The district of Dibrugarh with only one sub-division is situated in the eastern part of Assam. The district is surrounded by Dhemaji district and a part of Lakhimpur district in the north, part of Sivasagar district and Arunachal Pradesh in the south, Tinsukia district in the East and Sivasagar dist in the West. The district occupies an area of 3381 Sq Km.
The river Brahmaputra flows throughout the North Western boundary of the district. The only tributary falling at Brahmaputra in the district is Buridihing tributary which divided the district from East to West. It touches the town Naharkatia in the East, Khowang in the middle and at the last part of its course forms the boundary line between Dibrugarh and Sibsagar districts. The Dibrugarh district is a plain district of Assam. The entire is flat with gradual slop from the East Arunachal hills to the West. The soil of the district is mostly fertile Alluvial soil and this adjorning with the river Brahmaputra are composed sand and clay in varying proportion.
Dibrugarh town is the district headquarter, situated on the southern bank of the Brahamaputra, it is connected by broad gauge railway line of N.F. Railway to the rest of the state and the country through Tinsukia. The N.H.-37 is the major road running through the district. Mohanbari Airport is located at a distance of about 16 KM from Dibrugarh town, which serves the Upper Assam district of Dibrugarh, Tinsukia and Sivasagar and Arunachal Pradesh and is linked with Guwahati, Kolkata, and Delhi. Besides, the Air force field at Chabua (Nadua) at a distance of about 25 KM from Dibrugarh is also used for air link with other important towns of the North East and Kolkata.
Oil and Tea are the major industries of the district. The headquarter of the Oil India Ltd. is located at Duliajan, at a distance of about 50 KM from Dibrugarh town. The Fertiliser Corporation of India and Assam Petro-Chemicals Ltd. At Namrup and the Assam Gas Co. at Duliajan, NEEPCO near Duliajan are some of the other major industries in the district.
Geographical area : 3381 SQ. KM.
Total Population: 13,26,335
Male: 6,76,434 Female: 6,49,901
Rural Population: 1082605
Urban Population: 243730
No. Of Towns: 3
Towns Committee: 2 (Chabua & Naharkatia)
Municipal Board: 1
Census Town: 6
Police Stations: 14
Police Out Post 19 both sanctioned Non-sanctioned Out Post Revenue Circle: 7
Development Block: 7
Gaon Panchayat : 93
Anchalik Panchayat : 7
Fire Brigade Station : 4 (The figure does not include The Fire services of Army, Airport, OIL etc.)
Village : 1362
Inhabited Village: 1306
Forest Village: 27
Tea Garden: 144
Reserve Forest: 5 (Area = 217941.648 Hect.)
Medical College: 1
State Dispensary: 13
Name Of The Revenue Circles :
Dibrugarh East Revenue Circle.
Dibrugarh West Revenue Circle
Moran Revenue Circle
Tingkhong Revenue Circle
Naharkatiya Revenue Circle
Tengakhat Revenue Circle
Chabua Revenue Circle
Name Of The Development Blocks:
Barbaruah Development Block
Joypur Development Block
Khowang Development Block
Lahowal Development Block
Panitola Development Block
Tengakhat Development Block
Tingkhong Development Block
Almost 90% of cultivated area is rainfed in the district. Since most of the crops are raised as rain fed water resource management is one of the key factors for determining the yield. Though the district enjoys an abundant of rainfall (2076mm per annum) but the uneven distribution of rainfall over time spread of the year is major limiting factor in crop production in absence of a efficient and suitable water resource management system. Watershed management, rainwater harvesting and ground water recharge can help the augment water availability in rain-fed areas. On the other hand, the district has flood prone area of approximately 45061 ha, where unpredicted flood not only directly damages the standing crops but also leads to water stagnation, silt deposition and erosion causing serious threat to crop cultivation.
