Ganges

Ganges

The Ganges, known as Ganga in India and the Padma in Bangladesh, is a trans-boundary river of Asia, a colossal artery that nourishes hundreds of millions of lives and carries the weight of millennia of history and spiritual devotion. This magnificent river, stretching an impressive 2,525 kilometers (1,569 miles), originates in the stark, majestic peaks of the western Himalayas , within the Indian state of Uttarakhand . Its journey is a dramatic descent, first south and then east, carving its path through the fertile expanse of the Gangetic Plain in North India . Along this course, it generously receives the waters of its right-bank tributary, the Yamuna , itself born in the same formidable mountain ranges. From the north, a cascade of tributaries from Nepal joins, contributing the lion’s share of its considerable flow.

As the Ganges approaches the eastern Indian state of West Bengal , a significant portion of its water is artfully diverted southward through a feeder canal. This engineered artery connects it to the Hooghly River , a distributary that winds its way towards the sea. The main channel of the Ganges, however, continues its southward journey into Bangladesh, where its identity shifts, and it becomes known as the Padma. Here, it embraces the mighty Jamuna River , the lower course of the legendary Brahmaputra River . The confluence of these titans, further joined by the Meghna River , forms the vast and awe-inspiring Ganges Delta , ultimately emptying into the immense Bay of Bengal . Together, the Ganges–Brahmaputra–Meghna system forms the second-largest river on Earth in terms of discharge, a testament to its raw, untamed power.

The very genesis of the Ganges, the main stem of this sacred river, is marked by a profound confluence at the town of Devprayag , nestled in Uttarakhand . Here, the Alaknanda River , which hydrologically holds the distinction of being the source stream due to its greater length, unites with the Bhagirathi River . The Bhagirathi, while shorter, is revered in Hindu tradition and mythology as the true source, its waters imbued with divine significance. The headwaters of the Alaknanda itself are a complex network fed by the snowmelt from towering Himalayan peaks like Nanda Devi , Trisul , and Kamet . The Bhagirathi traces its origins to the foot of the Gangotri Glacier at Gomukh , a place at an elevation of 4,356 meters (14,291 feet), mythologically said to reside in the matted locks of Shiva .

The Ganges is more than just a geographical feature; it is a lifeline, a sacred entity, and a historical canvas. It sustains the daily existence of hundreds of millions, providing water for drinking, agriculture, and spiritual practice. Its banks have witnessed the rise and fall of empires, serving as the cradle for numerous provincial and imperial capitals, including the ancient Pataliputra , the historic Kannauj , and the bustling metropolises of Dhaka , Varanasi , and Kolkata , among many others. The river teems with life, hosting approximately 140 species of fish, 90 species of amphibians , and a diverse array of reptiles and mammals , including critically endangered species like the gharial and the elusive South Asian river dolphin . For Hindus , the Ganges is the most sacred river, revered as the goddess Ganga herself, a divine presence flowing through the mortal realm.

However, this sacred river faces grave peril. The Ganges is threatened by severe pollution , a crisis that endangers not only human health but also the delicate ecosystem it supports. Levels of fecal coliform bacteria, primarily from human waste , frequently exceed official government limits by over a hundred times in areas near Varanasi . The ambitious Ganga Action Plan , an environmental initiative launched with the intent to cleanse the river, has been widely criticized as a failure. This failure is attributed to a complex web of factors, including rampant corruption , governmental apathy, inadequate technical expertise, flawed environmental planning , and a notable lack of support from religious authorities, who seem to find themselves in a precarious position, balancing the river’s sacred purity with its undeniable contamination.

Course

The initial phase of the Ganges’ journey commences at the confluence of the Bhagirathi and Alaknanda rivers in Devprayag, a town within the Garhwal region of Uttarakhand. While Hindu tradition venerates the Bhagirathi as the source, hydrologically, the Alaknanda, being the longer of the two, is considered the primary source stream. The headwaters of the Alaknanda are fed by the glacial melt from formidable peaks such as Nanda Devi , Trisul , and Kamet . The Bhagirathi, meanwhile, originates at the base of the Gangotri Glacier at Gomukh , at an imposing altitude of 4,356 meters (14,291 feet).

The headwaters of the Ganges are not a singular entity but a confluence of numerous smaller streams. However, six of these are particularly significant and considered sacred, along with their five confluences, collectively known as the Panch Prayag . These streams are, in order of their downstream joining with the Alaknanda: the Alaknanda itself, the Dhauliganga , the Nandakini , the Pindar , the Mandakini , and finally, the Bhagirathi. The Panch Prayag, in downstream order along the Alaknanda, are Vishnuprayag , where the Dhauliganga merges; Nandprayag , where the Nandakini joins; Karnaprayag , where the Pindar flows in; Rudraprayag , where the Mandakini is received; and finally, Devprayag, the point where the Bhagirathi unites with the Alaknanda to officially form the Ganges.

After traversing approximately 256.90 kilometers (159.63 miles) through its narrow, winding Himalayan valley, the Ganges emerges from the mountains at Rishikesh . It then debouches onto the vast Gangetic Plain at the revered pilgrimage town of Haridwar . It is at Haridwar that a significant headworks diverts a portion of the river’s flow into the Ganges Canal . This canal serves to irrigate the extensive Doab region of Uttar Pradesh . From this point onward, the river, which had been flowing predominantly southwest, begins its decisive turn towards the southeast, traversing the sprawling plains of northern India.

The Ganges embarks on an impressive 900-kilometer (560-mile) arching course, passing through a string of historically significant cities. These include Bijnor , Kannauj, Farukhabad , and the major industrial hub of Kanpur . Along this stretch, it is joined by the Ramganga , a tributary that contributes an average annual flow of approximately 495 cubic meters per second (17,500 cubic feet per second). The river’s journey then leads it to the Triveni Sangam at Prayagraj (formerly Allahabad). Here, it merges with the 1,444-kilometer (897-mile) long Yamuna River , a confluence considered profoundly holy in Hinduism. At this meeting point, the Yamuna is the more substantial of the two, contributing roughly 58.5% of the combined flow, with an average discharge of 2,948 cubic meters per second (104,100 cubic feet per second).

Continuing its eastward flow, the Ganges encounters the 400-kilometer (250-mile) long Tamsa River , also known as the Tons River. This tributary flows northward from the Kaimur Range and adds an average flow of about 187 cubic meters per second (6,600 cubic feet per second) to the Ganges. Following the Tamsa, the 625-kilometer (388-mile) long Gomti River joins, flowing south from the Himalayas and contributing an average annual flow of approximately 234 cubic meters per second (8,300 cubic feet per second). Next to join is the 1,156-kilometer (718-mile) long Ghaghara River , also known as the Karnali River, which flows south from the Tibetan Himalayas through Nepal. The Ghaghara, with its average annual flow of about 2,991 cubic meters per second (105,600 cubic feet per second), stands as the largest tributary of the Ganges in terms of discharge. After this confluence, the Ganges receives the 784-kilometer (487-mile) long Son River from the south, which contributes around 1,008 cubic meters per second (35,600 cubic feet per second). Further downstream, the 814-kilometer (506-mile) long Gandaki River and the 729-kilometer (453-mile) long Kosi River merge from the north, having flowed from Nepal. The Gandaki contributes an average flow of about 1,654 cubic meters per second (58,400 cubic feet per second), while the Kosi adds approximately 2,166 cubic meters per second (76,500 cubic feet per second). The Kosi ranks as the third-largest tributary of the Ganges by discharge, following the Ghaghara and the Yamuna. The Kosi finds its confluence with the Ganges near Kursela in the state of Bihar .

