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108-580: The Yalgorup Important Bird Area comprises a group of parallel, linear wetlands , with a collective area of 59 km, on the Swan Coastal Plain of south-west Western Australia between the cities of Mandurah and Bunbury . It is an important site for waterbirds . The site encompasses the wetlands of the Yalgorup National Park ; it lies just to the south of the Peel-Harvey IBA but

216-711: A sink or a source of carbon, depending on the specific wetland. If they function as a carbon sink, they can help with climate change mitigation . However, wetlands can also be a significant source of methane emissions due to anaerobic decomposition of soaked detritus , and some are also emitters of nitrous oxide . Humans are disturbing and damaging wetlands in many ways, including oil and gas extraction , building infrastructure, overgrazing of livestock , overfishing , alteration of wetlands including dredging and draining, nutrient pollution , and water pollution . Wetlands are more threatened by environmental degradation than any other ecosystem on Earth, according to

324-629: A water sharing dispute arose between India and East Pakistan (now Bangladesh) after India declared its intention to build the Farakka Barrage. The original purpose of the barrage, which was completed in 1975, was to divert up to 1,100 m /s (39,000 cu ft/s) of water from the Ganges to the Bhagirathi-Hooghly distributary to restore navigability at the Port of Kolkata . It was assumed that during

432-402: A frequency and duration to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally included swamps, marshes, bogs, and similar areas.' For each of these definitions and others, regardless of the purpose, hydrology is emphasized (shallow waters, water-logged soils). The soil characteristics and

540-642: A new channel. This new main channel of the Brahmaputra is called the Jamuna River. It flows south to join the Ganges-Padma. During ancient times, the main flow of the Brahmaputra was more easterly, passing by the city of Mymensingh and joining the Meghna River. Today this channel is a small distributary but retains the name Brahmaputra, sometimes Old Brahmaputra. The site of the old Brahmaputra-Meghna confluence, in

648-1248: A polar climate, wetland temperatures can be as low as −50 °C (−58 °F). Peatlands in arctic and subarctic regions insulate the permafrost , thus delaying or preventing its thawing during summer, as well as inducing its formation. The amount of precipitation a wetland receives varies widely according to its area. Wetlands in Wales , Scotland , and western Ireland typically receive about 1,500 mm (59 in) per year. In some places in Southeast Asia , where heavy rains occur, they can receive up to 10,000 mm (390 in). In some drier regions, wetlands exist where as little as 180 mm (7.1 in) precipitation occurs each year. Temporal variation: Surface flow may occur in some segments, with subsurface flow in other segments. Wetlands vary widely due to local and regional differences in topography , hydrology , vegetation , and other factors, including human involvement. Other important factors include fertility, natural disturbance, competition, herbivory , burial and salinity. When peat accumulates, bogs and fens arise. The most important factor producing wetlands

756-540: A portion of the overall water cycle, which also includes atmospheric water (precipitation) and groundwater . Many wetlands are directly linked to groundwater and they can be a crucial regulator of both the quantity and quality of water found below the ground. Wetlands that have permeable substrates like limestone or occur in areas with highly variable and fluctuating water tables have especially important roles in groundwater replenishment or water recharge. Substrates that are porous allow water to filter down through

864-1475: A protective barrier to coastal shoreline. Mangroves stabilize the coastal zone from the interior and will migrate with the shoreline to remain adjacent to the boundary of the water. The main conservation benefit these systems have against storms and storm surges is the ability to reduce the speed and height of waves and floodwaters. Ganges Uttar Pradesh : Bijnor , Fatehgarh , Kannauj , Hardoi , Bithoor , Kanpur , Lucknow ( Gomti tributary), Prayagraj , Mirzapur , Varanasi , Ghazipur , Ballia , Kasganj , Farrukhabad , Narora Bihar : Begusarai , Bhagalpur , Patna , Vaishali , Munger , Khagaria , Katihar Jharkhand : Sahibganj West Bengal : Murshidabad , Palashi , Nabadwip , Shantipur , Kolkata , Serampore , Chinsurah , Baranagar , Diamond Harbour , Haldia , Budge Budge , Howrah , Uluberia , Barrackpore Delhi : ( Yamuna ) tributary Rajshahi Division : Rajshahi , Pabna , Ishwardi Dhaka Division : Dhaka , Narayanganj , Gazipur , Munshiganj , Faridpur Chittagong Division : Chandpur , Noakhali 43,900 m /s (1,550,000 cu ft/s) The Ganges ( / ˈ ɡ æ n dʒ iː z / GAN -jeez ; in India: Ganga , / ˈ ɡ ʌ ŋ ɡ ɑː / GUNG -ah ; in Bangladesh: Padma , / ˈ p ʌ d m ə / PUD -mə )

972-410: A religious iconoclast himself, asked for a handful of his ashes to be thrown into the Ganges. "The Ganga", he wrote in his will, "is the river of India, beloved of her people, round which are intertwined her racial memories, her hopes and fears, her songs of triumph, her victories and her defeats. She has been a symbol of India's age-long culture and civilization, ever-changing, ever-flowing, and yet ever

1080-509: A sacred river to Hindus along every fragment of its length. All along its course, Hindus bathe in its waters, paying homage to their ancestors and their gods by cupping the water in their hands, lifting it, and letting it fall back into the river; they offer flowers and rose petals and float shallow clay dishes filled with oil and lit with wicks (diyas). On the journey back home from the Ganges, they carry small quantities of river water with them for use in rituals; Ganga Jal, literally "the water of

