A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming a hierarchical pattern .
133-562: Bongaigaon ( / b ɒ ŋ ˈ ɡ aɪ ɡ aʊ / ; is a industrial city in the Indian state of Assam . Its urban area spans across Bongaigaon and Chirang district . It also acts as the district headquarters of Bongaigaon district and commercial and industrial hub of the west part of the state of Assam. The New Bongaigaon Junction railway station is the 12th largest railway station in Northeast Frontier Railway zone which
266-615: A "Look East" policy that seeks to strengthen partnerships with the ASEAN nations, Japan , and South Korea that revolve around many issues, but especially those involving economic investment and regional security. China's nuclear test of 1964 , as well as its repeated threats to intervene in support of Pakistan in the 1965 war, convinced India to develop nuclear weapons. India conducted its first nuclear weapons test in 1974 and carried out additional underground testing in 1998. Despite criticism and military sanctions, India has signed neither
399-508: A 1988 coup d'état attempt in the Maldives. After the 1965 war with Pakistan, India began to pursue close military and economic ties with the Soviet Union ; by the late 1960s, the Soviet Union was its largest arms supplier. Aside from its ongoing special relationship with Russia , India has wide-ranging defence relations with Israel and France . In recent years, it has played key roles in
532-690: A multi-party system , India has six recognised national parties , including the Indian National Congress (INC) and the Bharatiya Janata Party (BJP), and more than 50 regional parties . The Congress is considered center in Indian political culture , and the BJP right-wing . For most of the period between 1950—when India first became a republic—and the late 1980s, the Congress held
665-498: A closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as a sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into a multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In
798-427: A comparatively destitute country in 1951, India has become a fast-growing major economy and a hub for information technology services , with an expanding middle class. India has a space programme with several planned or completed extraterrestrial missions . Indian movies , music , and spiritual teachings play an increasing role in global culture. India has substantially reduced its rate of poverty , though at
931-444: A drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called a watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation , a common task in environmental engineering and science. In
1064-449: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for
1197-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of
1330-781: A long-lasting composite Hindu culture in south India. In the Punjab , Sikhism emerged, rejecting institutionalised religion. The Mughal Empire , in 1526, ushered in two centuries of relative peace, leaving a legacy of luminous architecture . Gradually expanding rule of the British East India Company followed, turning India into a colonial economy but also consolidating its sovereignty . British Crown rule began in 1858. The rights promised to Indians were granted slowly, but technological changes were introduced, and modern ideas of education and public life took root. A pioneering and influential nationalist movement emerged, which
1463-653: A majority in the Parliament . Since then, however, it has increasingly shared the political stage with the BJP, as well as with powerful regional parties which have often forced the creation of multi-party coalition governments at the center. In the Republic of India's first three general elections, in 1951 , 1957 , and 1962 , the Pandit Jawaharlal Nehru -led Congress won easy victories. On Nehru's death in 1964, Lal Bahadur Shastri briefly became prime minister; he
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#17328550603641596-672: A quarter of a million local government bodies at city, town, block, district and village levels. In the 1950s, India strongly supported decolonisation in Africa and Asia and played a leading role in the Non-Aligned Movement . After initially cordial relations with neighbouring China, India went to war with China in 1962 and was widely thought to have been humiliated. This was followed by another military conflict in 1967 in which India successfully repelled Chinese attack. India has had tense relations with neighbouring Pakistan;
1729-769: A small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America , the islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through the Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of
1862-782: A strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of the world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins, the Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of
1995-431: A third of Indian plant species are endemic. India also contains four of the world's 34 biodiversity hotspots , or regions that display significant habitat loss in the presence of high endemism. According to official statistics, India's forest cover is 713,789 km (275,595 sq mi), which is 21.71% of the country's total land area. It can be subdivided further into broad categories of canopy density , or
2128-516: A vast hinterland. It is one of the biggest industrial towns in Lower Assam. The district is part of the Brahmaputra River 's basin . Bongaigaon has a borderline monsoon-influenced humid subtropical climate ( Köppen Cwa ) marginally too cool to be a tropical savanna climate ( Aw ). During the "cool" season from November to February, afternoons are warm to very warm and mornings are cool. In
2261-608: A young and rapidly growing working-age population; growth in the manufacturing sector because of rising education and engineering skill levels; and sustained growth of the consumer market driven by a rapidly growing middle-class. The World Bank cautions that, for India to achieve its economic potential, it must continue to focus on public sector reform, transport infrastructure , agricultural and rural development, removal of labour regulations, education , energy security , and public health and nutrition. Drainage basin Other terms for