As the Ganges traverses the plains between Prayagraj and Malda , in West Bengal , it flows past numerous towns and cities, including Chunar , Mirzapur , Varanasi , Ghazipur , Ara , Patna , Chapra , Hajipur , Mokama , Begusarai , Munger , Sahibganj , Rajmahal , Bhagalpur , Ballia , Buxar , Simaria , Sultanganj , and the significant Farakka region. It is near Bhagalpur that the river begins to curve towards the south-southeast. At Farakka, the river’s course is altered by the emergence of its first major distributary , the 408-kilometer (254-mile) long Bhāgirathi-Hooghly . This distributary eventually evolves into the Hooghly River . Just prior to reaching the border of Bangladesh, the Farakka Barrage plays a crucial role in managing the Ganges’ flow. It diverts a portion of the water into a feeder canal that connects to the Hooghly, a measure intended to maintain the Hooghly’s navigability by reducing siltation. The Hooghly River itself is formed by the confluence of the Bhagirathi River and the Ajay River near Katwa . The Hooghly is further augmented by its own tributaries, the most substantial being the Damodar River , which stretches 625 kilometers (388 miles) and drains an area of 25,820 square kilometers (9,970 square miles). The Hooghly River ultimately merges with the Bay of Bengal near the coastal settlement of Sagar Island . Between Malda and the Bay of Bengal, the Hooghly flows past the cities of Murshidabad , Nabadwip , Kolkata, and Howrah .

Upon crossing into Bangladesh, the primary channel of the Ganges adopts the name Padma . The Padma is then joined by the Jamuna River , which is the largest distributary of the Brahmaputra . Further downstream, the Padma merges with the Meghna River . The combined flow, now taking on the Meghna’s name, enters the Meghna Estuary before emptying into the Bay of Bengal . This massive deltaic system forms the 1,430 by 3,000 kilometer (890 by 1,860 mile) Bengal Fan , the largest submarine fan on Earth, responsible for depositing an estimated 10–20% of the global burial of organic carbon .

The Ganges Delta , a prodigious landmass sculpted primarily by the immense sediment load carried by the Ganges and Brahmaputra rivers, stands as the world’s largest delta, spanning approximately 64,000 square kilometers (25,000 square miles) and extending 400 kilometers (250 miles) along the Bay of Bengal .

In terms of sheer volume of water discharged, only the Amazon and Congo rivers surpass the combined flow of the Ganges, Brahmaputra, and Surma-Meghna river system. During periods of peak flood, the Amazon is the only river that rivals its magnitude.

Geology

The geographical foundation of the Indian subcontinent lies upon the Indian tectonic plate , a significant component of the larger Indo-Australian Plate . The monumental geological processes that shaped this region began approximately seventy-five million years ago. At that time, as part of the supercontinent Gondwana , the Indian landmass commenced a fifty-million-year journey northeastward across what would eventually become the Indian Ocean. This continental drift culminated in a colossal collision with the Eurasian Plate , leading to subduction and the dramatic uplift that formed the Himalayas, the planet’s loftiest mountain ranges. Immediately south of these emerging mountains, a vast geological trough was created by the relentless plate movements. This trough, gradually filled over eons by the sediment carried by the Indus and its tributaries, as well as the Ganges and its own tributaries, now constitutes the expansive Indo-Gangetic Plain . This plain is geologically classified as a foredeep or foreland basin .

Hydrology

A detailed map from 1908 illustrates the intricate network of the Ganges and its tributaries, showcasing the river’s historical course.

The major left-bank tributaries feeding the Ganges include the Gomti River, Ghaghara River, Gandaki River, and Kosi River. On the right bank, the Yamuna River, Son River, Punpun , and Damodar are significant contributors. The hydrological behavior of the Ganges River is exceptionally complex, particularly within the intricate labyrinth of the Ganges Delta. This complexity leads to variations in how the river’s length, discharge , and the size of its drainage basin are measured and defined.

The Ganges River is recognized as such between the confluence of the Bhagirathi and Alaknanda rivers in the Himalayas and the initial bifurcation of the river, which occurs near the Farakka Barrage and the border between India and Bangladesh. The length of the Ganges is frequently cited as being slightly over 2,600 kilometers (1,600 miles), with specific figures ranging from approximately 2,601 kilometers (1,616 miles) to 2,525 kilometers (1,569 miles) or even 2,650 kilometers (1,650 miles). In these calculations, the river’s source is typically considered to be the Bhagirathi River’s origin at the Gangotri Glacier in Gomukh, and its mouth is the mouth of the Meghna River on the Bay of Bengal. Occasionally, the Ganges’ source is identified as Haridwar, where its Himalayan headwater streams emerge onto the Gangetic Plain.

Due to these differing definitions, sources also vary regarding the Ganges’ length. In some instances, the length is measured via its Hooghly River distributary, which is longer than the main outlet through the Meghna River. This yields a total length of about 2,704 kilometers (1,680 miles) if measured from the Bhagirathi’s source, or 2,321.50 kilometers (1,442.51 miles) if measured from Haridwar to the Hooghly’s mouth. In other accounts, the length is stated as approximately 2,304 kilometers (1,432 miles), extending from the Bhagirathi’s source to the Bangladesh border, where it is renamed the Padma.

Similarly, discrepancies exist concerning the size of the river’s drainage basin. The basin encompasses parts of four nations: India, Nepal , China , and Bangladesh. Within India alone, it spans eleven 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 excluding the Brahmaputra and Meghna basins, covers an area of about 1,080,000 square kilometers (420,000 square miles). Of this, 861,000 square kilometers (332,000 square miles) lie within India (approximately 80%), 140,000 square kilometers (54,000 square miles) in Nepal (13%), 46,000 square kilometers (18,000 square miles) in Bangladesh (4%), and 33,000 square kilometers (13,000 square miles) in China (3%). In some analyses, the Ganges and Brahmaputra–Meghna drainage basins are combined, resulting in a total area of about 1,600,000 square kilometers (620,000 square miles) or 1,621,000 square kilometers (626,000 square miles). The combined Ganges-Brahmaputra-Meghna basin, often abbreviated as GBM or GMB, extends across Bangladesh, Bhutan , India, Nepal, and China.

The geographical extent of the Ganges basin is vast, ranging from the Himalaya and the Transhimalaya in the north to the northern slopes of the Vindhya range in the south. It stretches from the eastern slopes of the Aravalli in the west to the Chota Nagpur plateau and the Sunderbans delta in the east. A substantial portion of the Ganges’ discharge originates from the Himalayan mountain system. Within the Himalayas, the Ganges basin extends for nearly 1,200 kilometers, from the Yamuna-Satluj divide along the Simla ridge, which forms the boundary with the Indus basin in the west, to the Singalila Ridge along the Nepal-Sikkim border, marking the boundary with the Brahmaputra basin in the east. This Himalayan section of the basin is home to nine of the world’s fourteen highest peaks, all exceeding 8,000 meters in elevation, including Mount Everest , which represents the highest point within the Ganges basin. The other peaks over 8,000 meters located within the basin are Kangchenjunga , Lhotse , Makalu , Cho Oyu , Dhaulagiri , Manaslu , Annapurna , and Shishapangma . The Himalayan portion of the basin encompasses the southeastern part of Himachal Pradesh, the entirety of Uttarakhand, the entire nation of Nepal, and the extreme northwestern part of West Bengal.

The discharge of the Ganges also varies depending on the measurement point and definition. Frequently, discharge figures are reported for the mouth of the Meghna River, thereby encompassing the combined flow of the Ganges, Brahmaputra, and Meghna. This results in a total average annual discharge of approximately 38,000 cubic meters per second (1,300,000 cubic feet per second) or 42,470 cubic meters per second (1,500,000 cubic feet per second). In other instances, the average annual discharges of the Ganges, Brahmaputra, and Meghna are reported separately: around 16,650 cubic meters per second (588,000 cubic feet per second) for the Ganges, approximately 19,820 cubic meters per second (700,000 cubic feet per second) for the Brahmaputra, and about 5,100 cubic meters per second (180,000 cubic feet per second) for the Meghna.