1188-435: A sage, Kapila , whose intense meditation has been disturbed by the sixty thousand sons of King Sagara . Livid at being disturbed, Kapila sears them with his angry gaze, reduces them to ashes, and dispatches them to the netherworld. Only the waters of the Ganges, then in heaven, can bring the dead sons their salvation. A descendant of these sons, King Bhagiratha , anxious to restore his ancestors, undertakes rigorous penance and

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1296-422: A strong influence on wetland water chemistry, particularly in coastal wetlands and in arid and semiarid regions with large precipitation deficits. Natural salinity is regulated by interactions between ground and surface water, which may be influenced by human activity. Carbon is the major nutrient cycled within wetlands. Most nutrients, such as sulfur , phosphorus , carbon , and nitrogen are found within

1404-410: A unique kind of wetland where lush plant growth and slow decay of dead plants (under anoxic conditions) results in organic peat accumulating; bogs, fens, and mires are different names for peatlands. Variations of names for wetland systems: Some wetlands have localized names unique to a region such as the prairie potholes of North America's northern plain, pocosins , Carolina bays and baygalls of

1512-508: A wetland is "an ecosystem that arises when inundation by water produces soils dominated by anaerobic and aerobic processes, which, in turn, forces the biota, particularly rooted plants, to adapt to flooding". Sometimes a precise legal definition of a wetland is required. The definition used for regulation by the United States government is: 'The term "wetlands" means those areas that are inundated or saturated by surface or ground water at

1620-422: A wetland system includes its plants ( flora ) and animals ( fauna ) and microbes (bacteria, fungi). The most important factor is the wetland's duration of flooding. Other important factors include fertility and salinity of the water or soils. The chemistry of water flowing into wetlands depends on the source of water, the geological material that it flows through and the nutrients discharged from organic matter in

1728-403: A wetland) affects hydro-periods (temporal fluctuations in water levels) by controlling the water balance and water storage within a wetland. Landscape characteristics control wetland hydrology and water chemistry. The O 2 and CO 2 concentrations of water depend upon temperature , atmospheric pressure and mixing with the air (from winds or water flows). Water chemistry within wetlands

1836-558: A whole. To replace these wetland ecosystem services , enormous amounts of money would need to be spent on water purification plants, dams, levees, and other hard infrastructure, and many of the services are impossible to replace. Floodplains and closed-depression wetlands can provide the functions of storage reservoirs and flood protection. The wetland system of floodplains is formed from major rivers downstream from their headwaters . "The floodplains of major rivers act as natural storage reservoirs, enabling excess water to spread out over

1944-577: A wide area, which reduces its depth and speed. Wetlands close to the headwaters of streams and rivers can slow down rainwater runoff and spring snowmelt so that it does not run straight off the land into water courses. This can help prevent sudden, damaging floods downstream." Notable river systems that produce wide floodplains include the Nile River , the Niger river inland delta, the Zambezi River flood plain,

2052-550: Is 625 km (388 mi) long, with a drainage basin of 25,820 km (9,970 sq mi). The Hooghly River empties into the Bay of Bengal near Sagar Island . Between Malda and the Bay of Bengal, the Hooghly river passes the towns and cities of Murshidabad , Nabadwip , Kolkata and Howrah . After entering Bangladesh, the main branch of the Ganges river is known as the Padma . The Padma

2160-580: Is a trans-boundary river of Asia which flows through India and Bangladesh . The 2,525 km (1,569 mi)-long river rises in the western Himalayas in the Indian state of Uttarakhand . It flows south and east through the Gangetic plain of North India , receiving the right-bank tributary, the Yamuna , which also rises in the western Indian Himalayas, and several left-bank tributaries from Nepal that account for

2268-783: Is about 1,080,000 km (420,000 sq mi), of which 861,000 km (332,000 sq mi) is in India (about 80%), 140,000 km (54,000 sq mi) in Nepal (13%), 46,000 km (18,000 sq mi) in Bangladesh (4%), and 33,000 km (13,000 sq mi) in China (3%). Sometimes the Ganges and Brahmaputra–Meghna drainage basins are combined for a total of about 1,600,000 km (620,000 sq mi) or 1,621,000 km (626,000 sq mi). The combined Ganges-Brahmaputra-Meghna basin (abbreviated GBM or GMB) drainage basin

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2376-416: Is apparently used by waterbirds as a distinct wetland system. The major wetlands of the site are Lakes Clifton, Preston, Pollard, Yalgorup, Boundary, martins Tank, Hayward and Newnham. The lakes are evaporative salt lakes mainly fed by fresh groundwater and precipitation and vary up to about 4 m in depth. Median annual rainfall in the area is about 880 mm, falling mainly from May to August. Some of

2484-440: Is determined by the pH , salinity , nutrients, conductivity , soil composition, hardness , and the sources of water. Water chemistry varies across landscapes and climatic regions. Wetlands are generally minerotrophic (waters contain dissolved materials from soils) with the exception of ombrotrophic bogs that are fed only by water from precipitation. Because bogs receive most of their water from precipitation and humidity from

2592-720: Is different ways to determine the river's length, its discharge , and the size of its drainage basin . The name Ganges is used for the river between the confluence of the Bhagirathi and Alaknanda rivers, in the Himalayas, and the first bifurcation of the river, near the Farakka Barrage and the India-Bangladesh Border. The length of the Ganges is frequently said to be slightly over 2,600 km (1,600 mi) long, about 2,601 km (1,616 mi), 2,525 km (1,569 mi) or 2,650 km (1,650 mi). In these cases