2394-518: Is a federation with a parliamentary system governed under the Constitution of India—the country's supreme legal document. It is a constitutional republic. Federalism in India defines the power distribution between the union and the states . The Constitution of India, which came into effect on 26 January 1950, originally stated India to be a " sovereign , democratic republic ;" this characterisation
2527-672: Is defined by regional kingdoms and cultural diversity. When Harsha of Kannauj , who ruled much of the Indo-Gangetic Plain from 606 to 647 CE , attempted to expand southwards, he was defeated by the Chalukya ruler of the Deccan. When his successor attempted to expand eastwards, he was defeated by the Pala king of Bengal . When the Chalukyas attempted to expand southwards, they were defeated by
2660-407: Is expected to remain so in the near future. According to a 2011 PricewaterhouseCoopers ( PwC ) report, India's GDP at purchasing power parity could overtake that of the United States by 2045. During the next four decades, Indian GDP is expected to grow at an annualised average of 8%, making it potentially the world's fastest-growing major economy until 2050. The report highlights key growth factors:
2793-618: Is indicated by the large number of megalithic monuments dating from this period, as well as by nearby traces of agriculture , irrigation tanks , and craft traditions. In the late Vedic period, around the 6th century BCE, the small states and chiefdoms of the Ganges Plain and the north-western regions had consolidated into 16 major oligarchies and monarchies that were known as the mahajanapadas . The emerging urbanisation gave rise to non-Vedic religious movements, two of which became independent religions. Jainism came into prominence during
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#17328550603642926-511: Is one of the major railway zones in India. According to lore, the name 'Bongaigaon' derives from the words 'bon' (wild) and 'gai' (cow). In the distant past, wild cows were often a menace to villagers in this area, due to which the district got its name. The area was ruled by zamindars hailing from the Koch belonging to Indo-Mongoloid ethnic group of peoples from the 16th century to the end of princely states in 1956. The original Goalpara district
3059-480: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes
3192-645: Is situated 200 km west of the State Capital and has an important place in the communication network of Assam and wider northeast India. The New Bongaigaon railway station is a major hub connecting Assam with the rest of India. This town is also very well connected by road through the National Highways 31 B and 31C. This connectivity and the strategic location of the town in the region has made it an important center in trade and commerce in Western Assam, serving
3325-579: Is supported among these forests, and elsewhere, in protected habitats . According to the Oxford English Dictionary (third edition 2009), the name "India" is derived from the Classical Latin India , a reference to South Asia and an uncertain region to its east. In turn the name "India" derived successively from Hellenistic Greek India ( Ἰνδία ), ancient Greek Indos ( Ἰνδός ), Old Persian Hindush (an eastern province of
3458-600: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within
3591-692: The Achaemenid Empire ), and ultimately its cognate , the Sanskrit Sindhu , or "river", specifically the Indus River and, by implication, its well-settled southern basin. The ancient Greeks referred to the Indians as Indoi ( Ἰνδοί ), which translates as "The people of the Indus". The term Bharat ( Bhārat ; pronounced [ˈbʱaːɾət] ), mentioned in both Indian epic poetry and
3724-682: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this
3857-458: The Andes also drains to the Atlantic, as does most of Western and Central Europe and the greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to the Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains ,
3990-609: The Arabian Sea . Coastal features include the marshy Rann of Kutch of western India and the alluvial Sundarbans delta of eastern India; the latter is shared with Bangladesh. India has two archipelagos : the Lakshadweep , coral atolls off India's south-western coast; and the Andaman and Nicobar Islands, a volcanic chain in the Andaman Sea . Indian climate is strongly influenced by
4123-497: The Asiatic cheetah ; the blackbuck, no longer extant in Punjab, is now severely endangered in India, and the cheetah is extinct. The pervasive and ecologically devastating human encroachment of recent decades has critically endangered Indian wildlife. In response, the system of national parks and protected areas , first established in 1935, was expanded substantially. In 1972, India enacted
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4256-587: The Comprehensive Nuclear-Test-Ban Treaty nor the Nuclear Non-Proliferation Treaty , considering both to be flawed and discriminatory. India maintains a " no first use " nuclear policy and is developing a nuclear triad capability as a part of its " Minimum Credible Deterrence " doctrine. It is developing a ballistic missile defence shield and, a fifth-generation fighter jet . Other indigenous military projects involve
4389-469: The Constitution of India , is used in its variations by many Indian languages . A modern rendering of the historical name Bharatavarsha , which applied originally to North India , Bharat gained increased currency from the mid-19th century as a native name for India. Hindustan ( [ɦɪndʊˈstaːn] ) is a Middle Persian name for India that became popular by the 13th century, and
4522-736: The Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of the world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan,
4655-676: The Ganges and the Brahmaputra . According to some current projections, the number and severity of droughts in India will have markedly increased by the end of the present century. India is a megadiverse country , a term employed for 17 countries that display high biological diversity and contain many species exclusively indigenous , or endemic , to them. India is the habitat for 8.6% of all mammals , 13.7% of bird species, 7.9% of reptile species, 6% of amphibian species, 12.2% of fish species, and 6.0% of all flowering plant species. Fully
