As we all know that Geography is very important for UPSC and other competitive exams, the drainage systems of India are also important. Candidates can read other NCERT Geography notes to prepare for UPSC IAS Prelims and Mains exam.

The drainage systems of India can be divided into two major groups such as the Himalayan rivers; and the Peninsular rivers. In the following article, you will find complete information on each of the west-flowing Peninsular rivers of India.

West Flowing Rivers of Peninsular India

• In Peninsular India, the west-flowing rivers are smaller and less in number compared to east-flowing rivers.
• The major west-flowing rivers in Peninsular India are the Narmada river and the Tapi river.
• These rivers flow in the west direction due to faults like linear rift, Rift Valley.
• All the west-flowing rivers in Peninsular India flow parallel to Vindhyas and Satpuras.

Narmada River (Reva River)

• It is located mainly in Madhya Pradesh.
• The Narmada river is also known as the Reva river but it is previously known as Narbada.
• Narmada river is the largest west-flowing river in peninsular India.
• The river originates from the Maikala range near Amarkantak Plateau in the Anuppur district of Madhya Pradesh.
• It is the Life Line of Madhya Pradesh and Gujarat due to huge contributions in both of these states.
• It flows westwards over a length of 1,312 km (815.2 mi) before entering the Arabian Sea.
• The area of the Narmada river is 1 Lakh Sq.km.
• The river flows through the following states Madhya Pradesh, Maharashtra, and Gujarat.
• The average annual flow of the Narmada river is 33,210,000 acre-feet (40.96 km3).
• Maheshwar Dam, Sardar Sarovar Dam, and Indira Gandhi Sagar Dam are the major hydropower projects of the Narmada river.
• This river has two waterfalls namely Mandhar and Dardi which are 12 meters.

Tributaries of Narmada River

• Left Narmada Tributaries: Burhner River, Banjar River, Sher River, Kaveri River, Kundi River, Goi River, Karjan River, Dudhi River, Shakkar River, Tawa River, Ganjal River, Chhota Tawa River.
• Right Narmada Tributaries: Hiran River, Tendoni River, Uri River, Hatni River, Orsang River, Choral River, Kolar River, Man River.

Tapti/ Tapi River

• Tapti/ Tapi is the 2nd largest west-flowing river in peninsular India.
• The Tapti/ Tapi River is located in Madhya Pradesh.
• It originates from the Multai reserve forest in Madhya Pradesh.
• This river rises in the central region of India between Narmada and Godavari rivers and it flows to the Arabian Sea in the west.
• The area of this river is 65,000 Sq.km.
• The river flows through the following states of Madhya Pradesh, Maharashtra, and Gujarat.
• The length of the Tapi/ Tapti river is about 724 km.
• Ukai Dam, Kakrapar Dam, Girna Dam are the major projects on this river.
• The major tributaries of the Tapti River are Mona, Arunavati, the Gomai, the Vaghur, the Amravati, the Purna, the suki, and the Sipna.

Mahi River

• Mahi river is also known as Mahisagar.
• The river Mahi originates in the Dhar district of Madhya Pradesh.
• This river flows through the following states Madhya Pradesh, Rajasthan, and Gujarat.
• The river drains into the Gulf of Cambay of the Arabian Sea in the west.
• It is bounded by Aravalli hills in the north and in the north-west and Malwa Plateau in the east and the Vindhyas in the south.
• This river flows to a length of 583 Km.
• The area of the Mahi basin is 34,842 sq km.
• Kadana Dam and Mahi Bajaj Sagar dam are the major Hydro Power stations situated on this river.
• The textile factories in Surat and paper and newsprint factories at Nepanagar are the important industries in the Tapti basin.
• The cotton textile, paper, newsprint, drugs, and pharmaceutical industries are present in the Mahi basin.

Sabarmati River

• The two streams Sabar and Hathmati combine to form the Sabarmati river.
• This river flows through the following states Rajasthan and Gujarat.
• Sabarmati river originates in Tepur in the Udaipur district of Rajasthan.
• The area of the Sabarmati basin is 21,674 sq km.
• The length of the Sabarmati river is about 371 km.
• The major tributaries of the Sabarmati river are the Wakal river, the Hathmati river, the water river, the Harnav river, and the Sei river.
• The major projects situated on this Sabarmati river are the Sabarmati reservoir, Hathmati reservoir, and Meshwo reservoir project.
• Textiles, leather and leather goods, plastic, rubber goods, paper, newsprint, automobile, machine tools, drugs, and pharmaceuticals, etc. are the important industries situated on this Sabarmati basin.

Luni River

• Luni is an endorheic river.
• The Luni river was first known as the Sabarmati.
• This river originates in the Pushkar valley which is the Western slopes of the Aravalli ranges near Ajmer.
• The Luni River is the only largest river in the Thar desert which is in the northwest region of India.
• The area of the Luni river is 37,363 km².
• The Luni river flows to a distance of 495 km.
• The main tributaries of the Luni river are Jawai, Sukri, Guhiya, Bandi, and Jojari rivers.
• The dams of Luni river are Sipu dam, Dantiwada dam, Jaswant Sagar Dam, Jawai dam, Sardar Samand dam.
• The Jawai dam and Sardar Samand dam are the two major irrigation projects on the Luni river.

Tawa River

• Tawa river is the longest tributary of the Narmada river.
• This river rises from the Satpura Range of Betul in Madhya Pradesh.
• The length of the Tawa river is 117 Km.
• Tawa dam is constructed on this river.

