Ravi River in the context of "Harappa"

The Indus (/ˈɪndəs/ IN-dəs) is a transboundary river of Asia and a trans-Himalayan river of South and Central Asia. The 3,180 km (1,980 mi) river rises in western China, flows northwest through the disputed Kashmir region, first through the Indian-administered Ladakh, and then the Pakistani-administered Gilgit-Baltistan, bends sharply to the left after the Nanga Parbat massif, and flows south-by-southwest through Pakistan, before bifurcating and emptying into the Arabian Sea, its main stem located near the port city of Karachi.

The Indus River has a total drainage area of circa 1,120,000 km (430,000 sq mi). Its estimated annual flow is around 175 km/a (5,500 m/s), making it one of the 50 largest rivers in the world in terms of average annual flow. Its left-bank tributary in Ladakh is the Zanskar River, and its left-bank tributary in the plains is the Panjnad River which is formed by the successive confluences of the five Punjab rivers, namely the Chenab, Jhelum, Ravi, Beas, and Sutlej rivers. Its principal right-bank tributaries are the Shyok, Gilgit, Kabul, Kurram, and Gomal rivers. Beginning in a mountain spring and fed with glaciers and rivers in the Himalayan, Karakoram, and Hindu Kush ranges, the river supports the ecosystems of temperate forests, plains, and arid countryside.

The Pir Panjal Range (/piːr pʌnˈdʒɑːl/) is a range of mountains in the Lower Himalayan region located in the Western Himalayas of the northern Indian subcontinent. It runs southeast to northwest between the Beas and Neelam/Kishanganga rivers, in the Indian state of Himachal Pradesh and Indian-administered union territory of Jammu and Kashmir, with its northwestern end extending into territory administered by Pakistan. The Himalayas show a gradual elevation towards the Dhauladhar and Pir Panjal ranges. Pir Panjal is the largest and westernmost range of the Lesser Himalayas. Near the bank of the Sutlej River, it dissociates itself from the main Himalayan range and forms a divide between the Beas and Ravi rivers on one side and the Chenab on the other. Further west, the Pir Panjal range forms the southwestern boundary of the Kashmir Valley, separating it from the hills of Jammu region, forming a divide between the Jhelum River and Chenab River.

The Punjab Plain is a large alluvial plain in northwestern India and eastern Pakistan. The plain includes the Indian states of Punjab and Haryana and the union territory of Delhi, excluding the Shahdara district, and the eastern part of Pakistani Punjab. This plain is around 200–300 meters above mean sea level. The plain is the western part of the Indo-Gangetic Plain, and is bounded by the Sivalik Hills in the north, the Yamuna River in the east, the Thar Desert of Rajasthan to the south, the Ravi River to the northwest and Sutlej River to the southwest. The plain is extensively farmed for cereals and cotton.

The land formed of alluvium in between two rivers known as Doab is found here. 'Doab' is made up of two words — 'do' meaning two and 'ab' meaning water. Similarly 'Punjab', is also made up of two words — 'Punj' meaning five and 'ab' meaning water.

The Panjnad River (Urdu: پنجند, Saraiki: پنجنَںد), also locally known as Panjnand (پنجنںد), is a river at the extreme end of the Bahawalpur district in the Punjab province of Pakistan. The name Panjnad is derived from Persian panj ("five") and Sanskrit nadī́ ("river") which means "five rivers". The Panjnad River is formed by the successive confluence or merger of the five main rivers of Punjab: the Jhelum, Chenab, Ravi, Beas and Sutlej.

The Jhelum and the Ravi rivers join the Chenab River; the Beas River joins the Sutlej River; and the Sutlej and the Chenab rivers join to form the Panjnad River. It is 10 miles north of Uch Sharif in the Muzaffar Garh district. The combined stream runs southwest for approximately 44 miles and joins the Indus River at Mithankot. The Indus eventually drains into the Arabian Sea. A barrage on Panjnad has been erected which provides irrigation channels for Punjab and Sindh provinces south of the Sutlej River and east of the Indus River.