4788-566: The Himalayas . Immediately south of the emerging Himalayas, plate movement created a vast crescent-shaped trough that rapidly filled with river-borne sediment and now constitutes the Indo-Gangetic Plain . The original Indian plate makes its first appearance above the sediment in the ancient Aravalli range , which extends from the Delhi Ridge in a southwesterly direction. To the west lies
4921-532: The Indian Rebellion of 1857 . Fed by diverse resentments and perceptions, including invasive British-style social reforms, harsh land taxes, and summary treatment of some rich landowners and princes, the rebellion rocked many regions of northern and central India and shook the foundations of Company rule. Although the rebellion was suppressed by 1858, it led to the dissolution of the East India Company and
5054-591: The Indus Valley Civilisation , the first urban culture in South Asia, which flourished during 2500–1900 BCE in Pakistan and western India. Centred around cities such as Mohenjo-daro , Harappa , Dholavira , and Kalibangan , and relying on varied forms of subsistence, the civilisation engaged robustly in crafts production and wide-ranging trade. During the period 2000–500 BCE , many regions of
5187-681: The Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of the Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains
5320-654: The Pallavas from farther south, who in turn were opposed by the Pandyas and the Cholas from still farther south. No ruler of this period was able to create an empire and consistently control lands much beyond their core region. During this time, pastoral peoples, whose land had been cleared to make way for the growing agricultural economy, were accommodated within caste society, as were new non-traditional ruling classes. The caste system consequently began to show regional differences. In
5453-602: The Republic of India , is a country in South Asia . It is the seventh-largest country in the world by area and the most populous country . Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China , Nepal , and Bhutan to the north; and Bangladesh and Myanmar to
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5586-537: The South Asia Satellite , a gift from India to its neighbouring SAARC countries. In October 2018, India signed a US$ 5.43 billion (over ₹ 400 billion) agreement with Russia to procure four S-400 Triumf surface-to-air missile defence systems, Russia's most advanced long-range missile defence system. According to the International Monetary Fund (IMF), the Indian economy in 2024
5719-696: The South Asian Association for Regional Cooperation and the World Trade Organization . The nation has provided 100,000 military and police personnel to serve in 35 UN peacekeeping operations across four continents. It participates in the East Asia Summit , the G8+5 , and other multilateral forums. India has close economic ties with countries in South America , Asia, and Africa; it pursues
5852-406: The Thar Desert , the eastern spread of which is checked by the Aravallis. The remaining Indian Plate survives as peninsular India , the oldest and geologically most stable part of India. It extends as far north as the Satpura and Vindhya ranges in central India. These parallel chains run from the Arabian Sea coast in Gujarat in the west to the coal-rich Chota Nagpur Plateau in Jharkhand in
5985-410: The Undivided Goalpara district area in 1822. In 1866, Garo Hills was separated from the Goalpara district area, and in the same year a new district named "Greater Koch Behar " was created and the remaining portion of Goalpara district was withdrawn from Rangpur and tagged with Koch Behar. In 1874 a new province, the Assam Valley Province, was created by the British government, and Goalpara district area
6118-424: The United Kingdom , and Canada . The President of India is the supreme commander of the nation's armed forces; with 1.45 million active troops, they compose the world's second-largest military . It comprises the Indian Army , the Indian Navy , the Indian Air Force , and the Indian Coast Guard . The official Indian defence budget for 2011 was US$ 36.03 billion, or 1.83% of GDP. Defence expenditure
6251-437: The Wildlife Protection Act and Project Tiger to safeguard crucial wilderness; the Forest Conservation Act was enacted in 1980 and amendments added in 1988. India hosts more than five hundred wildlife sanctuaries and eighteen biosphere reserves , four of which are part of the World Network of Biosphere Reserves ; seventy-five wetlands are registered under the Ramsar Convention . A parliamentary republic with
6384-441: The direct administration of India by the British government. Proclaiming a unitary state and a gradual but limited British-style parliamentary system, the new rulers also protected princes and landed gentry as a feudal safeguard against future unrest. In the decades following, public life gradually emerged all over India, leading eventually to the founding of the Indian National Congress in 1885. The rush of technology and
6517-405: The temperate coniferous forest of the Himalayas , the moist deciduous sal forest of eastern India, and the dry deciduous teak forest of central and southern India. Open forest , whose canopy density is between 10% and 40%, occupies 9.26% of India's land area. India has two natural zones of thorn forest , one in the Deccan Plateau , immediately east of the Western Ghats, and the other in
6650-403: The "hot" season of March and April, the weather becomes hot and thunderstorm rainfalls increase in frequency to prelude the oppressive monsoon season from June to September where heavy rainfall occurs every afternoon. Bongaigaon town has a population of 67,322 as per the 2011 census. There are both private and government hospitals in Bongaigaon including: India India , officially
6783-400: The 10th century, Muslim Central Asian nomadic clans, using swift-horse cavalry and raising vast armies united by ethnicity and religion, repeatedly overran South Asia's north-western plains, leading eventually to the establishment of the Islamic Delhi Sultanate in 1206. The sultanate was to control much of North India and to make many forays into South India. Although at first disruptive for