2700-629: Is either freshwater , brackish or saltwater . The main types of wetland are defined based on the dominant plants and the source of the water. For example, marshes are wetlands dominated by emergent herbaceous vegetation such as reeds , cattails and sedges . Swamps are dominated by woody vegetation such as trees and shrubs (although reed swamps in Europe are dominated by reeds, not trees). Mangrove forest are wetlands with mangroves , halophytic woody plants that have evolved to tolerate salty water . Examples of wetlands classified by

2808-472: Is eventually granted the prize of Ganges's descent from heaven. However, since her turbulent force would also shatter the earth, Bhagiratha persuades Shiva in his abode on Mount Kailash to receive the Ganges in the coils of his tangled hair and break her fall. The Ganges descends, is tamed in Shiva's locks, and arrives in the Himalayas. She is then led by the waiting Bhagiratha down into the plains at Haridwar, across

2916-550: Is home to approximately 140 species of fish, 90 species of amphibians , and also reptiles and mammals , including critically endangered species such as the gharial and South Asian river dolphin . The Ganges is the most sacred river to Hindus . It is worshipped as the goddess Ganga in Hinduism . The Ganges is threatened by severe pollution . This not only poses a danger to humans but also to many species of animals. The levels of fecal coliform bacteria from human waste in

3024-412: Is hydrology, or flooding . The duration of flooding or prolonged soil saturation by groundwater determines whether the resulting wetland has aquatic, marsh or swamp vegetation . Other important factors include soil fertility, natural disturbance, competition, herbivory , burial, and salinity. When peat from dead plants accumulates, bogs and fens develop. Wetland hydrology is associated with

3132-750: Is joined by the Jamuna River , the largest distributary of the Brahmaputra . Further downstream, the Padma joins the Meghna River , the converged flow of Surma-Meghna River System taking on the Meghna's name as it enters the Meghna Estuary, which empties into the Bay of Bengal. Here it forms the 1,430 by 3,000 km (890 by 1,860 mi) Bengal Fan , the world's largest submarine fan , which alone accounts for 10–20% of

3240-516: Is longer than its main outlet via the Meghna River, resulting in a total length of about 2,704 km (1,680 mi), if taken from the source of the Bhagirathi, or 2,321.50 km (1,442.51 mi), if from Haridwar to the Hooghly's mouth. In other cases the length is said to be about 2,304 km (1,432 mi), from the source of the Bhagirathi to the Bangladesh border, where its name changes to Padma . For similar reasons, sources differ over

3348-797: Is spread across Bangladesh, Bhutan , India, Nepal, and China. The Ganges basin ranges from the Himalaya and the Transhimalaya in the north, to the northern slopes of the Vindhya range in the south, from the eastern slopes of the Aravalli in the west to the Chota Nagpur plateau and the Sunderbans delta in the east. A significant portion of the discharge from the Ganges comes from the Himalayan mountain system. Within

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3456-403: Is the high point of the Ganges basin. The other peaks over 8,000m in the basin are Kangchenjunga , Lhotse , Makalu , Cho Oyu , Dhaulagiri , Manaslu , Annapurna and Shishapangma . The Himalayan portion of the basin includes the south-eastern portion of the state of Himachal Pradesh, the entire state of Uttarakhand, the entire country of Nepal and the extreme north-western portion of

3564-451: Is the only place in the world where both crocodiles and alligators coexist. The saltwater crocodile inhabits estuaries and mangroves. Snapping turtles also inhabit wetlands. Birds , particularly waterfowl and waders use wetlands extensively. Mammals of wetlands include numerous small and medium-sized species such as voles , bats , muskrats and platypus in addition to large herbivorous and apex predator species such as

3672-565: Is used in Hindu ritual and is therefore present in all sacred waters. Despite this, nothing is more stirring for a Hindu than a dip in the actual river, which is thought to remit sins, especially at one of the famous tirthas such as Varanasi , Gangotri , Haridwar , or the Triveni Sangam at Prayagraj . The symbolic and religious importance of the Ganges is one of the few things that Hindus, even their skeptics, have agreed upon. Jawaharlal Nehru,

3780-545: Is usually saturated with water". More precisely, wetlands are areas where "water covers the soil , or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season". A patch of land that develops pools of water after a rain storm would not necessarily be considered a "wetland", even though the land is wet. Wetlands have unique characteristics: they are generally distinguished from other water bodies or landforms based on their water level and on

3888-1015: The Bay of Bengal . The Ganges–Brahmaputra–Meghna system is the second-largest river on earth by discharge . The main stem of the Ganges begins at the town of Devprayag , at the confluence of the Alaknanda , which is the source stream in hydrology on account of its greater length, and the Bhagirathi , which is considered the source stream in Hindu mythology . The Ganges is a lifeline to tens of millions of people who live in its basin and depend on it for their daily needs. It has been important historically, with many former provincial or imperial capitals such as Pataliputra , Kannauj , Sonargaon , Dhaka , Bikrampur , Kara , Munger , Kashi , Patna , Hajipur , Kanpur , Delhi , Bhagalpur , Murshidabad , Baharampur , Kampilya , and Kolkata located on its banks or those of its tributaries and connected waterways. The river

3996-651: The Hooghly River . Just before the border with Bangladesh the Farakka Barrage controls the flow of Ganges, diverting some of the water into a feeder canal linked to the Hooghly for the purpose of keeping it relatively silt-free. The Hooghly River is formed by the confluence of the Bhagirathi River and Ajay River at Katwa , and Hooghly has a number of tributaries of its own. The largest is the Damodar River , which

