New name Nagaon (Nowgong, New Settlement by Momai Tamuli Barbarua)

Boundary of the district

North is bounded by Sonitpur district & the Brahmaputra river, south is bounded by West Karbi Anglong and North Cachar Hills, East is bounded by East Karbi Anglong and Golaghat district.

Total Population 1893171 (1991) persons

Rural 1687449 (1991)

Urban 205722 (1991)

Extension 25⁰-45' to 26⁰ -45' North Latitude

92⁰ -33' -6" East

Hills Hatimura parbat 186.5 M
Barkandali 853 M
Kamakhya parbat 244 M
Average Altitude is 60.6 M

Major rivers
The Brahmaputra, Kalong, Sonai, Nanoi, Jamuna, Kopili and Barpani.

Beels and lakes and marshy lands
There are several beels, marshy lands and swamps are there, these are in reality old abandone channels of Kalong and Kopili rivers of Nagaon district. These are Marikalong, Potakalong,/ Haribhanga, Jongalbalahu, Samoguri beel, Urigadang and Nawbhanga. These beels are major unused resources of the district. There are nearly more than two hundred numerous marshy land exist here which should be used for development of the area.

The district looks like a broken dish north is up land South is also up land west is slop other half dish is in Marigaon district, Geomorphologically Marigaon and Nagaon makes a perfect Geomorphological area. The general slope of the district is towards the west from any place. East, North East and South East is hilly terrain.

Climate
The climate of this district is in general Monsoon type of climate. But there are some difference from the other districts of Assam.It divides the province in to two halves climatically, from this district to western most district Dhubri rainfall is in increasing rate, again from here to east ward up to Tinsukia rainfall is also in increasing rate. Here the climate is in extreme type. The pattern of rainfall is such that, South is dry North is rainy area, rainfall from south to north is 1000 mm per year to 2000 mm per year. Lanka area is in semi desertic Zone. Cold season from December to February. Probability of flood from June to October. Only April to May is per Monsoon. October to November is only Post Monsoon. Average rainfall is 1750 mm (last 50 years data base). Deforestation, El-Nino effect, speedy urbanization and global warming in general changing the rainfall pattern of the district. Now 12% Vegetation cover is remained in the district which should be minimum 33%.

Nagaon town
Nagaon town is situated at 92⁰ -41' -39" E and 26⁰ -20' -39" N

Geology
Sandy new alluvium

Altitude
61m from mean sealevel

Rainfall
1760 mm average annual

Temperature
Winter Max. 24.8⁰ C Min. 11.2⁰ C

Rivers & slopes
Major river is Kalong which divided the town in to two halves Haibargaon and Nagaon. It is comparable with Poe river of Italy which divided the town in two divide lines, these divide lines are Levees of the river Kalong.
Haibargaon is slope down towards west and then south west to river Sonai, and Nagaon is slope down towards south east and then south to the beels and then to Kalong near Bebejia.