The Kali Gandaki rises in the Tibetan plateau north of the Himalayas in the Mustang District of Nepal, near the border with Tibet. The two headwaters of river, Nup Chhu and Shar Chhu ("West River" and "East River") meet near the town of Lo Manthang in upper Mustang. The river then flows southwest with the name of Mustang Khola. In Kagbeni a major tributory, Kak Khola, coming from Muktinath, meets Mustang Khola, and from there river is called the Kali Gandaki.
The river then flows southward through a steep gorge known as the Kali Gandaki Gorge, or Andha Galchi, between the mountains Dhaulagiri (8167 m) to the west and Annapurna (8091 m) 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, the Gorge is the world's deepest. The portion of the river between the Dhaulagiri and Annapurna massifs is at an elevation of between 1300 metres and 2600 metres, 5500 to 6800 metres lower than the two peaks. 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 Rahught Khola at Galeshwor, Myagdi Khola at Beni, Modi Khola near Kushma and Badigaad at Rudrabeni. The river then takes a right-angle turn and runs east along the northern edge of the Mahabharat Range. 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, Trishuli at Devighat, then by the (East) Rapti draining the Inner Terai valley known as Chitwan. The Gandaki then crosses the outermost foothills of the Himalayas -- Sivalik Hills -- into the Terai plains of Nepal. From Devighat, the river flows southwest and is known as Narayani or Sapt Gandaki. The river later curves back towards the southeast as it enters India.
The river flows southeast across the Gangetic plain of Bihar state, eventually merging with the Ganga near at Hajipur, or Patna.The entry point of the river at the Indo-Nepal border is also the confluence of Gandak, known as Triveni, with rivers Pachnad and Sonha also descending into India from Nepal.Pandai river flows into Bihar (India) from Nepal in the eastern end of the Valmiki Sanctuary and meets Masan. its drainage area in India is 7620 sqkm. After the river enters India at Triveni, it travels for a further length of 300 km before it joins the Ganga, just downstream of Hajipur at Sonepur (also known as Harihar Kshetra), near Patna.Bfore joining the river Ganga nar patna, it flows through Champaran, Sarang and Muzaffarpur districts. The total length of the river is 630 km out of which 330 km lies in Nepal and Tibet.
It is said that the Gandak River has shifted about 80 km to the east due to tilting in the last 5000 years (1). The Gandak plains, called the Gandak Megafan comprises Eastern Uttar Pradesh and North Western Bihar and lies in the Middle Gangetic Plains.
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 GLOF 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 (WECS) of Nepal reported that five lakes were potentially dangerous, namely, Dig Tsho, Imja, Lower Barun, Tsho Rolpa, and Thulagi, all lying above 4100 m. A recent study done by ICIMOD and UNEP (UNEP, 2001) 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 important towns in the Indian part of the Gandak river are the Valmikinagar(Bhainsalotan)- location of Gandak Barrage,Bagaha, Bettia (district hqrs & field directorate of Valmiki Tiger Project), Harinagar (Ramnagar),Hajipur(across the Ganga 10 km from Patna)and Sonepur (also Known as Harihar Kshetra), near Patna.
Chitwan National Park covers an area of 932 km² and is the oldest national park of Nepal established in 1973. It was granted the status of a World Heritage Site in 1984. It is located at the foot of the Himalayas in the Terai region, and the park is rich in flora and fauna, which include one of the last populations of single-horned Indian Rhinoceros (Rhinoceros unicornis) and the Bengal tiger. 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.
and 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 Botanical Survey of India report 1998 there are seven types of vegetation consisting of seven classes of forests; home to 84 species of trees (subtropical trees such as Sal,Sagwan,Bamboo, Cane,etc.), 32 shrubs and climbers and 81 herbs and grasses.
The ancient Valmiki Ashram (hermitage) and surrounding temples are located in the Chitwan National Park of Nepal.It is located at a distanace of about 7 km from Valmikinagar. It is approachable for pilgrimage only from Valmikinagar near Gandak Barrage, both from Nepal and India.
