Ghaghara in the context of "Sharda River"

Ayodhya (Hindi: Ayodhyā, pronounced [ɐˈjoːdʱjɐː] ) is a city situated on the banks of the Sarayu river in the Indian state of Uttar Pradesh. It is the administrative headquarters of the Ayodhya district as well as the Ayodhya division of Uttar Pradesh, India. Ayodhya became the top tourist destination of Uttar Pradesh with 110 million visitors in the first half of 2024, surpassing Varanasi.

The settlement was historically known as Sāketa until it was renamed to Ayodhya during the Gupta period. The early Buddhist and Jain canonical texts mention that the religious leaders Gautama Buddha and Mahavira visited and lived in the city. The Jain texts also describe it as the birthplace of five tirthankaras namely, Rishabhanatha, Ajitanatha, Abhinandananatha, Sumatinatha and Anantanatha, and associate it with the legendary Bharata Chakravarti. From the Gupta period onwards, several sources mention Ayodhya and Saketa as the name of the same city.

Mount Kailash (also Kailasa, Gang Tise and Gang Rinpoche or Kangrinboqê) is a mountain in Ngari Prefecture, Tibet Autonomous Region of China. It lies in the Gangdise Shan mountain range of the Transhimalaya, in the western part of the Tibetan Plateau. The peak of Mount Kailash is located at an elevation of 6,638 m (21,778 ft), near the western trijunction between China, India and Nepal.

Mount Kailash is located close to Manasarovar and Rakshastal lakes. The sources of four rivers: Indus, Sutlej, Brahmaputra, and Ghaghara lie in the vicinity of the region. Mount Kailash is sacred in Bon, Buddhism, Hinduism, and Jainism. People from China, India, Nepal, and other countries in the region undertake a pilgrimage to the mountain. The pilgrimage generally involves trekking towards Lake Manasarovar and a circumambulation of Mount Kailash.

Basti district is one of the districts of Uttar Pradesh state, India, and a part of Basti Division. Basti city is the district headquarters.

The district is bordered by Sant Kabir Nagar to the east and Gonda to the west. To the south, the Ghaghara River forms its boundary with Ayodhya and Ambedkar Nagar, while to the north, it shares its boundary with Siddharth Nagar district. The district covers an area of 2,688 square kilometers.

The West Rapti, also known as the Kuwano, is a river which drains Rapti Zone in Mid-Western Region, Nepal, then Awadh and Bhojpur-Purvanchal regions of Uttar Pradesh state, India before joining the Ghaghara. It is a major left bank tributary of the Ganges, and is also known as the Karnali in Nepal.

The West Rapti is notable for janajati ethnic groups – Kham Magar among its highland sources and then Tharu in Inner Terai Deukhuri Valley, for its irrigation and hydroelectric potential, and for recurrent floods that led to its nickname "Gorakhpur's Sorrow".

The Kosi or Koshi is a transboundary river which flows through China, Nepal and India. It drains the northern slopes of the Himalayas in Tibet and the southern slopes in Nepal. From a major confluence of tributaries north of the Chatra Gorge onwards, the Kosi River is also known as the Saptakoshi (Nepali: सप्तकोशी, saptakoshī) for its seven upper tributaries. These include the Tamur River originating from the Kanchenjunga area in the east and Arun River and the Sun Kosi from Tibet. The Sun Koshi's tributaries from east to west are the Dudh Koshi, Likhu Khola, Tamakoshi River, Bhote Koshi and Indravati. The Saptakoshi crosses into northern Bihar, India where it branches into distributaries before joining the Ganges near Kursela in Katihar district. The Kosi is the third-largest tributary of the Ganges by water discharge after the Ghaghara and the Yamuna.

The Kosi is 720 km (450 mi) long and drains an area of about 74,500 km (28,800 sq mi) in Tibet, Nepal and Bihar. In the past, several authors proposed that the river has shifted its course by more than 133 km (83 mi) from east to west during the last 200 years. But a review of 28 historical maps dating 1760 to 1960 revealed a slight eastward shift for a long duration, and that the shift was random and oscillating in nature.