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#17328550603646916-526: The 17th century was a factor in India's economic expansion, resulting in greater patronage of painting , literary forms, textiles, and architecture . Newly coherent social groups in northern and western India, such as the Marathas , the Rajputs , and the Sikhs , gained military and governing ambitions during Mughal rule, which, through collaboration or adversity, gave them both recognition and military experience. Expanding commerce during Mughal rule gave rise to new Indian commercial and political elites along
7049-653: The 1820s. India was then no longer exporting manufactured goods as it long had, but was instead supplying the British Empire with raw materials. Many historians consider this to be the onset of India's colonial period. By this time, with its economic power severely curtailed by the British parliament and having effectively been made an arm of British administration, the East India Company began more consciously to enter non-economic arenas, including education, social reform, and culture. Historians consider India's modern age to have begun sometime between 1848 and 1885. The appointment in 1848 of Lord Dalhousie as Governor General of
7182-596: The 1980s and the collaboration with Soviet Union for technical know-how, has created a large urban middle class, transformed India into one of the world's fastest-growing economies , and increased its geopolitical clout. Yet, India is also shaped by seemingly unyielding poverty, both rural and urban; by religious and caste-related violence ; by Maoist-inspired Naxalite insurgencies ; and by separatism in Jammu and Kashmir and in Northeast India . It has unresolved territorial disputes with China and with Pakistan . India's sustained democratic freedoms are unique among
7315-473: The 3rd century BCE, the kingdom of Magadha had annexed or reduced other states to emerge as the Maurya Empire . The empire was once thought to have controlled most of the subcontinent except the far south, but its core regions are now thought to have been separated by large autonomous areas. The Mauryan kings are known as much for their empire-building and determined management of public life as for Ashoka 's renunciation of militarism and far-flung advocacy of
7448-633: The 4th and 5th centuries, the Gupta Empire had created a complex system of administration and taxation in the greater Ganges Plain; this system became a model for later Indian kingdoms. Under the Guptas, a renewed Hinduism based on devotion, rather than the management of ritual, began to assert itself. This renewal was reflected in a flowering of sculpture and architecture , which found patrons among an urban elite. Classical Sanskrit literature flowered as well, and Indian science , astronomy , medicine , and mathematics made significant advances. The Indian early medieval age, from 600 to 1200 CE ,
7581-493: The 6th and 7th centuries, the first devotional hymns were created in the Tamil language. They were imitated all over India and led to both the resurgence of Hinduism and the development of all modern languages of the subcontinent . Indian royalty, big and small, and the temples they patronised drew citizens in great numbers to the capital cities, which became economic hubs as well. Temple towns of various sizes began to appear everywhere as India underwent another urbanisation. By
7714-521: The 8th and 9th centuries, the effects were felt in Southeast Asia, as South Indian culture and political systems were exported to lands that became part of modern-day Myanmar , Thailand , Laos , Brunei , Cambodia , Vietnam , Philippines , Malaysia , and Indonesia . Indian merchants, scholars, and sometimes armies were involved in this transmission; Southeast Asians took the initiative as well, with many sojourning in Indian seminaries and translating Buddhist and Hindu texts into their languages. After
7847-433: The Andaman, Nicobar, and Lakshadweep island chains. According to the Indian naval hydrographic charts, the mainland coastline consists of the following: 43% sandy beaches; 11% rocky shores, including cliffs; and 46% mudflats or marshy shores. Major Himalayan-origin rivers that substantially flow through India include the Ganges and the Brahmaputra , both of which drain into the Bay of Bengal . Important tributaries of
7980-468: The BJP became the first political party since 1984 to win a majority and govern without the support of other parties. In the 2019 general election , the BJP was victorious again with majority. In the 2024 general election , the BJP failed to achieve majority and the BJP-led NDA coalition formed the government . Narendra Modi , a former chief minister of Gujarat , is serving as the 14th Prime Minister of India in his third term since May 26, 2014. India
8113-435: The BJP was able to form a successful coalition, the National Democratic Alliance (NDA). Led by Atal Bihari Vajpayee , the NDA became the first non-Congress, coalition government to complete a five-year term. Again in the 2004 Indian general elections , no party won an absolute majority, but the Congress emerged as the largest single party, forming another successful coalition: the United Progressive Alliance (UPA). It had
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#17328550603648246-498: The Buddha is recorded in the Pali canon to have sought enlightenment. Many Indian species have descended from those of Gondwana , the southern supercontinent from which India separated more than 100 million years ago. India's subsequent collision with Eurasia set off a mass exchange of species. However, volcanism and climatic changes later caused the extinction of many endemic Indian forms. Still later, mammals entered India from Asia through two zoogeographic passes flanking
8379-436: The Buddhist dhamma . The Sangam literature of the Tamil language reveals that, between 200 BCE and 200 CE , the southern peninsula was ruled by the Cheras , the Cholas , and the Pandyas , dynasties that traded extensively with the Roman Empire and with West and Southeast Asia . In North India, Hinduism asserted patriarchal control within the family, leading to increased subordination of women. By
8512-627: The Congress saw a change in leadership in 1984, when Indira Gandhi was assassinated ; she was succeeded by her son Rajiv Gandhi , who won an easy victory in the general elections later that year . The Congress was voted out again in 1989 when a National Front coalition, led by the newly formed Janata Dal in alliance with the Left Front , won the elections; that government too proved relatively short-lived, lasting just under two years. There were two prime ministers during this period; V.P. Singh and Chandra Shekhar . Elections were held again in 1991 ; no party won an absolute majority. The Congress, as