The Hardinge Bridge in Bangladesh, which spans the Ganges-Padma River, serves as a critical location for measuring streamflow and discharge on the lower Ganges.

The maximum peak discharge of the Ganges, as recorded at the Hardinge Bridge in Bangladesh, has exceeded 70,000 cubic meters per second (2,500,000 cubic feet per second). The minimum recorded discharge at the same location was approximately 180 cubic meters per second (6,400 cubic feet per second) in 1997.

The hydrological cycle within the Ganges basin is predominantly governed by the Southwest Monsoon . Approximately 84% of the total annual rainfall occurs during this monsoon period, from June to September. Consequently, the streamflow in the Ganges exhibits strong seasonal variations. The ratio of average dry season to monsoon discharge is roughly 1:6, as measured at the Hardinge Bridge. This pronounced seasonality underlies many of the challenges faced in land and water resource development throughout the region. The acute seasonality of flow can lead to both severe drought conditions during dry periods and devastating floods during the monsoon. Bangladesh, in particular, frequently experiences droughts in the dry season and is regularly subjected to extreme floods during the monsoon.

Within the Ganges Delta, a complex network of channels is formed by the convergence and divergence of numerous large rivers. The two most significant rivers, the Ganges and the Brahmaputra, both divide into distributary channels. The largest of these channels often merge with other major rivers before ultimately emptying into the Bay of Bengal. However, this intricate channel pattern has not been static. Over time, the rivers within the Ganges Delta have frequently changed course , sometimes leading to substantial alterations in the network of channels.

Prior to the late 12th century, the Bhagirathi-Hooghly distributary served as the primary channel of the Ganges, with the Padma being a relatively minor spill-channel. The main flow of the river reached the sea not through the modern Hooghly River but via the Adi Ganga . Between the 12th and 16th centuries, the Bhagirathi-Hooghly and Padma channels held comparable significance. Following the 16th century, the Padma gradually grew to become the dominant channel of the Ganges. It is theorized that the Bhagirathi-Hooghly became increasingly choked with silt, prompting the main flow of the Ganges to shift towards the southeast and the Padma River. By the close of the 18th century, the Padma had firmly established itself as the principal distributary of the Ganges. A consequence of this shift towards the Padma was that the Ganges began to merge with the Meghna and Brahmaputra rivers before emptying into the Bay of Bengal. The current confluence of the Ganges and Meghna formed relatively recently, approximately 150 years ago.

Furthermore, around the end of the 18th century, the course of the lower Brahmaputra underwent a dramatic change, significantly altering its relationship with the Ganges. In 1787, a major flood on the Teesta River , which at that time was a tributary of the Ganges-Padma River, caused the Teesta to abruptly shift its course eastward, joining the Brahmaputra. This event also caused the Brahmaputra to alter its course southward, carving a new channel known as the Jamuna River. The Jamuna flows south to merge with the Ganges-Padma. In ancient times, the main flow of the Brahmaputra was more easterly, passing by the city of Mymensingh and joining the Meghna River. Today, this ancient channel is a minor distributary but retains the name Brahmaputra, sometimes referred to as the Old Brahmaputra. The site of the old Brahmaputra-Meghna confluence, in the vicinity of Langalbandh , remains a sacred location for Hindus. Nearby this confluence lies an important archaeological site from early history, known as Wari-Bateshwar .

During the monsoon season of 1809, the lower channel of the Bhagirathi, which leads to Kolkata, became entirely closed. However, in the following year, it reopened and was nearly as substantial as the upper channel. Nevertheless, both channels experienced a considerable reduction in flow, likely due to a new communication channel that opened below the Jalanggi on the upper channel.

Discharge

The discharge of the Ganges River at the Farakka Barrage has been meticulously recorded over the years. The provided table details the annual average, average minimum, and average maximum discharge in cubic meters per second (m³/s) for the period spanning from 1998 to 2023. The overall average discharge for this period indicates a complex flow pattern, with an annual average of 13,389.3 m³/s, an average minimum of 7,514.4 m³/s, and an average maximum of 20,143.6 m³/s. These figures highlight the significant seasonal variations in the river’s flow, a characteristic that profoundly influences its hydrology and the surrounding environment.

History

The earliest recorded European mention of the Ganges comes from the Greek envoy Megasthenes (circa 350–290 BCE). In his significant work, Indica , he refers to the river multiple times, noting its considerable breadth at its source and its flow southward into the ocean, forming the boundary of the Gangaridai people, known for their vast numbers of elephants.

A pivotal moment in the river’s modern history was the Ganges water dispute , which emerged in 1951 between India and East Pakistan (now Bangladesh). This dispute arose after India announced its intention to construct the Farakka Barrage. The barrage, completed in 1975, was designed to divert up to 1,100 cubic meters per second (39,000 cubic feet per second) of water from the Ganges to the Bhagirathi-Hooghly distributary. The primary objective was to restore navigability to the Port of Kolkata , which had been suffering from siltation. It was estimated that during the driest season, the Ganges flow would be around 1,400 to 1,600 cubic meters per second (49,000 to 57,000 cubic feet per second), leaving a residual flow of 280 to 420 cubic meters per second (9,900 to 14,800 cubic feet per second) for East Pakistan. East Pakistan lodged strong objections, initiating a protracted dispute that spanned decades. In 1996, a 30-year treaty was finally signed with Bangladesh. This agreement, while complex, essentially stipulated that if the Ganges flow at Farakka fell below 2,000 cubic meters per second (71,000 cubic feet per second), India and Bangladesh would share the water equally, with each receiving at least 1,000 cubic meters per second (35,000 cubic feet per second) for alternating ten-day periods. However, within a year of the treaty’s signing, the flow at Farakka dropped to levels significantly below the historical average, rendering the guaranteed water sharing impossible to implement. The flow in Bangladesh reached its lowest point ever in March 1997, plummeting to 180 cubic meters per second (6,400 cubic feet per second). While dry season flows returned to more normal levels in subsequent years, efforts continue to address the underlying issues. One proposed solution involves the construction of another barrage in Bangladesh, at Pangsha , west of Dhaka , which would enable Bangladesh to better manage and utilize its allocated share of the Ganges waters.

Religious and Cultural Significance

The Ganges holds an unparalleled position of sacredness for Hindus, revered along its entire length. Devotees flock to its banks to bathe in its waters, a ritual believed to purify sins and bring them closer to spiritual liberation. They offer flowers, petals, and small oil lamps (diyas) in acts of devotion to their ancestors and deities. The water collected from the Ganges, known as Ganga Jal, is considered holy and is used in numerous Hindu rituals.

In Hindu mythology , the Ganges embodies all sacred waters. Local rivers are often likened to the Ganges, sometimes being referred to as the “local Ganges.” For instance, the Godavari River in Western India is known as the Ganges of the South, or the ‘Dakshin Ganga.’ The Ganges is invoked in virtually all Hindu water rituals, signifying its omnipresence in sacred waters. Yet, the most profound spiritual experience for a Hindu is a dip in the actual river, particularly at renowned tirthas like Varanasi , Gangotri , Haridwar , or the Triveni Sangam at Prayagraj . The profound religious and symbolic importance of the Ganges is a rare point of consensus among Hindus, even those who are skeptical of traditional beliefs. Jawaharlal Nehru, a prominent figure in modern India and a man of secular views, famously requested that a handful of his ashes be scattered in the Ganges, recognizing it as “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 the same Ganga.”

