The total length of the Indus River is approximately 3180 kilometers. It is the longest river in Pakistan and one of the major rivers of the Indian subcontinent. The Indus River plays a key role in the country’s agriculture, economy, and water supply.

The river originates in the Tibetan Plateau near Lake Mansarovar in China. From there, it flows through India’s region of Ladakh and enters Pakistan through Gilgit-Baltistan. It then travels through Khyber Pakhtunkhwa, Punjab, and Sindh before finally reaching the Arabian Sea near Karachi.

The Indus River is the backbone of Pakistan’s irrigation system. It supports one of the largest canal-based irrigation networks in the world. Many important dams and barrages such as Tarbela Dam, Sukkur Barrage, and Guddu Barrage are built on the Indus to store water, produce electricity, and support agriculture.

Important facts:
- Total length: 3180 km (approximately)
- Source: Tibetan Plateau (China)
- Enters Pakistan: Through Gilgit-Baltistan
- Flows through: Khyber Pakhtunkhwa, Punjab, Sindh
- Ends at: Arabian Sea, near Karachi

The Indus River has great historical and cultural importance as well. The ancient Indus Valley Civilization, one of the world’s oldest civilizations, developed along its banks. Even today, the river remains vital for the lives and livelihoods of millions of people in Pakistan.

This question is important for students preparing for competitive exams and for anyone interested in the geography of Pakistan.