8645-424: The East India Company set the stage for changes essential to a modern state. These included the consolidation and demarcation of sovereignty, the surveillance of the population, and the education of citizens. Technological changes—among them, railways, canals, and the telegraph—were introduced not long after their introduction in Europe . However, disaffection with the company also grew during this time and set off
8778-418: The Ganges include the Yamuna and the Kosi ; the latter's extremely low gradient, caused by long-term silt deposition, leads to severe floods and course changes. Major peninsular rivers, whose steeper gradients prevent their waters from flooding, include the Godavari , the Mahanadi , the Kaveri , and the Krishna , which also drain into the Bay of Bengal; and the Narmada and the Tapti , which drain into
8911-405: The Goalpara and Kokrajhar Districts with its headquarters located at Bongaigaon. On 29 September 1989, the creation of Bongaigaon District was declared by the Government of Assam with its headquarters at Bongaigaon. In June 2022, heavy floods in Assam affected the residents of Bongaigaon. The Bongaigaon Town Committee was first constituted in the year 1961 and was upgraded to a Municipal Board in
9044-438: The Himalayas and the Thar Desert, both of which drive the economically and culturally pivotal summer and winter monsoons . The Himalayas prevent cold Central Asian katabatic winds from blowing in, keeping the bulk of the Indian subcontinent warmer than most locations at similar latitudes. The Thar Desert plays a crucial role in attracting the moisture-laden south-west summer monsoon winds that, between June and October, provide
9177-399: The Himalayas. This had the effect of lowering endemism among India's mammals, which stands at 12.6%, contrasting with 45.8% among reptiles and 55.8% among amphibians. Among endemics are the vulnerable hooded leaf monkey and the threatened Beddome's toad of the Western Ghats. India contains 172 IUCN -designated threatened animal species , or 2.9% of endangered forms. These include
9310-401: The Indian elites, the sultanate largely left its vast non-Muslim subject population to its own laws and customs. By repeatedly repulsing Mongol raiders in the 13th century, the sultanate saved India from the devastation visited on West and Central Asia, setting the scene for centuries of migration of fleeing soldiers, learned men, mystics, traders, artists, and artisans from that region into
9443-408: The Mughals united their far-flung realms through loyalty, expressed through a Persianised culture, to an emperor who had near-divine status. The Mughal state's economic policies, deriving most revenues from agriculture and mandating that taxes be paid in the well-regulated silver currency, caused peasants and artisans to enter larger markets. The relative peace maintained by the empire during much of
9576-598: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding
9709-543: The advent of independence in 1947, but tempered by the partition of India into two states: India and Pakistan. Vital to India's self-image as an independent nation was its constitution, completed in 1950, which put in place a secular and democratic republic. Per the London Declaration , India retained its membership of the Commonwealth , becoming the first republic within it. Economic liberalisation, which began in
9842-512: The agricultural sector 18.1%. India's foreign exchange remittances of US$ 100 billion in 2022, highest in the world, were contributed to its economy by 32 million Indians working in foreign countries. Major agricultural products include rice, wheat, oilseed, cotton, jute, tea, sugarcane, and potatoes. Major industries include textiles, telecommunications, chemicals, pharmaceuticals, biotechnology, food processing, steel, transport equipment, cement, mining, petroleum, machinery, and software. In 2006,
9975-488: The banking sector, 44th in business sophistication, and 39th in innovation, ahead of several advanced economies. With seven of the world's top 15 information technology outsourcing companies based in India, as of 2009 , the country is viewed as the second-most favourable outsourcing destination after the United States. India is ranked 39th in the Global Innovation Index in 2024. As of 2023 , India's consumer market
10108-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over
10241-641: The beginnings of a nonviolent movement of non-co-operation, of which Mahatma Gandhi would become the leader and enduring symbol. During the 1930s, slow legislative reform was enacted by the British; the Indian National Congress won victories in the resulting elections. The next decade was beset with crises: Indian participation in World War ;II , the Congress's final push for non-co-operation, and an upsurge of Muslim nationalism . All were capped by
10374-484: The coasts of southern and eastern India. As the empire disintegrated, many among these elites were able to seek and control their own affairs. By the early 18th century, with the lines between commercial and political dominance being increasingly blurred, a number of European trading companies, including the English East India Company , had established coastal outposts. The East India Company's control of
10507-452: The commercialisation of agriculture in the second half of the 19th century was marked by economic setbacks, and many small farmers became dependent on the whims of far-away markets. There was an increase in the number of large-scale famines , and, despite the risks of infrastructure development borne by Indian taxpayers, little industrial employment was generated for Indians. There were also salutary effects: commercial cropping, especially in
10640-625: The contribution of petrochemical and engineering goods to total exports grew from 14% to 42%. India was the world's second-largest textile exporter after China in the 2013 calendar year. Averaging an economic growth rate of 7.5% for several years prior to 2007, India has more than doubled its hourly wage rates during the first decade of the 21st century. Some 431 million Indians have left poverty since 1985; India's middle classes are projected to number around 580 million by 2030. Though ranking 68th in global competitiveness , as of 2010 , India ranks 17th in financial market sophistication, 24th in
