Indus River and its Tributaries

The Indus River is one of the longest rivers in Asia, flowing through the countries of India, Pakistan, and China. It is formed by the confluence of several tributaries that originate from the Himalayas and Karakoram ranges. The river system plays a crucial role in the agriculture and economy of the region.

Tributaries of the Indus River:

1. Shyok River: The Shyok River is a tributary of the Indus, located in the Ladakh region of India. It originates from the Rimo Glacier and joins the Indus near Skardu in Pakistan. The river passes through the scenic Nubra Valley and contributes to the flow of the Indus.

2. Gilgit River: The Gilgit River is another important tributary of the Indus. It originates from the glaciers of the Karakoram range and flows through the Gilgit-Baltistan region of Pakistan. The river joins the Indus near the city of Gilgit, contributing to the overall water supply of the Indus Basin.

3. Zaskar River: The Zaskar River is a major tributary of the Indus, originating from the Zaskar Range in Jammu and Kashmir, India. It flows through the Zaskar Valley and merges with the Indus near the town of Nimu in Ladakh. The river carries significant water volume, especially during the summer months when the glaciers melt.

The Incorrect Option:

4. Luni River: The Luni River is NOT a tributary of the Indus River. It is a significant river in the Indian state of Rajasthan. The Luni originates in the Aravalli Range and flows through the Thar Desert before eventually merging into the Rann of Kutch in Gujarat. The Luni River is not connected to the Indus River system and has its own independent basin.

Therefore, the correct answer is option 'D' - Luni. It is not a tributary of the Indus River.