It is said that Valmiki Rishi (sage) wrote the great epic, "Ramayana" here. It is also believed to be the birthplace of Luv & Kush (the two sons of Lord Ram and his divine wife- Sita.The hermitage also has landmarks of Sita’s ‘Falahar’ (eating place), Meditation place of the great Sage-Valmiki, the place where the Ashwamedh horse was tied, Amrit (nectar of immortality) Kuan (well); Vishnu Chakra (disc), and the Hawan (Yagna) Kund (sacred square tructure to perform fire rituals).
In the periphery of 3 - 4 km around the Valmiki Ashram, the temples of importance are a) the Jatashankar (Shiv) Temple, 2) Nardevi (Sweta Kali)Temple (Form of Durga and 3) Kaleshwaran (an avatar of the God Shiva) Temple. Triveni Temple is located across the Gandak Barrage in Nepal, about 3 km from the Gandak Barrage.
These stones are naturally formed round stones, with circular or spiral markings and are fossil ammonite stones found in the rivers of Himalayas, in particular kinds of ocean sediments, which have been uplifted to the top of the Himalayas.
Located between the Dhaulagiri and Annapurna mountain ranges, the Gandaki River flows through the village of Saligrama or Muktinath and the Ashrama of Pulaha. In ancient times, the mountain range surrounding Pulaha was called Salagiris due to the vast forests of Sala (sal) trees. The stones found in this region are therefore called Saligrama – Silas (stones found only in the region of Saligrama. It has great significance to Hindus, particularly to the Shrivaishnava and the Madhva Sects who consider the place of availability of this stone in the river bed of the Gandaki river, and the Mukthinath temple as one of the 108 Divyakshetrams
or Thirthastanas (temples and celestial abodes of Vishnu) to be visited on a pilgrimage (at least once in their life time). At the pilgrimage site of Muktinath (3,710m) one wonders in amazement at the presence of 108 small waterfalls and mysterious natural gas fires, worshipped as Jwalamukhi (in Sanskrit).
For Tibetan Buddhists Muktinath-Chumig Gyatsa is a place of Dakinis, goddesses known as Sky Dancers. It is of great importance for Buddhists that Chumig Gyatsa is one of the 24 Tantric places.
The Tibetan Buddhist tradition states that for this reason Guru Rinpoche, also known as Padmasambhava, the founder of Tibetan Buddhism had meditated at Muktinath on his way to Tibet. It is one of the 51 Sakthi peetams.
The particular site in the course of the river where the stones become sacred is known as Chakra-Tirtha.The sanctity of this site is said to extend to three yojanas (24 miles) all round.
There is also a river called Chakra-nadi (now called Kagbeni), which flows towards Gandaki and joins it. This river is described in Garuda purana as created by Brahma; and the great peak to the north of the river is said to contain the presence of Vishnu. All the stones found in the river as well as in the mountain are believed to bear the marks of Vishnu. The entire area (including streams and the mountainside to the north of Muktinath) covers as many as twelve yojanas (96 miles), according to the Puranic account. Among the Saligrama stones, some are from the waters (jalaja) and some are from the mountainside (sthalaja). Puranic texts testify that the sacred stones are what are found in the river, and not what are taken out of the rock on its banks.
Vaishali, which was the capital of one of the states in northern India during Buddha's lifetime, to Nalanda, which was the seat of a celebrated Buddhist monastic university in the 5th–12th century.
In Lauria block
, about 1 km east of Nandan Garh, a lion pillar of Ashoka, made out of a single block of polished sand stone, measuring in height with a diameter of 35" at the base and 22" at the top, which is believed to be over 2300 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 (Buddha) Stupas (huge mounds) 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 Narkatiyaganj sub-division, near Nepal border, on top of Someshwar Hill at . above M.S.L. 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.