10773-626: The cost of increasing economic inequality. India is a nuclear-weapon state , which ranks high in military expenditure . It has disputes over Kashmir with its neighbours, Pakistan and China, unresolved since the mid-20th century. Among the socio-economic challenges India faces are gender inequality , child malnutrition , and rising levels of air pollution . India's land is megadiverse , with four biodiversity hotspots . Its forest cover comprises 21.7% of its area. India's wildlife , which has traditionally been viewed with tolerance in India's culture ,
10906-562: The design and implementation of Vikrant -class aircraft carriers and Arihant -class nuclear submarines . Since the end of the Cold War , India has increased its economic, strategic, and military co-operation with the United States and the European Union . In 2008, a civilian nuclear agreement was signed between India and the United States. Although India possessed nuclear weapons at
11039-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through
11172-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach
11305-692: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function
11438-507: The early 16th century, northern India, then under mainly Muslim rulers, fell again to the superior mobility and firepower of a new generation of Central Asian warriors. The resulting Mughal Empire did not stamp out the local societies it came to rule. Instead, it balanced and pacified them through new administrative practices and diverse and inclusive ruling elites, leading to more systematic, centralised, and uniform rule. Eschewing tribal bonds and Islamic identity, especially under Akbar ,
11571-520: The early mediaeval era, Christianity , Islam , Judaism , and Zoroastrianism became established on India's southern and western coasts. Muslim armies from Central Asia intermittently overran India's northern plains, eventually founding the Delhi Sultanate and drawing northern India into the cosmopolitan networks of mediaeval Islam . In the 15th century, the Vijayanagara Empire created
11704-715: The east. To the south, the remaining peninsular landmass, the Deccan Plateau , is flanked on the west and east by coastal ranges known as the Western and Eastern Ghats ; the plateau contains the country's oldest rock formations, some over one billion years old. Constituted in such fashion, India lies to the north of the equator between 6° 44′ and 35° 30′ north latitude and 68° 7′ and 97° 25′ east longitude. India's coastline measures 7,517 kilometres (4,700 mi) in length; of this distance, 5,423 kilometres (3,400 mi) belong to peninsular India and 2,094 kilometres (1,300 mi) to
11837-597: The east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives ; its Andaman and Nicobar Islands share a maritime border with Thailand , Myanmar, and Indonesia . Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago. Their long occupation, initially in varying forms of isolation as hunter-gatherers, has made the region highly diverse, second only to Africa in human genetic diversity . Settled life emerged on
11970-773: The eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ), the Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain
12103-513: The endangered Bengal tiger and the Ganges river dolphin . Critically endangered species include the gharial , a crocodilian ; the great Indian bustard ; and the Indian white-rumped vulture , which has become nearly extinct by having ingested the carrion of diclofenac -treated cattle. Before they were extensively used for agriculture and cleared for human settlement, the thorn forests of Punjab were mingled at intervals with open grasslands that were grazed by large herds of blackbuck preyed on by
12236-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by
12369-744: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near
12502-494: The largest single party, was able to form a minority government led by P. V. Narasimha Rao . A two-year period of political turmoil followed the general election of 1996 . Several short-lived alliances shared power at the centre. The BJP formed a government briefly in 1996; it was followed by two comparatively long-lasting United Front coalitions, which depended on external support. There were two prime ministers during this period; H.D. Deve Gowda and I.K. Gujral . In 1998 ,
12635-474: The life of its exemplar, Mahavira . Buddhism , based on the teachings of Gautama Buddha , attracted followers from all social classes excepting the middle class; chronicling the life of the Buddha was central to the beginnings of recorded history in India. In an age of increasing urban wealth, both religions held up renunciation as an ideal, and both established long-lasting monastic traditions. Politically, by
12768-516: The loose-knit Maurya and Gupta Empires based in the Ganges Basin . Their collective era was suffused with wide-ranging creativity, but also marked by the declining status of women, and the incorporation of untouchability into an organised system of belief. In South India , the Middle kingdoms exported Dravidian-languages scripts and religious cultures to the kingdoms of Southeast Asia . In
12901-467: The majority of India's rainfall. Four major climatic groupings predominate in India: tropical wet , tropical dry , subtropical humid , and montane . Temperatures in India have risen by 0.7 °C (1.3 °F) between 1901 and 2018. Climate change in India is often thought to be the cause. The retreat of Himalayan glaciers has adversely affected the flow rate of the major Himalayan rivers, including
13034-506: The most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into
13167-420: The nation to liberalise its economy ; since then, it has moved increasingly towards a free-market system by emphasising both foreign trade and direct investment inflows. India has been a member of World Trade Organization since 1 January 1995. The 522-million-worker Indian labour force is the world's second largest , as of 2017 . The service sector makes up 55.6% of GDP, the industrial sector 26.3% and
