft in those days and a small air-field near Dalmianagar.


The Son river at 784 kilometres (487 miles) long, is one of the largest rivers of India. Its chief tributaries are the Rihand and the Koel. The Son has a steep gradient (35-55 cm per km) with quick run-off and ephemeral regimes, becoming a roaring river with the rain-waters in the catchment area but turning quickly into a fordable stream. The Son, being wide and shallow, leaves disconnected pools of water in the remaining part of the year. The channel of the Son is very wide (about 5km at Dehri) but the floodplain is narrow, only 3 to 5 km wide. In the past, the Son has been notorious for changing course, as is traceable from several old beds on its east. In modern times this tendency has been checked with the anicut at Dehri, and now more so with the Indrapuri Barrage.