Avatarana – Descent of Ganges

Each year, typically in late May or early June, Hindus celebrate the Avatarana, the divine descent of the Ganges from heaven to earth. This festival, known as Ganga Dashahara, falls on the tenth day of the waxing moon in the Hindu calendar month of Jyeshtha . On this day, enormous crowds gather on the riverbanks for a ritual bath, believed to cleanse the bather of ten sins, or ten lifetimes of sins. For those unable to make the pilgrimage, bathing in any nearby body of water is believed to confer the same spiritual benefits, as all sacred waters are seen as manifestations of the Ganges.

The Avatarana is an ancient theme in Hindu lore, with several versions of the myth. In the Vedic narrative, Indra , the king of Svarga (Heaven), slays the celestial serpent Vritra , releasing the divine liquid, soma , or the nectar of the gods, which then nourishes the earth.

In the Vaishnava rendition, the heavenly waters were known as Vishnupadi (Sanskrit for “from the foot of Vishnu”). According to this myth, as Vishnu, in his dwarf avatar Vamana , completes his cosmic strides across earth, sky, and heaven, his toe pierces the vault of heaven, creating an opening from which Vishnupadi flows. This divine river first cascades into Indra’s heaven, where it is received by Dhruva , the steadfast devotee of Vishnu, now fixed in the sky as the Pole star . It then streams across the sky, forming the Milky Way , and reaches the moon before descending to Brahma ’s realm, a divine lotus atop Mount Meru , whose petals represent the earthly continents. From this divine lotus, the waters break into streams, with one, the Bhagirathi, flowing down a petal into Bharatavarsha as the Ganges.

However, it is Shiva who plays the most prominent role in the widely recounted version of the Avatarana story, as narrated in the Ramayana , the Mahabharata , and various Puranas . The tale begins with the sage Kapila , whose intense meditation is disrupted by the sixty thousand sons of King Sagara . Enraged by the interruption, Kapila incinerates them with his gaze, consigning them to the netherworld. Only the heavenly waters of the Ganges could grant salvation to the deceased sons. King Bhagiratha , a descendant of Sagara, earnestly undertakes severe penance to bring the Ganges to earth. He is eventually granted his wish, but the river’s torrential force threatened to shatter the earth. Thus, Bhagiratha implores Shiva, dwelling on Mount Kailash , to receive the Ganges in the coils of his matted hair, thereby breaking her fall. The Ganges descends, is tamed within Shiva’s locks, and arrives in the Himalayas. Bhagiratha then leads her down into the plains, first to Haridwar, then across the plains to the confluence with the Yamuna at Prayag, onward to Varanasi, and finally to Ganges Sagar (the Ganges delta), where she merges with the ocean, sinks to the netherworld, and liberates the souls of Sagara’s sons. In honor of Bhagiratha’s pivotal role in this divine descent, the source stream of the Ganges in the Himalayas is named Bhagirathi.

Redemption of the Dead

As the Ganges descended from heaven to earth, it is also considered the celestial pathway, the vehicle of ascent from earth to heaven. Known as the Triloka-patha-gamini (Sanskrit for “one who travels the three worlds”), it flows through heaven , earth , and the netherworld . Consequently, it is revered as a “tirtha,” a sacred crossing point for all beings, both living and deceased. This profound significance explains why the story of the Avatarana is recounted during Shraddha ceremonies for the departed in Hinduism, and why Ganges water is integral to Vedic rituals after death . Among the hymns dedicated to the Ganges, none resonate more deeply than those expressing the fervent wish to die by its sacred waters. The Gangashtakam eloquently captures this longing: “O Mother! … Necklace adorning 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 its banks is more ardently desired at the moment of death by Hindus than Varanasi, the Great Cremation Ground, or Mahashmshana . Those fortunate enough to die in Varanasi are cremated on the banks of the Ganges, a ritual believed to grant instant salvation. If death occurs elsewhere, salvation can be attained by immersing the ashes in the Ganges. Even if ashes have been immersed in another body of water, a relative can still secure salvation for the deceased by journeying to the Ganges, ideally during the lunar “fortnight of the ancestors” in the Hindu calendar month of Ashwin (September or October), and performing the Shraddha rites.

Hindus also perform pinda pradana, a ritual offering where balls of rice and sesame seeds are presented to the Ganges while the names of deceased relatives are recited. Legend has it that each sesame seed in these offerings assures a thousand years of heavenly salvation for each relative. Indeed, the Ganges’ importance in post-death rituals is so profound that the Mahabharata states, “If only (one) bone of a (deceased) person should touch the water of the Ganges, that person shall dwell honoured in heaven.” Illustrating this belief, the Kashi Khanda (Varanasi Chapter) of the Skanda Purana narrates the extraordinary tale of Vahika, a dissolute sinner who is killed by a tiger. Upon his death, his soul is judged by Yama , the Lord of Death, and dispatched to hell due to his lack of merit. Meanwhile, his earthly body is being consumed by vultures. One vulture carries away a foot bone, and in a subsequent struggle with another bird, accidentally drops the bone into the Ganges below. Blessed by this fortuitous immersion, Vahika, en route to hell, is intercepted by a celestial chariot and transported to heaven instead.

The Purifying Ganges

Hindus hold that the waters of the Ganges are inherently pure and possess purifying qualities. Regardless of scientific understanding, the Ganges is ritually and symbolically pure within Hindu culture. It is believed that the Ganges, as moving water, possesses the power to absorb impurities and carry them away, thereby restoring order from chaos. The swift currents of the Ganges, particularly in its upper reaches where one must grasp an anchored chain to avoid being swept away, are considered especially purifying. What the Ganges removes, however, is not merely physical dirt but symbolic impurity; it washes away the sins of the bather, not just from the present life but from past existences as well.

A beloved hymn to the Ganga is the Ganga Lahiri, composed by the 17th-century poet Jagannatha. Legend has it that Jagannatha, ostracized from his Brahmin caste for an affair with a Muslim woman, and unable to regain his status, appealed to Ganga, the refuge of the hopeless. Together with his beloved, Jagannatha sat at the steps of the Panchganga Ghat in Varanasi. With each verse of the poem he recited, the waters of the Ganges rose one step, until finally, they enveloped the lovers and carried them away. The Ganga Lahiri begins with the poignant plea: “I come to you as a child to his mother. I come as an orphan to you, moist with love. I come without refuge to you, giver of sacred rest. I come a fallen man to you, uplifter of all. I come a fallen man to you, uplifter of all. I come, my heart dry with thirst, to you, ocean of sweet wine. Do with me whatever you will.”

Consort, Shakti, and Mother

Ganga is revered as a consort to all three major male deities of Hinduism. As Brahma’s partner, she is eternally present with him in the form of water within his kamandalu (water-pot). She is also considered Vishnu ’s consort. Not only does she emanate from his foot as Vishnupadi in the Avatarana story, but she is also, alongside Sarasvati and Lakshmi , one of his co-wives. In a popular myth, driven by envy, the co-wives quarrel. While Lakshmi attempts to mediate, Ganga and Sarasvati curse each other to become rivers, destined to bear the sins of their human worshippers through their purifying waters. Their husband, Vishnu, intervenes to calm the situation by separating the goddesses. He decrees that Sarasvati shall marry Brahma, Ganga shall marry Shiva, and Lakshmi, as the peacemaker, will remain his wife. However, Ganga and Sarasvati are so distraught by this decree that Vishnu relents, allowing them to remain with him in their transformed states as rivers.

Shiva, as Gangadhara, the “Bearer of the Ganga,” is depicted in Hindu iconography with Ganga, shown as a spout of water, rising from his hair. The relationship between Shiva and Ganga is portrayed as both perpetual and intimate. Shiva is sometimes referred to as Uma-Ganga-Patiswara (“Husband and Lord of Uma (Parvati) and Ganga”), and Ganga often evokes the jealousy of Shiva’s more prominent consort, Parvati.