Rivers : Brahmaputra, the mighty river flows for a length of 95 km through the northern margin of the district, to the Patkai foothills on the south. The Burhi Dihing, a major tributary of the Brahmaputra with its network of tributaries and wetlands flows through the district from east to west. Sessa another tributaries of Burhi Dihing creates havoc in summer due to flood. Besides these there are Streams and many Beels and marshy lands.
Dibrugarh is considered as an economic hub of North East region of India. Dibrugarh is at the centre of economic activities dominated by the following industries: (a) Oil and natural gas (b) Tea production (c) Tourism (d) Power generation (e) Fertilizer (f) Cottage industry.
It was in Digboi, 50 miles (80 km) from Dibrugarh, that the first oil well was dug during the British era. Today, Duliajan, Dikom, Tengakhat and Moran are the key locations for oil and gas industry in the district. Oil India Limited, the second such public sector company in India engaged in exploration and transportation of crude oil has its field’s headquarters in Duliajan, at a distance of 50 km from Dibrugarh city. The company was granted the coveted Navratna status by the Ministry of Petroleum and Natural Gas, Govt. of India in 2010.
The Assam Gas Company Limited, a state public sector undertaking engaged in the distribution of natural gas functions with its headquarters in Duliajan.Assam Gas Company Ltd. has a network of underground natural gas trunk and distribution pipelines that serves about 380 tea estates, 900 commercial establishments, about 27,500 domestic consumers and several big industrial consumers in the districts of Dibrugarh, Tinsukia, Sivasagar,Jorhat,Golaghat and Cachar in Assam.It has its present headquarters in the oil town of Duliajan in the district of Dibrugarh,Assam,India. The Company has a capacity to transport 5.5 MMSCMD of natural gas. Over the years AGCL has established branch offices in 14(fourteen) different locations in Assam.
The Assam Gas Cracker Project, also known as Brahmaputra Cracker and Polymer Limited, was proposed as a part of implementation of Assam Accord signed by Government of India on 15 August 1985. 2nd largest Nitrogen plant in India by Linde India Ltd.The Assam Gas Cracker Project was approved by the Cabinet Committee on Economic Affairs, in its meeting held on 18 April 2006, The site selected for Assam Gas Cracker Project is at Lepetkata, 15 km from Dibrugarh onNH-37. A joint-venture agreement was signed on 18 October 2006, and the company Brahmaputra Cracker and Polymer Limited was registered on 8 January 2007. Dr. Manmohan Singh, Hon'ble Prime Minister of India, laid the foundation stone of this project on 9 April 2007. However, till date work has not been completed.
Duliajan Numaligarh Pipeline Ltd is a joint venture company promoted by Assam Gas Company Limited (AGCL), Numaligarh Refinery Limited (NRL) and Oil India Limited (OIL) with equity participation of 51 per cent, 26 per cent and 23 per cent respectively. The Duliajan-Numaligarh pipeline will be the first major cross-country natural gas pipeline in Assam and once the availability of natural gas is ensured, it is expected to be extended to major consumption centers of natural gas in Nagaon and Guwahati.
Dibrugarh district boasts of the highest amount of tea production in India. There are several tea gardens dating back to the British era. The first garden was at Chabua, a place 20 miles (32 km) away from Dibrugarh, owned by Maniram Devaan. Today, the headquarters of the Directorate of Development of Small Tea Growers in India is functioning from Dibrugarh, besides a Regional Office of the Tea Board of India headed by a Deputy Director of Tea Development (Plantation) is also located in the city.
Rail, road and air connectivity coupled with the presence of large number of tourist spots in and around Dibrugarh city has seen impressive growth of tourism industry in this part of India in recent part. Dibrugarh has also become an important destination as well as a major transit point for tourists from both India and abrod. Such tourist circuits include - Dibrugarh - Roing - Mayudia - Anini Tourist Circuit, Dibrugarh - Guwahati river cruise besides 'Tea Tourism' for tourists who prefer serenity and novelty to the hustle-bustle of established tourist destinations.