Understanding Indian River Systems: Himalayan vs. Peninsular Rivers

The passage discusses the two major river systems of India: the Himalayan rivers and the Peninsular rivers. It highlights their origins and characteristics, explaining how they differ.

Key Differences Based on the Passage:

• Origin: Himalayan rivers originate from the Himalayas, while Peninsular rivers mostly originate in the Western Ghats or central highlands.
• Perennial vs. Seasonal: Most Himalayan rivers are perennial (water throughout the year, from rain and snowmelt). Peninsular rivers are largely seasonal (flow dependent on rainfall).
• Course Length: Himalayan rivers have long courses. Peninsular rivers have shorter and shallower courses.
• Erosional/Depositional Features: Himalayan rivers perform intensive erosion in upper courses and form features like meanders, oxbow lakes, levees, and deltas in lower courses. Peninsular rivers have less intensive erosional activity due to shorter courses.

Identifying the Rivers Mentioned:

The passage specifically names examples for each type:

• Major Himalayan rivers mentioned: the Indus, the Ganga, and the Brahmaputra.
• Examples of Peninsular rivers mentioned: the Godavari, Kaveri, and Krishna.

Analyzing the Question:

The question asks: "Which of these is NOT a Himalayan river?"

We need to look at the options provided and see which one is not listed among the major Himalayan rivers according to the passage.

Examining the Options:

1. Brahmaputra: The passage lists Brahmaputra as a major Himalayan river.
2. Ganga: The passage lists Ganga as a major Himalayan river.
3. Indus: The passage lists Indus as a major Himalayan river.
4. Godavari: The passage lists Godavari as an example of a Peninsular river.

Based on the text, the Godavari is a Peninsular river, not a Himalayan river.

Conclusion

The Godavari is identified in the passage as a Peninsular river. The Indus, Ganga, and Brahmaputra are identified as major Himalayan rivers. Therefore, the river that is NOT a Himalayan river among the options is the Godavari.

Revision Table: River Systems of India

Additional Information: River Systems and Features

A river system is a river along with all its tributaries. Tributaries are smaller rivers or streams that flow into a larger river. The Indus, Ganga, and Brahmaputra river systems are the largest in the Himalayas.

Perennial rivers have a continuous flow of water throughout the year because they receive water from both rainfall and the melting of snow and glaciers in the mountains. This makes their flow more consistent.

Seasonal rivers, also known as non-perennial rivers, depend primarily on rainfall. Their water levels rise during the monsoon season and can significantly reduce or even dry up during the dry season.

River Features:

• Gorges: Deep, narrow valleys carved by rivers in their upper mountainous course. The Himalayan rivers cut through mountains making gorges.
• Meanders: Large bends or loops formed by a river in its middle and lower course as it flows over flat plains.
• Oxbow Lakes: Crescent-shaped lakes formed when a meander loop is cut off from the main river channel.
• Levees: Natural embankments formed along the banks of a river by the deposition of silt during floods.
• Deltas: Triangular landforms created at the mouth of a river where it meets a larger body of water (like a sea or ocean), formed by the deposition of sediment carried by the river. Well-developed deltas are characteristic of many large rivers.