13300-445: The newly canalled Punjab, led to increased food production for internal consumption. The railway network provided critical famine relief, notably reduced the cost of moving goods, and helped nascent Indian-owned industry. After World War I , in which approximately one million Indians served , a new period began. It was marked by British reforms but also repressive legislation , by more strident Indian calls for self-rule, and by
13433-532: The proportion of the area of a forest covered by its tree canopy . Very dense forest , whose canopy density is greater than 70%, occupies 3.02% of India's land area. It predominates in the tropical moist forest of the Andaman Islands , the Western Ghats , and Northeast India . Moderately dense forest , whose canopy density is between 40% and 70%, occupies 9.39% of India's land area. It predominates in
13566-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show
13699-625: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine
13832-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into
13965-544: The seas, greater resources, and more advanced military training and technology led it to increasingly assert its military strength and caused it to become attractive to a portion of the Indian elite; these factors were crucial in allowing the company to gain control over the Bengal region by 1765 and sideline the other European companies. Its further access to the riches of Bengal and the subsequent increased strength and size of its army enabled it to annex or subdue most of India by
14098-463: The share of external trade in India's GDP stood at 24%, up from 6% in 1985. In 2008, India's share of world trade was 1.7%; In 2021, India was the world's ninth-largest importer and the sixteenth-largest exporter . Major exports include petroleum products, textile goods, jewellery, software, engineering goods, chemicals, and manufactured leather goods. Major imports include crude oil, machinery, gems, fertiliser, and chemicals. Between 2001 and 2011,
14231-517: The southern supercontinent Gondwana , began a north-eastward drift caused by seafloor spreading to its south-west, and later, south and south-east. Simultaneously, the vast Tethyan oceanic crust , to its northeast, began to subduct under the Eurasian Plate . These dual processes, driven by convection in the Earth's mantle , both created the Indian Ocean and caused the Indian continental crust eventually to under-thrust Eurasia and to uplift
14364-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from
14497-416: The subcontinent from the north-west. The caste system , which created a hierarchy of priests, warriors, and free peasants, but which excluded indigenous peoples by labelling their occupations impure, arose during this period. On the Deccan Plateau , archaeological evidence from this period suggests the existence of a chiefdom stage of political organisation. In South India , a progression to sedentary life
14630-504: The subcontinent in the western margins of the Indus river basin 9,000 years ago, evolving gradually into the Indus Valley Civilisation of the third millennium BCE. By at least 1200 BCE , an archaic form of Sanskrit , an Indo-European language , had diffused into India from the northwest. Its evidence today is found in the hymns of the Rigveda . Preserved by an oral tradition that
14763-515: The subcontinent transitioned from the Chalcolithic cultures to the Iron Age ones. The Vedas , the oldest scriptures associated with Hinduism , were composed during this period, and historians have analysed these to posit a Vedic culture in the Punjab region and the upper Gangetic Plain . Most historians also consider this period to have encompassed several waves of Indo-Aryan migration into
14896-441: The subcontinent, thereby creating a syncretic Indo-Islamic culture in the north. The sultanate's raiding and weakening of the regional kingdoms of South India paved the way for the indigenous Vijayanagara Empire . Embracing a strong Shaivite tradition and building upon the military technology of the sultanate, the empire came to control much of peninsular India, and was to influence South Indian society for long afterwards. In
15029-414: The support of left-leaning parties and MPs who opposed the BJP. The UPA returned to power in the 2009 general election with increased numbers, and it no longer required external support from India's communist parties . That year, Manmohan Singh became the first prime minister since Jawaharlal Nehru in 1957 and 1962 to be re-elected to a consecutive five-year term. In the 2014 general election ,
15162-640: The time and was not a party to the Nuclear Non-Proliferation Treaty, it received waivers from the International Atomic Energy Agency and the Nuclear Suppliers Group , ending earlier restrictions on India's nuclear technology and commerce. As a consequence, India became the sixth de facto nuclear weapons state. India subsequently signed co-operation agreements involving civilian nuclear energy with Russia, France,
15295-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to
15428-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over
15561-513: The two nations have gone to war four times: in 1947 , 1965 , 1971 , and 1999 . Three of these wars were fought over the disputed territory of Kashmir , while the third, the 1971 war, followed from India's support for the independence of Bangladesh . In the late 1980s, the Indian military twice intervened abroad at the invitation of the host country: a peace-keeping operation in Sri Lanka between 1987 and 1990; and an armed intervention to prevent
15694-611: The union territories of Jammu and Kashmir , Puducherry and the National Capital Territory of Delhi , have elected legislatures and governments following the Westminster system of governance. The remaining five union territories are directly ruled by the central government through appointed administrators. In 1956, under the States Reorganisation Act , states were reorganised on a linguistic basis. There are over
15827-488: The western part of the Indo-Gangetic plain, now turned into rich agricultural land by irrigation, its features no longer visible. Among the Indian subcontinent's notable indigenous trees are the astringent Azadirachta indica , or neem , which is widely used in rural Indian herbal medicine , and the luxuriant Ficus religiosa , or peepul , which is displayed on the ancient seals of Mohenjo-daro , and under which
