Gandaki River
The Gandaki River, also known as the Narayani and Gandak, is one of the major rivers in Nepal and a left-bank tributary of the Ganges in India. Its total catchment area is, most of it in Nepal. In the Nepal Himalayas, the Gandaki is notable for its deep canyon. The basin also contains three mountains over, namely Dhaulagiri, Manaslu and Annapurna Massif. Dhaulagiri is the highest point of the Gandaki basin. In its upper reaches, the river is known as Kali Gandaki as it flows through the Mustang District and the famous Kali Gandaki Gorge in Nepal. When the river reaches the Terai plains of Nepal, it is referred to as the Narayani River. This name change typically occurs near the confluence with the Trishuli River at Devghat in Chitwan. Upon entering India, the river is known as the Gandak River.
River course
Nepal
The Kali Gandaki river source is at the border with Tibet at an elevation of at the Nhubine Himal Glacier in the Mustang region of Nepal.The headwaters stream on some maps is named the Chhuama Khola and then, nearing Lo Manthang, the Nhichung Khola or Choro Khola. The Kali Gandaki then flows southwest through a sheer-sided, deep canyon before widening at the steel footbridge at Chele, where part of its flow funnels through a rock tunnel, and from this point the now wide river is called the Kali Gandaki on all maps. In Kagbeni a major tributary named Johng Khola, Kak Khola or Krishnaa descends from Muktinath.
The river then flows southward through a steep gorge known as the Kali Gandaki Gorge, or Andha Galchi, between the mountains Dhaulagiri, elevation to the west and Annapurna, elevation to the east. If one measures the depth of a canyon by the difference between the river height and the heights of the highest peaks on either side, this gorge is the world's second deepest after the Yarlung Tsangpo Grand Canyon, is at an elevation of, which is lower than Annapurna I. The river is older than the Himalayas. As tectonic activity forces the mountains higher, the river has cut through the uplift.
South of the gorge, the river is joined by Rahughat Khola at Galeshwor, Myagdi Khola at Beni, Modi Khola near Kushma and Badigaad at Rudrabeni above Ridi Bazaar. The river then turns east to run along the northern edge of the Mahabharat Range. One of the largest hydroelectricity project in Nepal is located along this stretch of the river. Turning south again and breaking through the Mahabharats, Kali Gandaki is then joined by a major tributary, the Trishuli, at Devghat, which is larger than the Kali Gandaki. Gandaki is then joined by the East Rapti River draining the Inner Terai valley known as Chitwan. The Gandaki then crosses the Sivalik Hills into the Terai plains of Nepal. From Devghat, the river flows southwest of Gaindakot town. The river later curves back towards the southeast as it enters India where it is called the Gandak.
Below Gaindakot the river is known as the Narayani or Sapt Gandaki, for seven tributaries rising in the Himalaya or further north along the main Ganges-Brahmaputra divide. These are the Kali Gandaki, the Trishuli River, and the five main tributaries of the Trishuli known as the Daraudi, Seti, Madi, Marsyandi and Budhi Gandaki.
India
The entry point of the river at the Indo–Nepal border is also the confluence called Triveni with the rivers Pachnad and Sonha descending from Nepal. Pandai river flows into Bihar from Nepal in the eastern end of the Valmiki Sanctuary and meets Masan. The Gandak enters India at first in Maharajganj District of Uttar Pradesh for around ; it also passes through Kushinagar District before entering Bihar. The Gandak flows southeast across the Gangetic plain of Bihar state through West Champaran, Gopalganj, East Champaran, Saran, Muzaffarpur and Vaishali districts.From its exit from the outermost Siwaliks foothills to the Ganga, the Gandak has built an immense megafan comprising Eastern Uttar Pradesh and North Western Bihar in the Middle Gangetic Plains.
Glaciers, glacial lakes and glacial lake outburst floods
Glacier lakes, among the most hazardous features of high mountains, are usually formed behind dams of moraine debris left behind by retreating glaciers, a trend that is observed all over the world. Even though glacial lake outburst flood events have been occurring in Nepal for many decades, the Dig Tsho glacier outburst, which took place in 1985, has triggered detailed study of this phenomenon. In 1996, the Water and Energy Commission Secretariat of Nepal reported that five lakes were potentially dangerous, namely, Dig Tsho, Imja, Lower Barun, Tsho Rolpa, and Thulagi, all lying above. A recent study done by ICIMOD and UNEP reported 27 potentially dangerous lakes in Nepal. In ten of them GLOF events have occurred in the past few years and some have been regenerating after the event.The Thulagi glacier, located in the Upper Marsyangdi River basin, is one out of the two moraine-dammed lakes that was identified as a potentially dangerous lake as it may outburst.