The Chenab River is a major river in India and Pakistan, and one of the five major rivers associated with the Punjab region. It is formed by the union of two headwaters, the Chandra and Bhaga, which rise in the upper Himalayas in the Lahaul region of Himachal Pradesh, India. The Chenab then flows through the Jammu region of Jammu and Kashmir, India, into the plains of Punjab, Pakistan, where it joins the Sutlej River to form the Panjnad, which ultimately flows into the Indus River at Mithankot.

The waters of the Chenab were allocated to Pakistan under the terms of the Indus Waters Treaty. India is allowed non-consumptive uses such as power generation. The Chenab River is extensively used in Pakistan for irrigation. Its waters are also transferred to the channel of the Ravi River via numerous link canals.

Punjab (/pʌnˈdʒɑːb/ pun-JAHB; Punjabi: pañjāba, pronounced [pəɲˈd͡ʒaːb] ) is a state in northwestern India. Forming part of the larger Punjab region of the Indian subcontinent, the state is bordered by the Indian states of Himachal Pradesh to the north and northeast, Haryana to the south and southeast, and Rajasthan to the southwest; by Indian-administered Jammu and Kashmir to the north and Chandigarh to the east. To the west, it shares an international border with the identically named Pakistani province of Punjab, and as such is sometimes referred to as East Punjab or Indian Punjab for disambiguation purposes. The state covers an area of 50,362 square kilometres (19,445 square miles), which is 1.53% of India's total geographical area, making it the 19th-largest Indian state by area out of 28 Indian states (20th largest, if Union Territories are considered). With over 27 million inhabitants, Punjab is the 16th-largest Indian state by population, comprising 23 districts. Punjabi, written in the Gurmukhi script, is the most widely spoken and the official language of the state. The main ethnic group are the Punjabis, with Sikhs (57.7%) and Hindus (38.5%) forming the dominant religious groups. The state capital, Chandigarh, is a union territory and also the capital of the neighboring state of Haryana. Three of the five traditional Punjab rivers — the Sutlej, Beas, and Ravi — flow through the state.

The history of Punjab has witnessed the migration and settlement of different tribes of people with different cultures and ideas, forming a civilisational melting pot. The ancient Indus Valley Civilisation flourished in the region until its decline around 1900 BCE. Punjab was enriched during the height of the Vedic period, but declined in predominance with the rise of the Mahajanapadas. The region formed the frontier of initial empires during antiquity including Alexander's and the Maurya empires. It was subsequently conquered by the Kushan Empire, Gupta Empire, and then Harsha's Empire. Punjab continued to be settled by nomadic people; including the Huna, Turkic and the Mongols. Punjab came under Muslim rule c. 1000 CE, and was part of the Delhi Sultanate and the Mughal Empire. Sikhism, based on the teachings of Sikh Gurus, emerged between the 15th and 17th centuries. Conflicts between the Mughals and the later Sikh Gurus precipitated a militarisation of the Sikhs, resulting in the formation of a confederacy after the weakening of the Mughal Empire, which competed for control with the larger Durrani Empire. This confederacy was united in 1801 by Maharaja Ranjit Singh, forming the Sikh Empire.

Samudragupta (Gupta script: Sa-mu-dra-gu-pta; 318–375) was the second emperor of the Gupta Empire of ancient India. As a son of the Gupta emperor Chandragupta I and the Licchavi princess Kumaradevi, he inherited the kingdom and transformed it into a vast empire through his military campaigns. His reign was marked by political expansion, administrative efficiency, and cultural patronage, particularly of Sanskrit literature and Vaishnavite Hindu rituals. Samudragupta’s legacy as a warrior, administrator, and benefactor of scholars contributed to the golden age of India.

The Allahabad Pillar inscription, a prashasti (eulogy) composed by his courtier Harisena, credits him with extensive military conquests. It suggests that he defeated several kings of northern India, and annexed their territories into his empire. He also marched along the south-eastern coast of India, advancing as far south as Kanchipuram in the Pallava kingdom. In addition, he subjugated several frontier kingdoms and tribal oligarchies. At the height of his power, his empire under his direct control extended from Ravi River in the west (present-day Punjab) to the Brahmaputra River in the east (present-day Assam), and from the Himalayan foothills in the north to central India in the south-west; several rulers along the south-eastern coast were also his tributaries. The inscription also states that many neighbouring rulers tried to please him, which probably refers to his friendly relations with them.