Ganga represents shakti , the dynamic, restless energy through which the usually reclusive and unapproachable Shiva manifests on earth. As water, this dynamic energy is tangible, perceptible, and absorbable. In the Kashi Khanda of the Skanda Purana , the war god Skanda addresses the sage Agastya with these words: “One should not be amazed… that this Ganges is really Power, for is she not the Supreme Shakti of the Eternal Shiva, taken in the form of water? This Ganges, filled with the sweet wine of compassion, was sent out for the salvation of the world by Shiva, the Lord of the Lords. Good people should not think this Triple-Pathed River to be like the thousand other earthly rivers, filled with water.”

The Ganga is also revered as the mother, Ganga Mata, embodying unconditional acceptance and forgiveness. Unlike other goddesses, she lacks a destructive or fearsome aspect, despite her potential to unleash destructive floods as a river. She is also a mother figure to other gods. She receives the incandescent seed of Shiva from the fire-god Agni , which is too potent for the earthly realm and is cooled in her waters. This divine union results in the birth of Skanda, or Kartikeya, the god of war. In the Mahabharata , she is married to Shantanu and is the mother of the heroic patriarch, Bhishma . When Bhishma is mortally wounded in battle, Ganga emerges from the water in human form, weeping uncontrollably over his body.

The Ganges is considered the distilled essence of the Hindu tradition, embodying its divinities, sacred texts, and spiritual enlightenment. As such, her worship does not require the conventional rites of invocation (avahana) at the beginning and dismissal (visarjana) at the end, which are customary for other deities. Her divinity is seen as immediate and eternal.

Ganges in Classical Indian Iconography

From ancient times, the Ganges River has been associated with fertility, its life-giving waters, and its rich silt providing sustenance to those living along its banks. As a counterpoint to the scorching Indian sun, the Ganges gradually acquired magical properties and came to be venerated in anthropomorphic form. By the 5th century CE, a complex mythology had developed around the Ganges, establishing her as a goddess in her own right and a symbol for all rivers in India. Hindu temples across India featured statues and reliefs of the goddess at their entrances, symbolically cleansing the sins of worshippers and guarding the sanctum within. As a protector of the sanctum sanctorum , the goddess began to be depicted with characteristic attributes: the makara (a mythical sea creature resembling a crocodile), the kumbha (a pot overflowing with water), various parasol-like coverings, and an increasingly elaborate retinue of human figures.

Central to the goddess’s visual identity is the makara, which also serves as her vahana , or mount. An ancient symbol in India, the makara predates the goddess Ganga’s appearance in art. The makara carries a dual symbolism: on one hand, it represents the life-affirming waters and vegetation of its environment; on the other, it embodies fear, both the fear of the unknown lurking in the waters and the tangible fear it instills when seen. The earliest confirmed depiction of the makara alongside Ganga is found at the Udayagiri Caves in Central India (circa 400 CE). Here, in Cave V, flanking the central figure of Vishnu in his boar incarnation, two river goddesses, Ganga and Yamuna, are shown atop their respective mounts, the makara and the kurma (a turtle or tortoise).

The makara is often accompanied by a gana , a small boy or child, near its mouth, as exemplified by the Gupta period relief from Besnagar in Central India. The gana symbolizes both posterity and development (udbhava). The juxtaposition of the fearsome, life-destroying makara with the youthful, life-affirming gana reflects the dual nature of the Ganges itself. While it has provided sustenance to millions, it has also brought hardship, injury, and death through devastating floods. The goddess Ganga is also depicted with a dwarf attendant, who carries her cosmetic bag, and upon whom she sometimes leans for support.

The purna kumbha, or full pot of water, is the second most recognizable element in Ganga iconography. First appearing in the relief at the Udayagiri Caves (5th century), it became increasingly prevalent as the goddess’s iconography matured. By the 7th century, it was an established feature, as seen in the Dashavatara temple in Deogarh, Uttar Pradesh (7th century), the Trimurti temple in Badoli , Chittorgarh , Rajasthan, and at the Lakshmaneshwar temple in Kharod , Bilaspur, Chhattisgarh (9th or 10th century). The full pot is worshipped even today and symbolizes the formless Brahman , as well as woman, the womb, and birth. Furthermore, the river goddesses Ganga and Saraswati are said to have been born from Brahma’s pot containing celestial waters.

In her earliest depictions at temple entrances, the goddess Ganga was shown standing beneath the overhanging branch of a tree, as observed in the Udayagiri caves. Subsequently, the tree cover evolved into a chatra , or parasol, held by an attendant, as seen in the 7th-century Dasavatara temple at Deogarh. This canopy underwent further transformations, appearing as a lotus-shaped parasol in the temple at Kharod, Bilaspur, and being replaced entirely by a lotus at the Trimurti temple in Badoli.

As her iconography developed, sculptors, particularly in central India, created dynamic scenes of the goddess, complete with an entourage, suggesting a royal procession to a river for bathing. A relief similar to the depiction in frame 4 is described by Pal (1997, p. 43) as follows: “A typical relief of about the ninth century that once stood at the entrance of a temple, the river goddess Ganga is shown as a voluptuously endowed lady with a retinue. Following the iconographic prescription, she stands gracefully on her composite makara mount and holds a water pot. The dwarf attendant carries her cosmetic bag, and a female holds the stem of a giant lotus leaf that serves as her mistress’s parasol. The fourth figure is a male guardian. Often in such reliefs, the makara’s tail is extended with great flourish into a scrolling design symbolizing both vegetation and water.”

Kumbh Mela

The Kumbh Mela is a colossal Hindu pilgrimage that draws millions to the banks of the Ganges River. The regular Kumbh Mela occurs every three years, while the Ardh (half) Kumbh is celebrated every six years at Haridwar and Prayagraj . The Purna (complete) Kumbh takes place every twelve years at four sacred sites: Triveni Sangam (Prayagraj), Haridwar, Ujjain , and [Nashik]. The Maha (great) Kumbh Mela, occurring after twelve Purna Kumbh Melas, or every 144 years, is held at Prayagraj.

The central event of the festival is ritual bathing in the river. Other activities include religious discourses, devotional singing, mass feeding of holy men, women, and the poor, and religious assemblies for the debate and standardization of doctrines. The Kumbh Mela is considered the most sacred of all pilgrimages, partly due to the attendance of thousands of holy men and women, known as sadhus . These ascetics are often seen clad in saffron robes, their bodies adorned with ashes and powder according to ancient traditions. Some, like the naga sanyasis , may appear unclothed.

Irrigation

The Ganges and its tributaries, most notably the Yamuna, have been integral to irrigation practices since antiquity. Dams and canals were common in the Gangetic plain as early as the 4th century BCE. The Ganges-Brahmaputra-Meghna basin possesses immense hydroelectric potential, estimated between 200,000 and 250,000 megawatts, a significant portion of which could be readily harnessed. As of 1999, India had tapped only about 12% of the Ganges’ hydroelectric potential and a mere 1% of the Brahmaputra’s vast capacity.

Canals

Historical accounts suggest the existence of canals in the Gangetic plain even in ancient times. Megasthenes, a Greek ethnographer who visited India during the 3rd century BCE, noted their presence. Kautilya (Chanakya ), an advisor to Chandragupta Maurya , even included the destruction of dams and levees as a wartime strategy. Firuz Shah Tughlaq commissioned the construction of numerous canals, the longest of which, spanning 240 kilometers (150 miles), was built in 1356 on the Yamuna River. This canal, now known as the Western Yamuna Canal, has undergone periods of disrepair and restoration. The Mughal emperor Shah Jahan ordered the construction of an irrigation canal on the Yamuna in the early 17th century. This canal fell into disuse but was reopened in 1830 as the Eastern Yamuna Canal under British administration. Its revival served as a blueprint for the Upper Ganges Canal and subsequent canal projects.