4104-685: The Indo-Gangetic Plain . The Indo-Gangetic Plain is geologically known as a foredeep or foreland basin . Major left-bank tributaries include the Gomti River, Ghaghara River, Gandaki River and Kosi River; major right-bank tributaries include the Yamuna River, Son River, Punpun and Damodar. The hydrology of the Ganges River is very complicated, especially in the Ganges Delta region. One result

4212-504: The Kaimur Range and contributes an average flow of about 187 m /s (6,600 cu ft/s). After the Tamsa, the 625 km (388 mi) long Gomti River joins, flowing south from the Himalayas. The Gomti contributes an average annual flow of about 234 m /s (8,300 cu ft/s). Then the 1,156 km (718 mi) long Ghaghara River (Karnali River), also flowing south from

4320-591: The Mahabharata , in one of its popular ślokas , says, "If only (one) bone of a (deceased) person should touch the water of the Ganges, that person shall dwell honoured in heaven." As if to illustrate this truism, the Kashi Khanda (Varanasi Chapter) of the Skanda Purana recounts the remarkable story of Vahika , a profligate and unrepentant sinner, who is killed by a tiger in the forest. His soul arrives before Yama ,

4428-492: The Millennium Ecosystem Assessment from 2005. Methods exist for assessing wetland ecological health . These methods have contributed to wetland conservation by raising public awareness of the functions that wetlands can provide. Since 1971, work under an international treaty seeks to identify and protect " wetlands of international importance ." A simplified definition of wetland is "an area of land that

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4536-666: The Pantanal in South America, and the Sundarbans in the Ganges - Brahmaputra delta. Wetlands contribute many ecosystem services that benefit people. These include for example water purification , stabilization of shorelines, storm protection and flood control . In addition, wetlands also process and condense carbon (in processes called carbon fixation and sequestration ), and other nutrients and water pollutants . Wetlands can act as

4644-459: The Shraddha rites. Hindus also perform pinda pradana , a rite for the dead, in which balls of rice and sesame seed are offered to the Ganges while the names of the deceased relatives are recited. Every sesame seed in every ball thus offered, according to one story, assures a thousand years of heavenly salvation for each relative. Indeed, the Ganges is so important in the rituals after death that

4752-583: The Vishnupadi , which until now had been circling the cosmic egg. Flowing out of the vault, she plummets down to Indra's heaven, where she is received by Dhruva , once a steadfast worshipper of Vishnu, now fixed in the sky as the Pole star . Next, she streams across the sky forming the Milky Way and arrives on the moon. She then flows down earthwards to Brahma 's realm, a divine lotus atop Mount Meru , whose petals form

4860-444: The atmosphere , their water usually has low mineral ionic composition. In contrast, wetlands fed by groundwater or tides have a higher concentration of dissolved nutrients and minerals. Fen peatlands receive water both from precipitation and ground water in varying amounts so their water chemistry ranges from acidic with low levels of dissolved minerals to alkaline with high accumulation of calcium and magnesium . Salinity has

4968-576: The beavers , coypu , swamp rabbit , Florida panther , jaguar , and moose . Wetlands attract many mammals due to abundant seeds, berries, and other vegetation as food for herbivores, as well as abundant populations of invertebrates, small reptiles and amphibians as prey for predators. Invertebrates of wetlands include aquatic insects such as dragonflies , aquatic bugs and beetles , midges, mosquitos , crustaceans such as crabs, crayfish, shrimps, microcrustaceans, mollusks like clams, mussels, snails and worms. Invertebrates comprise more than half of

5076-484: The 729 km (453 mi) long Kosi River , join from the north flowing from Nepal, contributing about 1,654 m /s (58,400 cu ft/s) and 2,166 m /s (76,500 cu ft/s), respectively. The Kosi is the third largest tributary of the Ganges by discharge, after Ghaghara (Karnali) and Yamuna. The Kosi merges into the Ganges near Kursela in Bihar . Along the way between Prayagraj and Malda , West Bengal ,

5184-712: The Alaknanda, Dhauliganga , Nandakini , Pindar , Mandakini and Bhagirathi. Their confluences, known as the Panch Prayag , are all along the Alaknanda. They are, in downstream order, Vishnuprayag , where the Dhauliganga joins the Alaknanda; Nandprayag , where the Nandakini joins; Karnaprayag , where the Pindar joins; Rudraprayag , where the Mandakini joins; and finally, Devprayag, where

5292-578: The Bhagirathi joins the Alaknanda to form the Ganges. After flowing for 256.90 km (159.63 mi) through its narrow Himalayan valley, the Ganges emerges from the mountains at Rishikesh , then debouches onto the Gangetic Plain at the pilgrimage town of Haridwar . At Haridwar, a headworks diverts some of its water into the Ganges Canal , which irrigates the Doab region of Uttar Pradesh , whereas

5400-583: The Brahmaputra, and the Surma-Meghna river system. In full flood only the Amazon is larger. The Indian subcontinent lies atop the Indian tectonic plate , a minor plate within the Indo-Australian Plate . Its defining geological processes commenced seventy-five million years ago, when, as a part of the southern supercontinent Gondwana , it began a northeastwards drift —lasting fifty million years—across

5508-431: The Ganges flow at Farakka was less than 2,000 m /s (71,000 cu ft/s) then India and Bangladesh would each receive 50% of the water, with each receiving at least 1,000 m /s (35,000 cu ft/s) for alternating ten-day periods. However, within a year the flow at Farakka fell to levels far below the historic average, making it impossible to implement the guaranteed sharing of water. In March 1997, flow of

