Jhelum River in the context of "Salt Range"

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.

Around 535 BCE, the Persian king Cyrus the Great initiated a protracted campaign to absorb parts of India into his nascent Achaemenid Empire. In this initial incursion, the Persian army annexed a large region to the west of the Indus River, consolidating the early eastern borders of their new realm. With a brief pause after Cyrus' death around 530 BCE, the campaign continued under Darius the Great, who began to re-conquer former provinces and further expand the Achaemenid Empire's political boundaries. Around 518 BCE, the Persian army pushed further into India to initiate a second period of conquest by annexing regions up to the Jhelum River in what is today known as Punjab. At peak, the Persians managed to take control of most of modern-day Pakistan and incorporate it into their territory.

The first secure epigraphic evidence through the Behistun Inscription gives a date before or around 518 BCE. Persian penetration into the Indian subcontinent occurred in multiple stages, beginning from the northern parts of the Indus River and moving southward. As mentioned in several Achaemenid-era inscriptions, the Indus Valley was formally incorporated into the Persian realm through provincial divisions: Gandāra, Hindush, and Sattagydia.

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 Kashmir Valley, also known as the Vale of Kashmir, is an intermontane valley in the northern part of Indian-administered Jammu and Kashmir. The valley is surrounded by the ranges of the Himalayas, bounded on the southwest by the Pir Panjal Range and on the northeast by the Greater Himalayan Range. It is approximately 135 km (84 mi) long and 32 km (20 mi) wide, and drained by the Jhelum River. It falls entirely within the Kashmir Division of Jammu and Kashmir.

The Pothohar Plateau (Punjabi: پوٹھوہار پَٹھوار, romanized: Pо̄ṭhoā̀r Paṭhwār; Urdu: سطح مرتفع پوٹھوہار, romanized: Satāh Murtafā Pо̄ṭhohār), also known as the Northern Punjab Plateau, is a plateau within the Sagar Doab of north-western Punjab in Pakistan. It is located between the Indus and Jhelum rivers.

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 Western Himalayas are the western half of the Himalayas, in northwestern India and northern Pakistan. Four of the five tributaries of the Indus River in Punjab (Beas, Chenab, Jhelum, and Ravi) rise in the Western Himalayas; while the fifth, the Sutlej cuts through the range after rising in Tibet.

Included within the Western Himalayas are the Zanskar Range, the Pir Panjal Range, and the Dhauladhar Range, and western parts of the Sivalik Range and the Great Himalayas. The highest point is Nanga Parbat (26,660 feet or 8,126 metres), at the northwestern end of the region. It is part of the Himalayan biodiversity hotspot.