Noakhali District is bordered by
Comilla District to the north, the
Meghna estuary and the
Bay of Bengal to the south,
Feni and
Chittagong districts to the east and
Lakshmipur and
Bhola districts to the west. The district has an area of . The district represents an extensive flat, coastal and delta land, located on the tidal floodplain of the
Meghna River delta, characterised by flat land and low relief. The area is influenced by diurnal tidal cycles; the tidal fluctuations vary depending on seasons, and are most pronounced during the monsoon season. On three sides of Noakhali, an
alluvial plain that is inundated annually and fertilised by
silt deposits from the Meghna estuary. The swift currents that course down from the
Himalayas carry rich fertile silt. When it reaches the Bay of Bengal the silt settles along the coast gradually forming new land called the "chars". The district of Noakhali has actually gained more than of land in the past fifty years. In addition to the Meghna, the district is home to other rivers such as the
Feni River and Banmi as well as the Noakhali, Mahendra, Dakatia, Chandraganj canals.
Climate Noakhali has a
tropical climate and has significant rainfall in most months of the year, with a short dry season. In Noakhali, the average annual temperature is and the average annual rain fall is about . With an average temperature of , May is the warmest month. At on average, January is the coldest month of the year. The driest month is January with of precipitation. In July, the rainfall reaches its peak, with an average of .
Flora and fauna Flora Noakhali is one of the coastal districts at the fringe of the Bay of Bengal with vast char land of recent origin in the south. Plantlife is confined generally to variations belonging to the lower Gangetic plane and of other districts in the southern region of the country. Except for the Government-sponsored
afforestation program for the coastal belt, there is no organized forestry in the district. However, all homesteads are usually covered by dense and lush green foliage of a wide variety of trees. Most of the trees grown in homestead forests are fruitbearing.
Mangoes, although poor in quality, grow in abundance.
Almond or badam (
Arachis hypogea) are unusual. Other common trees are
jack fruit (
Artocarpus heterophyllus),
blackberry (
Syzygium cumini),
tamarind (
Tamarindus indica), jalpai (
Elaeocarpus tectorius), bel (
Aegle marmelos), chalta (
Dillenia indica), boroi, guava (
Psidiumguagava), etc.
Banana (
Banana musa sapientum) is seen almost everywhere but the fruit quality is rather poor.
Litchi (
Litchi chinensis), kamranga (
Averrho karmbola), ata, haritaki (
Terminalia chebula), amloki (
Phyllanthus emblica), gaab (
Dioaspyros precatorius), etc. grow abundantly. The juice of the gaab fruit mixed with charcoal is used in colouring boats and stiffening fishing nets. Coconut (
Cocos nucifera) is abundantly produced in Noakhali. Indigenous timber trees include Koroi, sheel koroi (
Albizia procera), garjan (
Dipterocarpus turbinatus), jarul (
Iegerstroemia speciosa), shimul (
Bombax ceiba), etc. However, various exotic trees like teak, mahogany (
Swietenia macrophylla), sissu (
Dalbergia sissoo), etc. have been produced as wayside trees as well as in farm forestry. Mandar (
Erythrina variegata), a thorny tree mostly used as fuel and fencing, is seen in almost every household forest. Kadom (
Anthocephalus cadamba) are very common and are preferred for manufacturing matchsticks. The fruit of shimul or karpas is used for stuffing mattresses and pillows and has a silky appearance. Newly introduced trees include eucalyptus and pine. Mango wood is not good as a timber, but owing to its abundance, it is much used. The wood of the tamarind and the kul is hard-grained and of good quality. The amaltas is used for house and rough furniture construction. Jarul is used for boat building and pillars of houses. The luxuriant growth of palms is the most characteristic feature of the vegetation. Betel nut palm or supari (
Areca catechu) plantations are more and more abundant towards the north and the west of the district and grow almost lie forests. Coconuts are grown abundantly throughout the district. Toddy palms or tal (
Borassus flabellifer) and date palms or khejur are also very common. Date palm is a valuable tree. The juice is extracted and made into gurr, the leaves are made into mat. Tal wood is used for posts of houses and other building purposes. Its leaves are used for making handmade mats and large hand fans. Betel nut and coconut are a good sources of household income. Shade trees include banyan or bot (
Ficus benghalensis), pipal (
Ficus religiosa) and nim (
Azadirachta indica) and are seen commonly. There are several varieties of cane, a good deal of bamboo of different varieties, and thatching grass or chhan although their plantations are gradually but steadily decreasing. Use of bamboo is widespread for posts and fencing for houses, basket making and producing trays of various kinds. Bet is used for making baskets, binding and thatching. In the marshes are found sola (
Aeschynomene aspera) and murta or mostak (
Schumannianthus dichotomus ) which is extensively used for making various types of mats famously known as
shital pati and baskets. The forest department of the government of Bangladesh created mangrove forests in
Nijhum Dwip. The most common type of planted tree species on the island is keora, also known as kerfa, which has fast growing roots holding the sandy land. The tree occurs on newly accreted soil in moderately to strongly saline areas and is considered as a pioneer species in ecological succession.