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5616-401: The Ganges in Bangladesh dropped to its lowest ever, 180 m /s (6,400 cu ft/s). Dry season flows returned to normal levels in the years following, but efforts were made to address the problem. One plan is for another barrage to be built in Bangladesh at Pangsha , west of Dhaka . This barrage would help Bangladesh better utilize its share of the waters of the Ganges. The Ganges is

5724-478: The Ganges river passes the towns of Chunar , Mirzapur , Varanasi , Ghazipur , Ara , Patna , Chapra , Hajipur , Mokama , Begusarai , Munger , Sahibganj , Rajmahal , Bhagalpur , Ballia , Buxar , Simaria , Sultanganj , and Farakka . At Bhagalpur, the river begins to flow south-southeast and at Farakka, it begins its attrition with the branching away of its first distributary , the 408 km (254 mi) long Bhāgirathi-Hooghly , which goes on to become

5832-627: The Ganges". The Ganges is the embodiment of all sacred waters in Hindu mythology . Local rivers are said to be like the Ganges and are sometimes called the local Ganges. The Godavari River of Maharashtra in Western India is called the Ganges of the South or the 'Dakshin Ganga'; the Godavari is the Ganges that was led by the sage Gautama to flow through Central India. The Ganges is invoked whenever water

5940-444: The Ganges, Brahmaputra, and Meghna are given separately, at about 16,650 m /s (588,000 cu ft/s) for the Ganges, about 19,820 m /s (700,000 cu ft/s) for the Brahmaputra, and about 5,100 m /s (180,000 cu ft/s) for the Meghna. The maximum peak discharge of the Ganges, as recorded at Hardinge Bridge in Bangladesh, exceeded 70,000 m /s (2,500,000 cu ft/s). The minimum recorded at

6048-426: The Ganges, and are granted instant salvation. If the death has occurred elsewhere, salvation can be achieved by immersing the ashes in the Ganges. If the ashes have been immersed in another body of water, a relative can still gain salvation for the deceased by journeying to the Ganges, if possible during the lunar "fortnight of the ancestors" in the Hindu calendar month of Ashwin (September or October), and performing

6156-677: The Himalaya, the Ganges basin spreads almost 1,200 km from the Yamuna-Satluj divide along the Simla ridge forming the boundary with the Indus basin in the west to the Singalila Ridge along the Nepal-Sikkim border forming the boundary with the Brahmaputra basin in the east. This section of the Himalaya contains 9 of the 14 highest peaks in the world over 8,000m in height, including Mount Everest which

6264-497: The Himalayas of Tibet through Nepal joins. The Ghaghara (Karnali), with its average annual flow of about 2,991 m /s (105,600 cu ft/s), is the largest tributary of the Ganges by discharge. After the Ghaghara confluence, the Ganges is joined from the south by the 784 km (487 mi) long Son River , which contributes about 1,008 m /s (35,600 cu ft/s). The 814 km (506 mi) long Gandaki River , then

6372-408: The Hindu tradition, she is also considered the vehicle of ascent , from earth to heaven. As the Triloka-patha-gamini , (Sanskrit: triloka = "three worlds", patha = "road", gamini = "one who travels") of the tradition, she flows in heaven , earth , and the netherworld , and, consequently, is a "tirtha" or crossing point of all beings, the living as well as the dead. It is for this reason that

6480-432: The Lord of Death, to be judged for the afterworld. Having no compensating virtue, Vahika's soul is at once dispatched to hell . While this is happening, his body on earth, however, is being picked at by vultures, one of whom flies away with a foot bone. Another bird comes after the vulture, and in fighting him off, the vulture accidentally drops the bone into the Ganges below. Blessed by this event, Vahika, on his way to hell,

6588-451: The Okavango River inland delta, the Kafue River flood plain, the Lake Bangweulu flood plain (Africa), Mississippi River (US), Amazon River (South America), Yangtze River (China), Danube River (Central Europe) and Murray-Darling River (Australia). Groundwater replenishment can be achieved for example by marsh , swamp , and subterranean karst and cave hydrological systems. The surface water visibly seen in wetlands only represents

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6696-405: The Southeastern US, mallines of Argentina, Mediterranean seasonal ponds of Europe and California, turloughs of Ireland, billabongs of Australia, among many others. Wetlands are found throughout the world in different climates. Temperatures vary greatly depending on the location of the wetland. Many of the world's wetlands are in the temperate zones , midway between the North or South Poles and

6804-399: The US, the best known classifications are the Cowardin classification system and the hydrogeomorphic (HGM) classification system. The Cowardin system includes five main types of wetlands: marine (ocean-associated), estuarine (mixed ocean- and river-associated), riverine (within river channels), lacustrine (lake-associated) and palustrine (inland nontidal habitats). Peatlands are

6912-610: The United States' commercial fish and shellfish stocks depend solely on estuaries to survive. Amphibians such as frogs and salamanders need both terrestrial and aquatic habitats in which to reproduce and feed. Because amphibians often inhabit depressional wetlands like prairie potholes and Carolina bays, the connectivity among these isolated wetlands is an important control of regional populations. While tadpoles feed on algae, adult frogs forage on insects. Frogs are sometimes used as an indicator of ecosystem health because their thin skin permits absorption of nutrients and toxins from

7020-429: The bulk of its flow. In West Bengal state, India, a feeder canal taking off from its right bank diverts 50% of its flow southwards, artificially connecting it to the Hooghly River . The Ganges continues into Bangladesh, its name changing to the Padma . It is then joined by the Jamuna , the lower stream of the Brahmaputra , and eventually the Meghna , forming the major estuary of the Ganges Delta , and emptying into