The Ganges Canal , a significant engineering feat of the British era, was constructed between 1842 and 1854. Its initial conception in 1836 by Col. John Russell Colvin did not immediately garner enthusiasm from its eventual architect, Sir Proby Thomas Cautley , who was hesitant about excavating a canal through extensive low-lying land to reach its drier upland destination. However, the devastating Agra famine of 1837–38 , during which the East India Company spent ₹2,300,000 on famine relief, spurred renewed interest in the canal project from the company’s budget-conscious Court of Directors. In 1839, Lord Auckland , the Governor General of India, with the Court’s approval, allocated funds to Cautley for a comprehensive survey of the land designated for the canal’s course. The Court of Directors, recognizing the widespread impact of the famine, expanded the scope of the projected canal to encompass the entire Doab region.

This surge of enthusiasm, however, proved to be temporary. Auckland’s successor, Lord Ellenborough , was less inclined towards large-scale public works, and major funding for the project was withheld during his tenure. It was only in 1844, with the appointment of a new Governor-General, Lord Hardinge , that official support and financial resources were rekindled for the Ganges canal project. Although the intervening delay had seemingly impacted Cautley’s health, necessitating a return to Britain in 1845 for recuperation, his time in Europe allowed him to study contemporary hydraulic engineering practices in the United Kingdom and Italy. By the time of his return to India, more supportive leadership was in place, both in the North-Western Provinces under Lt. Governor James Thomason , and at the federal level in British India with Governor-General Lord Dalhousie . Canal construction, under Cautley’s guidance, then proceeded at full pace. The completed canal, stretching 560 kilometers (350 miles) with an additional 480 kilometers (300 miles) of branch lines, extended from the headworks in Haridwar. Below Aligarh , it divided into two branches, ultimately converging with the Yamuna (Jumna in the map) mainstem in Etawah and the Ganges in Kanpur (Cawnpore in the map). The Ganges Canal, which incurred a total capital expenditure of £2.15 million, was officially inaugurated in 1854 by Lord Dalhousie. Historian Ian Stone described it as “the largest canal ever attempted in the world, five times greater in its length than all the main irrigation lines of Lombardy and Egypt put together, and longer by a third than even the largest USA navigation canal, the Pennsylvania Canal .”

Dams and Barrages

A significant barrage was constructed at Farakka and inaugurated on April 21, 1975. This barrage is strategically located near the point where the river’s main flow enters Bangladesh, while the tributary Hooghly (also known as Bhagirathi) continues through West Bengal, passing Kolkata. The Farakka Barrage feeds the Hooghly branch via a 42-kilometer (26-mile) long feeder canal, and its water flow management has been a persistent source of contention with Bangladesh. The Indo-Bangladesh Ganges Water Treaty , signed in December 1996, aimed to address some of these water-sharing issues. Additionally, there is the Lav Khush Barrage situated across the Ganges River in Kanpur.

The Tehri Dam was constructed on the Bhagirathi , a tributary of the Ganges. It is located 1.5 kilometers downstream of Ganesh Prayag, where the Bhilangana River meets the Bhagirathi. The Bhagirathi is referred to as the Ganges only after its confluence at Devprayag. The construction of this dam in a seismically active region has been a subject of considerable controversy.

The Bansagar Dam was built on the Sone River , another tributary of the Ganges, serving dual purposes of irrigation and hydroelectric power generation. It has been proposed that floodwaters from the Ganges, along with Brahmaputra waters, could be channeled to the right-side basin areas, as well as to central and southern India, by constructing a coastal reservoir in the Bay of Bengal.

Economy

The Ganges Basin , with its exceptionally fertile soil, plays a crucial role in the agricultural economies of both India and Bangladesh. The Ganges and its tributaries provide a perennial source of irrigation to a vast area, supporting the cultivation of staple crops such as rice, sugarcane , lentils , oil seeds , potatoes, and wheat. Along the riverbanks, the presence of swamps and lakes facilitates the growth of crops like legumes, chilies, mustard, sesame, sugarcane, and jute. Fishing is also a significant activity along the river, despite its considerable pollution. Furthermore, major industrial centers like Unnao and Kanpur, situated on the riverbanks and characterized by a prevalence of tanning industries, contribute to the river’s pollution.

Tourism

Tourism is another vital economic activity linked to the Ganges. Three cities considered holy by Hindus – Haridwar, Prayagraj, and Varanasi – attract millions of pilgrims annually who seek purification by bathing in the Ganges, believed to cleanse sins and facilitate salvation. The river’s rapids in Rishikesh are also a popular destination for river rafting during the summer months, drawing adventure enthusiasts. Several cities, including Kanpur, Kolkata, and Patna, have developed riverfront walkways to enhance their tourist appeal.

Ecology and Environment

Human development, primarily driven by agriculture, has led to the near-complete replacement of the original natural vegetation within the Ganges basin. Over 95% of the upper Gangetic Plain has been degraded or transformed into agricultural land or urban areas. Only one substantial contiguous block of relatively intact habitat remains, stretching along the Himalayan foothills and encompassing national parks such as Rajaji National Park , Jim Corbett National Park , and Dudhwa National Park . As recently as the 16th and 17th centuries, the upper Gangetic Plain supported impressive populations of wild Asian elephants , Bengal tigers , Indian rhinoceros , gaurs , barasinghas , sloth bears , and Indian lions . In the 21st century, sightings of large wild animals are rare, primarily consisting of various deer species, wild boars , wildcats , and small numbers of Indian wolves , golden jackals , and red and Bengal foxes . Bengal tigers are now found only in the Sundarbans area of the Ganges Delta. The Sundarbans freshwater swamp ecoregion, however, is critically endangered. The Sundarbans mangroves also thrive in the Sundarbans region of the Ganges Delta. Threatened mammals in the upper Gangetic Plain include the tiger, elephant, sloth bear, and the four-horned antelope .

Numerous bird species inhabit the basin, including mynas , Psittacula parakeets, crows , kites , partridges , and fowls . Migratory birds like ducks and snipes travel across the Himalayas during winter, attracted in large numbers to wetland areas. The upper Gangetic Plain does not have any endemic bird species. The great Indian bustard and the lesser florican are considered globally threatened.

The natural forest cover of the upper Gangetic Plain has been so extensively altered that determining its original vegetation type with certainty is challenging. The remaining small patches suggest that much of the upper plains may have supported a tropical moist deciduous forest , with sal (Shorea robusta ) as the climax species .

A similar situation exists in the lower Gangetic Plain, which includes the lower Brahmaputra River. The lower plains feature more open forests, typically dominated by Bombax ceiba in association with Albizzia procera, Duabanga grandiflora , and Sterculia vilosa. Early seral forest communities exist that would eventually develop into climax forests dominated by sal (Shorea robusta) if natural succession were permitted. However, human activities often prevent forests from reaching climax conditions. Despite millennia of human settlement, the forests of the lower Gangetic Plain remained largely intact until the early 20th century. Today, only about 3% of the ecoregion retains its natural forest cover, with only one significant block remaining south of Varanasi. While over forty protected areas exist within the ecoregion, more than half of these are smaller than 100 square kilometers (39 sq mi). The fauna of the lower Gangetic Plain is comparable to that of the upper plains, with the addition of species such as the smooth-coated otter and the large Indian civet .

Fish

It is estimated that approximately 350 species of fish inhabit the entire Ganges drainage system, including several endemics . A comprehensive study conducted between 2007 and 2009 across the Ganges basin (including the river itself and its tributaries, but excluding the Brahmaputra and Meghna basins) recorded a total of 143 fish species, including 10 non-native introduced species . The most diverse orders are Cypriniformes (barbs and their relatives), Siluriformes (catfish), and Perciformes (perciform fish), each constituting approximately 50%, 23%, and 14% of the total fish species in the drainage, respectively.