Fauna Owing to the absence of organized forest and other natural conditions, no large or medium-sized carnivores are seen in the district. However, the following mammals have still seen the district although their number is gradually decreasing: jackal (
Canis aureus), fox (
Vulpes bengalensis), large Indian civet or (
Viverra zibetha), otter or uud (
Lutra lutra), Irrawaddy, kath biral (
Callosciuruspy gerythrus), Bengal mongoose or beji (
Herpestes edwards), different kinds of rats and several species of bats. Buffalo is found in char and on Hatia island. The vast offshore areas and the emerging islands of the Noakhali district have become potential places for raising buffalo. Almost all varieties of birds that are seen throughout Bangladesh are also commonly seen in Noakhali. Raptors include: white-rumped vulture (
Gyps bengalensis), lanner falcon or baj (
Falco biarmicus), marsh harrier or (
Circus aeruginesus), pariah cheel (
Milvus migyans lineatas), several species of stork like pond heron or kani boga (
Ardeola greyii), cattle egret or go boga (
Babulcus ibis) and black bittern or kala boga (
Dupeter plovicollis), crows (
Corvus splendens) and kingfisher (
Alcedo atthis), etc. Ducks are represented by a number of species including winter migrants like: greenleg goose (
Anser anser), rajhans (
Anser indicus), the pintail (
Anas acuta) and some other domestic species. Water birds include: the little cormorant or pankawri (
Phalacrocorax niger), waterhen or dahuk (
Amaurornis phonicurus), kora (
Gallicrex cinarea). Cuckoo or kokil (
Cuculus micropterus), black-hooded oriole or halde pakhi (
Oriolus xanthornus), kingcrow or finge (
Dicrurus adsimilis), moyna (
Sturnus malabarica), shalik (
Acridotheres tristis), redvented bulbuli (
Pycnotus cafer), tuntuni (
Orthotomus sutorious), shayma (
Copsyehus malabaricus), sparrow (
Passer domesticus), flowerpecker (
Dicacum erythrochynchos), babui (
Plocus phillippinus) famous for their artistic nest building, and several species of pheasant quails (
Eudynamis scolopscea), pigeons and doves are also present. Reptiles include snakes, lizards and tortoises. The snakes include varieties of cobra, and , all poisonous. The lizards include gecko, calotis, wall lizard and monitor lizard. There are amphibians like toads, frogs and tree frogs. There are many species of sea and fresh water fish available in the district. The list of the varieties is too long to include here. Although Noakhali is coastal district, most of the fish supply comes from ponds and tanks, canals and low-lying areas inundated by rain water, popular varieties include: the carp tribe (
Cyprinidoes), ruhi (
Labeo rohita), katla (
Catla catla), mrigel (
Cirrhinus mrigala) and kalabaush (
labeo calbasu), airh (
Sperata aor), pangas (
Pangasius pangasius), tengra (
Mystus vittatus) of several types, magur (
Clarias batrschus), singi (
Saccobranchus fossilis) and koi (
Mystus vittatus) are considered to be delicious, shoul (
Channa striatus), boal (
Wallago attu), gozar (
Channa marulius), chitol (
Chitala chitala), foli (
Notopterus notopterus) and pabda (
Ompok pabda) are available in abundance. (
Tenualosa ilisha), (
Awaous guamensis), (
Lates calcarifer), (
Labeo bata), and fish are also available in abundance. Prawn, crayfish (
icha) and crabs are also found. Tilapia, Muralla, Punti, Khoksha, Kajuli, Kakila, Khailsha, Bain and Chela are small fish like Mola, Kachki are found all over the district in abundance. Created mangrove forests in Nijhum Dwip are the habitat of about 5,000 cheetral or spotted deer. This island has been declared as a unique eco-tourist spot for its ideal natural setup with rich bio-diversification factors and its perennial mangrove forest with wild animals like spotted deer, wild boar and rhesus macaque and for the ideal habitat for fish resources. ==Culture==