7128-407: The earthly continents. There, the divine waters break up, with one stream, the Bhagirathi, flowing down one petal into Bharatavarsha (India) as the Ganges. It is Shiva , however, among the major deities of the Hindu pantheon, who appears in the most widely known version of the avatarana story. Told and retold in the Ramayana , the Mahabharata and several Puranas , the story begins with

7236-446: The end of the 18th century, the course of the lower Brahmaputra changed dramatically, significantly altering its relationship with the Ganges. In 1787 there was a great flood on the Teesta River , which at the time was a tributary of the Ganges-Padma River. The flood of 1787 caused the Teesta to undergo a sudden change course, an avulsion , shifting east to join the Brahmaputra and causing the Brahmaputra to shift its course south, cutting

7344-517: The equator. In these zones, summers are warm and winters are cold, but temperatures are not extreme. In subtropical zone wetlands, such as along the Gulf of Mexico , average temperatures might be 11 °C (52 °F). Wetlands in the tropics are subjected to much higher temperatures for a large portion of the year. Temperatures for wetlands on the Arabian Peninsula can exceed 50 °C (122 °F) and these habitats would therefore be subject to rapid evaporation. In northeastern Siberia , which has

7452-429: The following areas: According to the Ramsar Convention: The economic worth of the ecosystem services provided to society by intact, naturally functioning wetlands is frequently much greater than the perceived benefits of converting them to 'more valuable' intensive land use – particularly as the profits from unsustainable use often go to relatively few individuals or corporations, rather than being shared by society as

7560-457: The foot of Gangotri Glacier at Gomukh , at an elevation of 4,356 m (14,291 ft) and was mythologically referred to as residing in the matted locks of Shiva ; symbolically Tapovan, which is a meadow of ethereal beauty at the feet of Mount Shivling, just 5 km (3.1 mi) away. Although many small streams comprise the headwaters of the Ganges, the six longest and their five confluences are considered sacred. The six headstreams are

7668-407: The global burial of organic carbon . The Ganges Delta , formed mainly by the large, sediment-laden flows of the Ganges and Brahmaputra rivers, is the world's largest delta, at about 64,000 km (25,000 sq mi). It stretches 400 km (250 mi) along the Bay of Bengal . Only the Amazon and Congo rivers have a greater average discharge than the combined flow of the Ganges,

7776-464: The interface between truly terrestrial ecosystems and aquatic systems, making them inherently different from each other, yet highly dependent on both." In environmental decision-making, there are subsets of definitions that are agreed upon to make regulatory and policy decisions. Under the Ramsar international wetland conservation treaty , wetlands are defined as follows: An ecological definition of

7884-462: The known animal species in wetlands, and are considered the primary food web link between plants and higher animals (such as fish and birds). Depending on a wetland's geographic and topographic location, the functions it performs can support multiple ecosystem services , values, or benefits. United Nations Millennium Ecosystem Assessment and Ramsar Convention described wetlands as a whole to be of biosphere significance and societal importance in

7992-535: The lakes have a fringe by samphire , rushes and sedges , beyond which is a zone of paperbarks , with saltwater paperbark and red-eyed wattle around the hypersaline lakes . Many of the shorelines have been cleared for agriculture. The IBA is part of the Peel-Yalgorup Ramsar site . The site has been identified as an Important Bird Area (IBA) by BirdLife International because it supports fairy terns , large numbers of hooded plovers and over 1% of

8100-400: The largest of which merge with other large rivers before themselves joining the Bay of Bengal. But this current channel pattern was not always the case. Over time the rivers in Ganges Delta have often changed course , sometimes altering the network of channels in significant ways. Before the late 12th century the Bhagirathi-Hooghly distributary was the main channel of the Ganges and the Padma

8208-423: The locality of Langalbandh , is still considered sacred by Hindus. Near the confluence is a major early historic site called Wari-Bateshwar . In the rainy season of 1809, the lower channel of the Bhagirathi, leading to Kolkata, had been entirely shut; but in the following year it opened again and was nearly of the same size as the upper channel but both however suffered a considerable diminution, owing probably to

8316-470: The main flow of the Ganges to shift to the southeast and the Padma River. By the end of the 18th century, the Padma had become the main distributary of the Ganges. One result of this shift to the Padma was that the Ganges now joined the Meghna and Brahmaputra rivers before emptying into the Bay of Bengal. The present confluence of the Ganges and Meghna was formed very recently, about 150 years ago. Also near

8424-508: The mountains which stretch along the northern frontier, traverse the level country, and not a few of these, after uniting with each other, fall into the river called the Ganges. Now this river, which at its source is 30  stadia broad, flows from north to south, and empties its waters into the ocean forming the eastern boundary of the Gangaridai , a nation which possesses a vast force of the largest-sized elephants." (Diodorus II.37). In 1951

8532-453: The nectar of the gods which then plunges to the earth and waters it with sustenance. In the Vaishnava version of the myth, the heavenly waters were then a river called Vishnupadi ( Sanskrit : "from the foot of Vishnu"). As Vishnu as the avatar Vamana completes his celebrated three strides —of earth, sky, and heaven— he stubs his toe on the vault of heaven, punches open a hole and releases

8640-509: The new communication opened below the Jalanggi on the upper channel. Discharge of the Ganges River at Farakka Barrage (period from 1998/01/01 to 2023/12/31): The first European traveller to mention the Ganges was the Greek envoy Megasthenes (ca. 350–290 BCE). He did so several times in his work Indica : "India, again, possesses many rivers both large and navigable, which, having their sources in