Important towns
The important towns in the Indian part of the Gandak river are Valmikinagar - location of Gandak Barrage, Bagaha, Bettiah, Harinagar, Hajipur and Sonepur, near Patna.National Parks
of Nepal and Valmiki National Park of India are adjacent to each other in the vicinity of Valmikinagar around the Gandak Barrage.Chitwan National Park
Chitwan National Park covers an area of. Established in 1973, it is the oldest national park of Nepal. It was granted the status of a World Heritage Site in 1984. It is located in Chitwan, one of the Inner Terai Valleys of Nepal. The park is rich in flora and fauna, including Bengal Tigers and one of the last populations of single-horned Indian rhinoceros. The area used to be known as the Chitwan Valley. It was a place for big game hunting and until 1951 it was a hunting reserve. At the park there is canoeing, elephant rides, and guided jungle walks.Valmiki National Park
Valmiki Sanctuary covers about of forest and was the 18th tiger reserve established in India. It is ranked fourth in terms density of tiger population. Valmikinagar is located nearly from Bettiah in the northernmost part of the West Champaran district, Bihar, bordering Nepal. Valmikinagar is a small town with scattered habitation, mostly within the forest area and has a railroad station in the district of West Champaran, close to the railhead of Bagaha. It has diverse landscapes, sheltering rich wildlife habitats and floral and faunal composition with the prime protected carnivores and was included in the National Conservation Programme of the Project Tiger in the year 1994. According to a 1998 report by the Zoological Survey of India, the sanctuary has 53 mammals, 145 birds, 26 reptile and 13 amphibians and a Tiger Reserve.The notable species of wild fauna include: tiger, leopard, wild dog, wild boar, bison, bear, peacock, partridge, hornbill, hill mynah, woolly-necked stork, python, crocodile, deer, sambar, blue bull, barking deer, hog deer.
As per the Botanical Survey of India report of 1998 there are seven types of vegetation consisting of seven classes of forests; home to 84 species of trees, 32 shrubs and climbers and 81 herbs and grasses.
Religious significance
Between the Dhaulagiri and Annapurna mountain ranges, the Gandaki River flows through the village of Muktinath and by the Ashram of Pulaha. In ancient times, the mountain range surrounding Pulaha was called Salagiris due to the vast forests of sal trees. The stones found in this region are therefore called Saligrama – Silas. It has great significance to Hindus, particularly to Brahmins. Smarthas uses this as the replica of lord Narayana. Srivaisnavas, and Madhvacharya sects who consider the place where one can find saligrama silas in the river bed of the Gandaki River, and the Mukthinath temple as one of the 108 Divyakshetrams.Places of archaeological significance
Archaeologically important places around Valmikinagar are Lauriya-Nandangarh and Someshwar Fort.In Lauria block, about 1 km east of Nandan Garh, a lion pillar of Ashoka, made out of a single block of polished sandstone, measuring in height with a diameter of 35" at the base and 22" at the top, which is believed to be over 2,300 years old, is in an excellent condition. Its massiveness and exquisite finish furnish striking proof of the skill and resources of the masons of Ashokan age. Two more such pillars with their capitals removed have been discovered in Rampurwa village, close to Gandhi's Bhitiharawa Ashram in Gaunaha block. One of their capitals, the bull is now in the National Museum at New Delhi and the other, the lion, is at Calcutta Museum.
At Nandan Garh there are also Baudh stupas made out of bricks and about high which according to the authoritative source are Ashoka Stupas, in which ashes of Lord Buddha's funeral pyre are enshrined.
Someshwar Fort is situated in Narkatiaganj sub-division, near Nepal border, on top of Someshwar Hill at elevation. It is in a ruined state but its remains are well defined.
The Bhitiharawa Ashram of Mahatma Gandhi near Gaunaha in the eastern end of the Valmiki reserve. It is a village in Gaunaha block in Bihar from where Gandhiji started his freedom movement that came to be known as 'Champaran Satyagraha' in India history. The village houses the hut which is called Ashram and has become a place of Gandhian pilgrimage.