Identifying Non-Tributaries of the Ganges River

Understanding the river systems of India is crucial for geography studies. A tributary is a stream or river that flows into a larger river or lake. The Ganges River, one of the most important rivers in India, has numerous tributaries joining it from both the Himalayas and the peninsular plateau.

What is a Tributary?

A tributary is a smaller river or stream that feeds into a larger river. This contributes to the volume and flow of the larger river. The point where a tributary joins a larger river is called the confluence.

Major Tributaries of the Ganges River

The Ganges River system includes many major tributaries. Some of the well-known tributaries joining the Ganges are:

• Yamuna River
• Gomti River
• Ghaghara River
• Gandak River
• Kosi River
• Son River
• Damodar River

Let's examine the rivers mentioned in the options:

• Yamuna: The Yamuna is the longest and the second-largest tributary river of the Ganges by discharge. It originates from the Yamunotri Glacier in the Himalayas and joins the Ganges at Allahabad (Prayagraj). So, Yamuna is a tributary of the Ganges.
• Gomti: The Gomti River is a tributary of the Ganges River. It originates from Gomat Taal (officially Phulhaar Taal) near Pilibhit in Uttar Pradesh and joins the Ganges near Saidpur, Ghazipur. So, Gomti is a tributary of the Ganges.
• Kosi: The Kosi River is a trans-boundary river which flows through China, Nepal, and India. It is a major tributary of the Ganges River. It is also known as the 'Sorrow of Bihar' due to its frequent course changes and floods. So, Kosi is a tributary of the Ganges.
• Manas: The Manas River is a trans-boundary river in the Himalayan foothills between southern Bhutan and India. It is the largest tributary of the Brahmaputra River, joining it in Assam. The Manas River does not join the Ganges River.

Comparison of Rivers and their Main River

Based on the analysis, Yamuna, Gomti, and Kosi are all tributaries of the Ganges River, while the Manas River is a tributary of the Brahmaputra River.

Conclusion

Therefore, the river that is not a tributary of the River Ganges among the given options is Manas.

Revision Table: Ganges Tributaries

Additional Information on Indian Rivers

India has a vast network of rivers, broadly classified into Himalayan rivers and Peninsular rivers. Himalayan rivers are perennial (flow throughout the year) as they are fed by glaciers and rainfall. Peninsular rivers are largely dependent on rainfall and are often seasonal.

• The Ganges River basin is the largest in India.
• The Brahmaputra River is another major Himalayan river, flowing through India and Bangladesh. Like the Ganges, it has significant tributaries such as Subansiri, Kameng, Manas, Sankosh, Teesta (right bank), and Lohit, Dibang, Dhansiri, Kopili (left bank).
• Identifying which river is a tributary of which major river helps understand the drainage patterns and geography of a region.