15960-444: The world in nominal per capita income and 125th in per capita income adjusted for purchasing power parity (PPP)—the vast majority of Indians fall into the low-income group. Until 1991, all Indian governments followed protectionist policies that were influenced by socialist economics. Widespread state intervention and regulation largely walled the economy off from the outside world. An acute balance of payments crisis in 1991 forced
16093-437: The world's most populous democracy since the time of its independence in 1947. It is a pluralistic , multilingual and multi-ethnic society . India's nominal per capita income increased from US$ 64 annually in 1951 to US$ 2,601 in 2022, and its literacy rate from 16.6% to 74%. During the same time, its population grew from 361 million to almost 1.4 billion, and India became the most populous country in 2023. From being
16226-522: The world's newer nations; however, in spite of its recent economic successes, freedom from want for its disadvantaged population remains a goal yet to be achieved. India accounts for the bulk of the Indian subcontinent, lying atop the Indian tectonic plate , a part of the Indo-Australian Plate . India's defining geological processes began 75 million years ago when the Indian Plate, then part of
16359-541: The year 1977. Presently the Municipal Area consists of 25 wards covering an area of 14.31 sq m. Bongaigaon is part of Barpeta (Lok Sabha constituency) . Phani Bhusan Choudhury is the current M.L.A. of the Bongaigaon constituency. Bongaigaon is located at 26°28′37″N 90°33′30″E / 26.47694°N 90.55833°E / 26.47694; 90.55833 . It has an average altitude of 62.6 metres. The town
16492-503: Was resolutely vigilant , the Rigveda records the dawning of Hinduism in India. The Dravidian languages of India were supplanted in the northern and western regions. By 400 BCE , stratification and exclusion by caste had emerged within Hinduism, and Buddhism and Jainism had arisen, proclaiming social orders unlinked to heredity. Early political consolidations gave rise to
16625-457: Was amended in 1971 to "a sovereign, socialist , secular , democratic republic". India's form of government, traditionally described as "quasi-federal" with a strong centre and weak states, has grown increasingly federal since the late 1990s as a result of political, economic, and social changes. The Government of India comprises three branches: India is a federal union comprising 28 states and 8 union territories . All states, as well as
16758-587: Was first created in 1822 by David Scott, an employee of the East India Company and the first Commissioner of newly created North east Rangpur district headquarters at Rangpur town (now in Bangladesh ). The newly created Goalpara district was connected with North-east Rangpur district for administration. The area, formerly part of the Bijni Kingdom, which included the undivided Garo Hills district constituted
16891-426: Was nominally worth $ 3.94 trillion; it was the fifth-largest economy by market exchange rates and is, at around $ 15.0 trillion, the third-largest by purchasing power parity (PPP). With its average annual GDP growth rate of 5.8% over the past two decades, and reaching 6.1% during 2011–2012, India is one of the world's fastest-growing economies . However, due to its low GDP per capita—which ranks 136th in
17024-507: Was noted for nonviolent resistance and became the major factor in ending British rule. In 1947, the British Indian Empire was partitioned into two independent dominions , a Hindu-majority dominion of India and a Muslim-majority dominion of Pakistan , amid large-scale loss of life and an unprecedented migration. India has been a federal republic since 1950, governed through a democratic parliamentary system , and has been
17157-514: Was pegged at US$ 70.12 billion for fiscal year 2022–23 and, increased 9.8% than previous fiscal year. India is the world's second-largest arms importer; between 2016 and 2020, it accounted for 9.5% of the total global arms imports. Much of the military expenditure was focused on defence against Pakistan and countering growing Chinese influence in the Indian Ocean. In May 2017, the Indian Space Research Organisation launched
17290-532: Was succeeded, after his own unexpected death in 1966, by Nehru's daughter Indira Gandhi , who went on to lead the Congress to election victories in 1967 and 1971 . Following public discontent with the state of emergency she declared in 1975, the Congress was voted out of power in 1977 ; the then-new Janata Party , which had opposed the emergency, was voted in. Its government lasted just over two years. There were two prime ministers during this period; Morarji Desai and Charan Singh . Voted back into power in 1980,
17423-411: Was the world's fifth largest . Driven by growth, India's nominal GDP per capita increased steadily from US$ 308 in 1991, when economic liberalisation began, to US$ 1,380 in 2010, to an estimated US$ 2,731 in 2024. It is expected to grow to US$ 3,264 by 2026. However, it has remained lower than those of other Asian developing countries such as Indonesia, Malaysia, Philippines, Sri Lanka, and Thailand, and
17556-894: Was used widely since the era of the Mughal Empire . The meaning of Hindustan has varied, referring to a region encompassing the northern Indian subcontinent (present-day northern India and Pakistan ) or to India in its near entirety. By 55,000 years ago, the first modern humans, or Homo sapiens , had arrived on the Indian subcontinent from Africa, where they had earlier evolved. The earliest known modern human remains in South Asia date to about 30,000 years ago. After 6500 BCE , evidence for domestication of food crops and animals, construction of permanent structures, and storage of agricultural surplus appeared in Mehrgarh and other sites in Balochistan, Pakistan . These gradually developed into
17689-500: Was withdrawn from Koch Behar and tagged with Assam Province, which continues until today. The original Goalpara district is now split into five districts: Goalpara , Dhubri , Kokrajhar , Bongaigoan , and Chirang . On 14 March 1989, bombs from separatist tribal militants exploded in Bongaigaon, killing 17 and wounding at least 48. The government of Assam decided in 1989 to create a new district of Bongaigaon, carving out some areas of
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