Distinct variations exist across different sections of the river basin, but Cyprinidae remains the most diverse family throughout. In the upper section (roughly corresponding to the basin areas in Uttarakhand), over 50 species have been identified, with Cyprinidae accounting for nearly 80% of these, followed by Balitoridae (about 15.6%) and Sisoridae (about 12.2%). Fish are generally absent in Ganges basin sections above altitudes of 2,400–3,000 meters (7,900–9,800 feet). Typical genera found approaching these altitudes include Schizothorax , Tor , Barilius , Nemacheilus , and Glyptothorax . Approximately 100 species have been recorded from the middle section of the basin (roughly encompassing parts of Uttar Pradesh and Bihar), with over 55% belonging to the family Cyprinidae, followed by Schilbeidae (about 10.6%) and Clupeidae (about 8.6%). The lower section (covering parts of Bihar and West Bengal) includes major floodplains and is home to nearly 100 species. About 46% of these are in the family Cyprinidae, followed by Schilbeidae (about 11.4%) and Bagridae (about 9%).

The Ganges basin supports significant fisheries, but these have experienced a decline in recent decades. In the Prayagraj region, within the middle section of the basin, carp catches dropped from 424.91 metric tons in 1961–1968 to 38.58 metric tons in 2001–2006. Similarly, catfish catches decreased from 201.35 metric tons to 40.56 metric tons during the same periods. In the Patna region, in the lower section of the basin, carp catches fell from 383.2 metric tons to 118, and catfish from 373.8 metric tons to 194.48. Some of the fish commonly caught in these fisheries include catla (Catla catla), golden mahseer (Tor putitora), tor mahseer (Tor tor), rohu (Labeo rohita), walking catfish (Clarias batrachus), pangas catfish (Pangasius pangasius), goonch catfish (Bagarius), snakeheads (Channa), bronze featherback (Notopterus notopterus), and milkfish (Chanos chanos).

The Ganges basin is home to approximately 30 fish species listed as threatened, with the primary causes being overfishing (sometimes illegal), pollution, water abstraction, siltation , and the proliferation of invasive species . Among the threatened species is the critically endangered Ganges shark (Glyphis gangeticus). Several fish species undertake migrations between different sections of the river, but these movements can be impeded by the construction of dams.

Crocodilians and Turtles

The threatened gharial (Gavialis gangeticus), a large fish-eating crocodilian , is harmless to humans. The main stretches of the Ganges River are inhabited by the ghariel and the mugger crocodile (Crocodylus palustris), while the Ganges delta is home to the saltwater crocodile (C. porosus). A diverse array of aquatic and semi-aquatic turtles inhabit the Ganges basin, including the northern river terrapin (Batagur baska; found only in the lowermost section of the basin), the three-striped roofed turtle (B. dhongoka), the red-crowned roofed turtle (B. kachuga), the black pond turtle (Geoclemys hamiltonii), the Brahminy river turtle (Hardella thurjii), the Indian black turtle (Melanochelys trijuga), the Indian eyed turtle (Morenia petersi), the brown roofed turtle (Pangshura smithii), the Indian roofed turtle (Pangshura tecta), the Indian tent turtle (Pangshura tentoria), the Indian flapshell turtle (Lissemys punctata), the Indian narrow-headed softshell turtle (Chitra indica), the Indian softshell turtle (Nilssonia gangetica), the Indian peacock softshell turtle (N. hurum), and Cantor’s giant softshell turtle (Pelochelys cantorii; found only in the lowermost section of the Ganges basin). The majority of these species are severely threatened.

Ganges River Dolphin

The river’s most iconic faunal resident is the freshwater Ganges river dolphin (Platanista gangetica gangetica), which has been designated as India’s national aquatic animal . Historically, these dolphins were observed in large schools near urban centers in both the Ganges and Brahmaputra rivers. However, they are now seriously threatened by pollution, dam construction, and unsustainable fishing practices. Their population has dwindled significantly, and they have become extinct in the main tributaries of the Ganges. A 2012 survey by the World Wildlife Fund identified only around 3,000 individuals remaining in the combined catchment areas of both river systems.

The Ganges river dolphin is one of only five true freshwater dolphins globally. The other four include the baiji (Lipotes vexillifer) of the Yangtze River in China, which is now likely extinct; the Indus River dolphin of the Indus River in Pakistan; the Amazon river dolphin of the Amazon River in South America; and the Araguaian river dolphin (recognized as a distinct species in 2014) of the Araguaia–Tocantins basin in Brazil. While several marine dolphin species have ranges that extend into some freshwater habitats, these five are the only exclusively freshwater river and lake dolphins.

Effects of Climate Change

The Tibetan Plateau holds the world’s third-largest reserve of ice. Qin Dahe, a former head of the China Meteorological Administration, noted that while the accelerated melting and warmer temperatures might offer short-term benefits for agriculture and tourism, he issued a grave warning: “Temperatures are rising four times faster than elsewhere in China, and the Tibetan glaciers are retreating at a higher speed than in any other part of the world. … In the short term, this will cause lakes to expand and bring floods and mudflows. … In the long run, the glaciers are vital lifelines for Asian rivers, including the Indus and the Ganges. Once they vanish, water supplies in those regions will be in peril.”

In 2007, the Intergovernmental Panel on Climate Change (IPCC) stated in its Fourth Report that Himalayan glaciers feeding the river were at risk of melting by 2035. However, the IPCC has since withdrawn this specific prediction, as the original source admitted the assessment was speculative and the cited material was not peer-reviewed. The IPCC maintains its broader findings regarding the vulnerability of Himalayan glaciers to global warming, acknowledging the consequent risks to water flow into the Gangetic basin. Numerous studies suggest that climate change will impact water resources in the Ganges river basin, potentially leading to increased summer (monsoon) flows and peak runoff, thereby escalating the risk of flooding.

Pollution and Environmental Concerns

The Ganges suffers from extreme levels of pollution, exacerbated by the presence of approximately 400 million people living in close proximity to the river. Sewage discharged from numerous cities along its course, industrial waste, and religious offerings often wrapped in non-biodegradable plastics contribute significantly to the river’s contamination as it flows through densely populated areas. This problem is further compounded by the reliance of many impoverished communities on the river for their daily needs, including bathing, washing, and cooking. The World Bank estimates that the health costs associated with water pollution in India equate to three percent of the country’s GDP. It has also been suggested that eighty percent of all illnesses in India and one-third of all deaths can be attributed to water-borne diseases.

Varanasi, a city of one million people and a major pilgrimage site, discharges an estimated 200 million liters of untreated human sewage into the river daily, leading to alarmingly high concentrations of fecal coliform bacteria. According to official standards, water safe for bathing should not exceed 500 fecal coliforms per 100 ml. However, upstream of Varanasi’s ghats, the river water already contains 120 times this amount, with 60,000 fecal coliform bacteria per 100 ml.

Following the cremation of the deceased at Varanasi’s ghats, the bones and ashes are immersed into the Ganges. Historically, during cholera epidemics, thousands of uncremated bodies were cast into the Ganges, contributing to the spread of the disease. Even today, certain individuals—holy men, pregnant women, those suffering from leprosy or chicken pox , victims of snakebites, individuals who have committed suicide, the poor, and children under five—are not cremated but are instead left to float in the river, leading to decomposition. Furthermore, those unable to afford the substantial amount of wood required for complete cremation often leave behind partially burned body parts.

After passing through Varanasi, and receiving an additional 32 streams of raw sewage, the concentration of fecal coliforms in the river’s waters escalates dramatically from 60,000 to 1.5 million, with peak observed values reaching 100 million per 100 ml. Consequently, drinking or bathing in its waters poses a severe risk of infection.