It is a recent chance discovery (by a villager) of an extraordinary art treasure that lay hidden from the world for centuries – in a partially collapsed cave (at 3,400 m elevation) containing the 12th to 14th century collection of 55 exquisite cave paintings depicting the life of Buddha. A Mr Fieni, a member of team of Italian, US and Nepalese conservators and archaeologists who have explored thse findings, has said that "Finding the cave was almost like a miracle, --- Unlike the murals in the monastery, the Mustang cave paintings do not reveal a Tibetan but a strong Indian influence, including the animals they depict - leopard, tiger, monkey and deer," said. "In fact, the style evokes the fabulous cave paintings of Ajanta, which predate the Mustang caves by several centuries." The exploration team has called it "the snow leopard cave" as the animal's footprints were found inside. The simultaneous discovery of ancient Tibetan manuscripts in nearby caves has also led to speculation that the caves might have been a teaching retreat on the lines of the Buddhist university in Nalanda.
Mustang in Gandkai river valley,called the Kingdom of Lo is part of the Kingdom of Nepal and one of its districts, in the north-east, bordering China (Tibet) on the Central Asian plateau between the Nepalese provinces of Dolpo and Manang. It is roughly 80 km long (north-south) and 45 km at its widest, and is at an elevation of over 2500 m.
In Nepal, Sapta Gandaki alone has a huge hydropower potential of 20,650 MW (economic exploitable potential is 5,270 MW) out of a total estimated potential of 83,290 MW (economically exploitable potential is 42,140 MW). The country has so far been able to generate only around 600 MW of hydropower
out of which the Gandak basin projects contribute more than 44% - 266 MW. The Hydropower projects built are the Trisuli at Nuwakot (21 MW), Devighat at Nuwakot (14 MW), Pokhra (1MW) and Western Gandak HEP, at Nawalparasi (15) MW, - financed by the Govt. of India - , Marsyangdi at Tanahu (69 MW), Kali Gandaki at Syanja (144 MW) and Syange 2 MW. Middle Marsyangdi HE Project (70 MW) at Lamjung is under final stage of construction. Several major projects are on the anvil for implementation in the near future. With Govt. of Nepal now according priority to private-sector participation in a multi-pronged approach, the pace of Hydropower development will get accelerated.
Recently, a major Indian Investor (a renowned firm) of India has entered into a share purchase and joint venture agreement with a Nepalese firm to acquire 80 per cent stake of Nepalese Company (P) for development of the Upper Marsyangdi HEP (250MW). Achieving the economically exploitable potential need would no more be a mirage 
Reportedly there are several other major projects being pursued by the Govt. of Nepal for private sector participation on IPP basis.
Some modification was subsequently made in this agreement in 1964 for the protection of Nepal’s riparian rights. Basically there is an agreed share of water for ‘western Canal System including a power station in Nepal and Eastern canal System. As a part of this bilateral agreement, the Gandak Barrage, a part of Gandak Project, has been built (1968/69.) over the Gandak river for providing irrigation to Nepal, U.P. and Bihar.
The irrigation potential of this project is 11,510 km², spread in the district of West Champaran, East Champaran, Muzaffarpur, Samastipur, Saran, Siwan & Gopalganj. The Eastern Gandak Canal Project was taken up in 1960 and Main Canal system was completed in 1975 for flow irrigation in Nepal for the gross commanded area estimated to be .A hydroelectric generating station with an installed capacity of 15 MW (3x5 MW) has also been constructed and commissioned on the by pass to Eastern Gandak Canal.
2. "Waters of Hope" (1993), B.G.Vargehese, New Delhi
3. A Framework for Sustainable Development of the Ganges- Brahmaputra- Meghna (GBM Region), Proceedings of Conference held in Dhaka, 4-5 December 1999–Nepal Water Vision in the GBM Regional Framework, Institute for Integrated Studies, Kathmandu).[
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