8748-475: The plains first to the confluence with the Yamuna at Prayag and then to Varanasi, and eventually to Ganges Sagar (Ganges delta), where she meets the ocean, sinks to the netherworld, and saves the sons of Sagara. In honour of Bhagirath's pivotal role in the avatarana , the source stream of the Ganges in the Himalayas is named Bhagirathi, (Sanskrit, "of Bhagiratha"). As the Ganges had descended from heaven to earth in

8856-832: The plants and animals controlled by the wetland hydrology are often additional components of the definitions. Wetlands can be tidal (inundated by tides) or non-tidal. The water in wetlands is either freshwater , brackish , saline , or alkaline . There are four main kinds of wetlands – marsh , swamp , bog , and fen (bogs and fens being types of peatlands or mires ). Some experts also recognize wet meadows and aquatic ecosystems as additional wetland types. Sub-types include mangrove forests , carrs , pocosins , floodplains , peatlands, vernal pools , sinks , and many others. The following three groups are used within Australia to classify wetland by type: Marine and coastal zone wetlands, inland wetlands and human-made wetlands. In

8964-444: The region. The seasonality of flow is so acute it can cause both drought and floods . Bangladesh, in particular, frequently experiences drought during the dry season and regularly suffers extreme floods during the monsoon. In the Ganges Delta, many large rivers come together, both merging and bifurcating in a complicated network of channels . The two largest rivers, the Ganges and Brahmaputra, both split into distributary channels,

9072-621: The river Ganges begins at the confluence of the Bhagirathi and Alaknanda rivers in the town of Devprayag in the Garhwal division of the Indian state of Uttarakhand. The Bhagirathi is considered to be the source in Hindu culture and mythology, although the Alaknanda is longer, and therefore, hydrologically the source stream. The headwaters of the Alakananda are formed by snow melt from peaks such as Nanda Devi , Trisul , and Kamet . The Bhagirathi rises at

9180-409: The river near Varanasi are more than 100 times the Indian government's official limit. The Ganga Action Plan , an environmental initiative to clean up the river, has been considered a failure which is variously attributed to corruption , a lack of will in the government, poor technical expertise, poor environmental planning , and a lack of support from religious authorities. The upper phase of

9288-414: The river's source is usually assumed to be the source of the Bhagirathi River, Gangotri Glacier at Gomukh and its mouth being the mouth of the Meghna River on the Bay of Bengal. Sometimes the source of the Ganges is considered to be at Haridwar, where its Himalayan headwater streams debouch onto the Gangetic Plain. In some cases, the length of the Ganges is given by its Hooghly River distributary, which

9396-554: The river, however, can achieve the same results by bathing in any nearby body of water, which, for the true believer, takes on all the attributes of the Ganges. The karunasiri is an old theme in Hinduism with a number of different versions of the story. In the Vedic version, Indra , the Lord of Svarga ( Heaven ) slays the celestial serpent, Vritra , releasing the celestial liquid, soma , or

9504-472: The river, whose course has been roughly southwest until this point, now begins to flow southeast through the plains of northern India. The Ganges river follows a 900 km (560 mi) arching course passing through the cities of Bijnor , Kannauj, Farukhabad , and Kanpur . Along the way it is joined by the Ramganga , which contributes an average annual flow of about 495 m /s (17,500 cu ft/s) to

9612-490: The river. The Ganges joins the 1,444 km (897 mi) long River Yamuna at the Triveni Sangam at Prayagraj (previously Allahabad), a confluence considered holy in Hinduism. At their confluence the Yamuna is larger than the Ganges contributing about 58.5% of the combined flow, with an average flow of 2,948 m /s (104,100 cu ft/s). Now flowing east, the river meets the 400 km (250 mi) long Tamsa River (also called Tons ), which flows north from

9720-549: The same Ganga." In late May or early June every year, Hindus celebrate the karunasiri and the rise of the Ganges from earth to heaven. The day of the celebration, Ganga Dashahara , the Dashami (tenth day) of the waxing moon of the Hindu calendar month Jyeshtha , brings throngs of bathers to the banks of the river. A dip in the Ganges on this day is said to rid the bather of ten sins (dasha = Sanskrit "ten"; hara = to destroy) or ten lifetimes of sins. Those who cannot journey to

9828-551: The same place was about 180 m /s (6,400 cu ft/s), in 1997. The hydrologic cycle in the Ganges basin is governed by the Southwest Monsoon . About 84% of the total rainfall occurs in the monsoon from June to September. Consequently, streamflow in the Ganges is highly seasonal. The average dry season to monsoon discharge ratio is about 1:6, as measured at Hardinge Bridge . This strong seasonal variation underlies many problems of land and water resource development in

9936-464: The size of the river's drainage basin. The basin covers parts of four countries, India, Nepal , China , and Bangladesh; eleven Indian states, Himachal Pradesh , Uttarakhand, Uttar Pradesh, Madhya Pradesh, Chhattisgarh , Bihar, Jharkhand , Punjab , Haryana, Rajasthan , West Bengal, and the Union Territory of Delhi . The Ganges basin, including the delta but not the Brahmaputra or Meghna basins,

10044-429: The soil and underlying rock into aquifers which are the source of much of the world's drinking water . Wetlands can also act as recharge areas when the surrounding water table is low and as a discharge zone when it is high. Mangroves , coral reefs , salt marsh can help with shoreline stabilization and storm protection. Tidal and inter-tidal wetland systems protect and stabilize coastal zones. Coral reefs provide