Between 1985 and 2000, approximately ₹10 billion (around US$226 million), or less than 4 cents per person annually, was spent on the Ganga Action Plan . This initiative, described as “the largest single attempt to clean up a polluted river anywhere in the world,” has been widely deemed a failure. Various reasons have been cited for its ineffectiveness, including “environmental planning without proper understanding of the human-environment interactions,” the influence of Indian “traditions and beliefs,” “corruption and a lack of technical knowledge,” and a perceived lack of support from religious authorities. Some argue that religious leaders are reluctant to acknowledge the river’s pollution for fear of undermining its sacred status and their own authority, especially given the lucrative trade in religious ceremonies and bottled Ganga Jal.

In December 2009, the World Bank committed a loan of US$1 billion over the following five years to aid in the river’s cleanup. According to 2010 estimates from the Planning Commission, an investment of nearly ₹70 billion (approximately US$1.5 billion) is required to fully restore the river. In November 2008, the Ganges was declared India’s “National River,” a designation that facilitated the establishment of a National Ganga River Basin Authority with enhanced powers for planning, implementing, and monitoring measures to protect the river.

In July 2014, the Government of India launched an integrated Ganges development project named the Namami Gange Programme, allocating ₹2,037 crore for its implementation. The primary objectives of this program include improving water quality through pollution abatement and river rejuvenation, establishing essential infrastructure such as sewage treatment plants, enhancing river surface cleaning, promoting biodiversity conservation, undertaking afforestation efforts, and raising public awareness. In March 2017, the High Court of Uttarakhand declared the Ganges River a legal “person” , a landmark decision intended to bolster efforts to combat river pollution. However, as of April 6, 2017, the ruling’s enforceability has been questioned, with experts anticipating no immediate tangible benefits and some suggesting the judgment may be deficient for not hearing stakeholders from outside Uttarakhand.

The incidence of water-borne and enteric diseases, including gastrointestinal disease , cholera, dysentery , hepatitis A , and typhoid , among individuals who utilize the river’s waters for bathing, washing dishes, and brushing their teeth is alarmingly high, estimated at 66% annually. Recent studies by the Indian Council of Medical Research (ICMR) indicate that the river is so heavily contaminated with lethal pollutants and heavy metals that residents along its banks in Uttar Pradesh, Bihar, and Bengal exhibit higher cancer rates than elsewhere in the country. A study by the National Cancer Registry Programme under the ICMR revealed shocking findings, suggesting a strong correlation between residence near the Ganges and elevated cancer incidence, prompting a commitment to further in-depth investigation and reporting to the health ministry. In addition, numerous non-governmental organizations (NGOs) are actively involved in efforts to rejuvenate the Ganges. For instance, Vikrant Tongad, an environmental specialist from SAFE Green, filed a petition against Simbhaoli Sugar Mill (Hapur UP) to the National Green Tribunal (NGT). The NGT imposed a fine of ₹5 crore on the sugar mill and ₹25 lakhs on Gopaljee Dairy for discharging untreated effluents into the Simbhaoli drain.

Water Shortages

In tandem with escalating pollution, water scarcity in the Ganges is becoming increasingly severe. Certain sections of the river have already completely dried up. Near Varanasi, the river, once averaging a depth of 60 meters (200 ft), now measures only about 10 meters (33 ft) in some places.

To address its chronic water shortages, India relies on electric groundwater pumps, diesel-powered tankers, and coal-fired power plants. If the country continues to depend heavily on these energy-intensive, short-term solutions, the global climate will inevitably bear the consequences. India faces immense pressure to foster economic development while simultaneously safeguarding its environment—a formidable challenge that few, if any, nations have successfully navigated. The approach India takes towards managing its water resources will serve as a critical test of whether this dual objective is achievable.

Mining

Illegal mining in the Ganges river bed for construction materials like stones and sand has been a persistent issue in the Haridwar district of Uttarakhand, where the river first emerges onto the plains. This activity continues despite a ban on quarrying within the designated Kumbh Mela zone, which covers a 140 km² area in Haridwar.

In Art and Literature

The Ganges has been a profound source of inspiration in art and literature. William Purser’s painting, “The Ganges,” captures its entry into the plains near Haridwar , accompanied by a poetical illustration by Letitia Elizabeth Landon in Fisher’s Drawing Room Scrap Book, 1838. Similarly, J. M. W. Turner’s painting, “Colgong on the Ganges,” depicting the river near Kahalgaon , also featured a poetical illustration by Landon in Fisher’s Drawing Room Scrap Book, 1839.

See Also

• Environmental personhood
• Fair river sharing
• Ganga Pushkaram
• Gangaputra Brahmin
• Ganga Lake (Mongolia)
• List of most-polluted rivers
• List of rivers by discharge
• List of rivers by length
• List of rivers of India
• Mahaweli Ganga
• National Waterway 1
• Pollution of the Ganges
• River bank erosion along the Ganges in Malda and Murshidabad districts
• Sacred waters
• Sankat Mochan Foundation
• Ganga (goddess)
• Peninsular River System

Notes

• ^ a b Haberman (2006) highlights the dramatic launch of the Ganga Action Plan (GAP) by Prime Minister Rajiv Gandhi in 1985, with the ambitious goal of cleaning the 2,525 km river. Despite some improvements, many consider GAP a major failure, with environmental lawyer M. C. Mehta filing litigation claiming its collapse.
• ^ a b Gardner (2003) describes the Ganges as one of the world’s most polluted rivers, primarily due to sewage. The GAP, initiated in 1985, aimed for cleanup by 1993 but faced issues with poorly designed and maintained sewage treatment plants, leading to its “colossal failure.”
• ^ a b Sheth (2008) criticizes the Indian government’s ineffectiveness, citing the 20-year, $100 million Ganga Action Plan as a prime example of poor planning, corruption, and lack of technical knowledge, resulting in increased pollution.
• ^ a b c Singh & Singh (2007) detail the launch of the Ganga Action Plan in 1985, noting its failure to achieve significant pollution reduction. They attribute this to a lack of understanding of human-environment interactions and insufficient public and governmental engagement.
• ^ a b c d e Puttick (2008) elaborates on the pollution sources, including sewage, agricultural chemicals, and industrial waste, leading to severe health impacts. The failure of the GAP is blamed on mismanagement, corruption, and technological errors, with a lack of support from religious authorities also cited. The plight of river dolphins, once protected, is also highlighted as critically endangered due to pollution and habitat degradation.
• ^ Salman & Uprety (2002) provide details on the Ganges water dispute and the treaty signed between India and Bangladesh.
• ^ This note addresses the controversy surrounding the IPCC’s 2035 prediction on Himalayan glacier melt, noting its speculative nature and subsequent withdrawal by the IPCC, while reaffirming the general risk posed by global warming.
• ^ Bharati (2006) discusses the potential negative consequences of interlinking Indian rivers, particularly the risk of spreading contaminants from the polluted Gangetic basin to other regions, impacting water resources and agriculture.
• ^ Caso & Wolf (2010) chronologically note the launch of Phase I of the Ganga Action Plan in 1985 and its widespread perception as a failure by the early 1990s.
• ^ Dudgeon (2005) provides an audit of the Ganga Action Plan’s limited success after 15 years, estimating only 14% of the anticipated sewage treatment capacity was achieved, exacerbated by water abstraction for irrigation.
• ^ Tiwari (2008) argues that deeply ingrained social traditions and customs, coupled with a belief in the river’s inherent purity, have hindered environmental management efforts and contributed to the failure of the Ganga Action Plan.

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Further Reading

• Main article: Bibliography of Ganges
• Christopher de Bellaigue , “The River” (the Ganges; review of Sunil Amrith , Unruly Waters: How Rains, Rivers, Coasts, and Seas Have Shaped Asia’s History; Sudipta Sen, Ganges: The Many Pasts of an Indian