10152-537: The soil of wetlands. Anaerobic and aerobic respiration in the soil influences the nutrient cycling of carbon, hydrogen, oxygen, and nitrogen, and the solubility of phosphorus thus contributing to the chemical variations in its water. Wetlands with low pH and saline conductivity may reflect the presence of acid sulfates and wetlands with average salinity levels can be heavily influenced by calcium or magnesium. Biogeochemical processes in wetlands are determined by soils with low redox potential. The life forms of

10260-412: The soils and plants at higher elevations. Plants and animals may vary within a wetland seasonally or in response to flood regimes. There are four main groups of hydrophytes that are found in wetland systems throughout the world. Submerged wetland vegetation can grow in saline and fresh-water conditions. Some species have underwater flowers, while others have long stems to allow the flowers to reach

10368-515: The sources of water include tidal wetlands , where the water source is ocean tides ); estuaries , water source is mixed tidal and river waters; floodplains , water source is excess water from overflowed rivers or lakes; and bogs and vernal ponds , water source is rainfall or meltwater . The world's largest wetlands include the Amazon River basin , the West Siberian Plain ,

10476-406: The spatial and temporal dispersion, flow, and physio-chemical attributes of surface and ground waters. Sources of hydrological flows into wetlands are predominantly precipitation , surface water (saltwater or freshwater), and groundwater. Water flows out of wetlands by evapotranspiration , surface flows and tides , and subsurface water outflow. Hydrodynamics (the movement of water through and from

10584-416: The state of West Bengal. The discharge of the Ganges also differs by source. Frequently, discharge is described for the mouth of the Meghna River, thus combining the Ganges with the Brahmaputra and Meghna. This results in a total average annual discharge of about 38,000 m /s (1,300,000 cu ft/s), or 42,470 m /s (1,500,000 cu ft/s). In other cases the average annual discharges of

10692-404: The story of the avatarana is told at Shraddha ceremonies for the deceased in Hinduism, and Ganges water is used in Vedic rituals after death . Among all hymns devoted to the Ganges, there are none more popular than the ones expressing the worshipper's wish to breathe his last surrounded by her waters. The Gangashtakam expresses this longing fervently: O Mother! ... Necklace adorning

10800-709: The surface of the water. When trees and shrubs comprise much of the plant cover in saturated soils, those areas in most cases are called swamps . The upland boundary of swamps is determined partly by water levels. This can be affected by dams Some swamps can be dominated by a single species, such as silver maple swamps around the Great Lakes . Others, like those of the Amazon basin , have large numbers of different tree species. Other examples include cypress ( Taxodium ) and mangrove swamps. Many species of fish are highly dependent on wetland ecosystems. Seventy-five percent of

10908-490: The surface. Submerged species provide a food source for native fauna, habitat for invertebrates, and also possess filtration capabilities. Examples include seagrasses and eelgrass . Floating water plants or floating vegetation are usually small, like those in the Lemnoideae subfamily (duckweeds). Emergent vegetation like the cattails ( Typha spp.), sedges ( Carex spp.) and arrow arum ( Peltandra virginica ) rise above

11016-515: The surrounding environment resulting in increased extinction rates in unfavorable and polluted environmental conditions. Reptiles such as snakes , lizards , turtles , alligators and crocodiles are common in wetlands of some regions. In freshwater wetlands of the Southeastern US, alligators are common and a freshwater species of crocodile occurs in South Florida. The Florida Everglades

11124-492: The then unformed Indian Ocean. The subcontinent's subsequent collision with the Eurasian Plate and subduction under it, gave rise to the Himalayas, the planet's highest mountain ranges. In the former seabed immediately south of the emerging Himalayas, plate movement created a vast trough , which, having gradually been filled with sediment borne by the Indus and its tributaries and the Ganges and its tributaries, now forms

11232-440: The types of plants that live within them. Specifically, wetlands are characterized as having a water table that stands at or near the land surface for a long enough period each year to support aquatic plants . A more concise definition is a community composed of hydric soil and hydrophytes . Wetlands have also been described as ecotones , providing a transition between dry land and water bodies. Wetlands exist "...at

11340-423: The world populations of Australian shelducks , red-necked stints , banded stilts and, sometimes, musk ducks . Other birds recorded on the lakes in relatively large numbers include red-capped plovers , red-necked avocets , Pacific black ducks , little black cormorants , great crested grebes and black swans . Wetland Wetlands exist on every continent , except Antarctica . The water in wetlands

11448-526: The worlds! Banner rising to heaven! I ask that I may leave of this body on your banks, Drinking your water, rolling in your waves, Remembering your name, bestowing my gaze upon you. No place along her banks is more longed for at the moment of death by Hindus than Varanasi, the Great Cremation Ground, or Mahashmshana . Those who are lucky enough to die in Varanasi, are cremated on the banks of

11556-402: The worst dry season the Ganges flow would be around 1,400 to 1,600 m /s (49,000 to 57,000 cu ft/s), thus leaving 280 to 420 m /s (9,900 to 14,800 cu ft/s) for the then East Pakistan. East Pakistan objected and a protracted dispute ensued. In 1996 a 30-year treaty was signed with Bangladesh. The terms of the agreement are complicated, but in essence, they state that if

11664-477: Was only a minor spill-channel. The main flow of the river reached the sea not via the modern Hooghly River but rather by the Adi Ganga . Between the 12th and 16th centuries, the Bhagirathi-Hooghly and Padma channels were more or less equally significant. After the 16th century, the Padma grew to become the main channel of the Ganges. It is thought that the Bhagirathi-Hooghly became increasingly choked with silt, causing

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