Sharavathi River

• Sharavathi river is an important river in the Karnataka state flowing towards the west.
• The Sharavathi River originates in Thirthahalli taluk of Shimoga district in Karnataka and ends in the Arabian Sea.
• The area of the Sharavathi river is 2,985 sq. km.
• The length of this river is 128 Km.
• The Sharavathi River creates Jog Falls in the Shivamogga district which has a height of 253 meters.
• Nandihole, Haridravathi, Mavinahole, Hilkunji, Yennehole, Hurlihole, and Nagodihole are the major tributaries of the Sharavathi river.
• The Sharavathi river basin is rich in biodiversity.
• The Sharavathi river has two dams namely the Linganamakki dam and the Gerusoppa dam.
• The Jog or Gersoppa Falls which is made by the Sharavathi river is the most famous waterfall all over India.

West Flowing Rivers of the Sahyadris (Western Ghats)

• In the western ghats, there are about six hundred small streams originating and also flowing into the Arabian Sea in the west.
• From the southwest monsoons, the western slopes of the Western Ghats receive heavy rainfall due to which a large number of streams rise and flow in the west.

FAQs

MCQs

1. Which river is NOT a west-flowing river in Peninsular India?

A) Narmada
B) Tapi
C) Godavari
D) Mahi

2. What is the primary source of the Narmada River?

A) Amarkantak Plateau
B) Western Ghats
C) Vindhya Range
D) Satpura Range

3. Which of the following rivers flows through a rift valley?

A) Godavari
B) Krishna
C) Narmada
D) Kaveri

4. What environmental issue do west-flowing rivers often face?

A) Deforestation
B) Soil erosion
C) Pollution
D) All of the above

5. Which west-flowing river is known for its scenic beauty and waterfalls?

A) Mahi
B) Godavari
C) Narmada
D) Tapi

GS Mains Questions and Model Answers

Q1: Discuss the role of west-flowing rivers in the irrigation systems of Peninsular India.

Answer: West-flowing rivers play a crucial role in the irrigation systems of Peninsular India, particularly in regions where rainfall is inconsistent and agricultural productivity relies on reliable water sources. Rivers such as the Narmada and Tapi provide essential water for irrigation, facilitating the cultivation of various crops in both kharif and rabi seasons. The construction of dams and canals along these rivers has enhanced water management, allowing for controlled distribution of water to agricultural fields. Additionally, the availability of water from these rivers supports multiple cropping practices, improving food security in the region. However, challenges such as seasonal variations in flow and pollution can impact the effectiveness of these irrigation systems, highlighting the need for sustainable management practices.

Q2: Analyze the significance of drainage patterns in understanding the hydrology of Peninsular India.

Answer: Drainage patterns are significant in understanding the hydrology of Peninsular India as they provide insights into the geological, climatic, and ecological characteristics of the region. The configuration of west-flowing rivers, such as the Narmada and Tapi, reflects the underlying geology shaped by tectonic movements, influencing water flow and distribution. Understanding these patterns helps in assessing watershed management, flood risks, and groundwater recharge areas. Additionally, analyzing drainage patterns aids in planning infrastructure projects, agricultural practices, and environmental conservation strategies. Recognizing the relationship between drainage patterns and hydrology is essential for sustainable water resource management in Peninsular India.

Q3: Evaluate the impact of human activities on the west-flowing rivers of Peninsular India.

Answer: Human activities significantly impact the west-flowing rivers of Peninsular India, often leading to alterations in their natural flow and ecology. Urbanization and industrialization have resulted in increased pollution from waste disposal, adversely affecting water quality and aquatic ecosystems. Additionally, agricultural practices, including the excessive use of fertilizers and pesticides, contribute to runoff, leading to eutrophication and loss of biodiversity in river systems. The construction of dams and barrages for irrigation and hydroelectric power has transformed river courses, impacting sediment transport and local ecosystems. Addressing these challenges requires a comprehensive approach to environmental management, emphasizing pollution control, sustainable agricultural practices, and restoration of river habitats to ensure the health of these vital water resources.

Previous Year Questions on West-Flowing Rivers

1. UPSC CSE Prelims 2021:

Question: Which of the following is a west-flowing river in Peninsular India?

A) Godavari
B) Krishna
C) Narmada
D) Kaveri

Answer: (C)

Explanation: The Narmada is a west-flowing river in Peninsular India, while the Godavari, Krishna, and Kaveri flow eastward into the Bay of Bengal.

2. UPSC CSE Mains 2019 (GS Paper 1):

Question: "Examine the role of river systems in shaping the geography of Peninsular India." Discuss the significance of west-flowing rivers.

Answer: River systems play a pivotal role in shaping the geography of Peninsular India by influencing landforms, soil fertility, and climatic conditions. West-flowing rivers, such as the Narmada and Tapi, are particularly significant as they carve out rift valleys and contribute to the unique topography of the region. These rivers also support diverse ecosystems and provide essential water resources for agriculture and human settlements. The significance of west-flowing rivers extends to their role in transportation, trade, and cultural exchanges, as they facilitate connectivity between inland and coastal areas. Overall, the river systems in Peninsular India are integral to both the physical landscape and the socio-economic development of the region.

To get more information and study materials on Physical Geography, Human Geography, and Environmental Geography for UPSC IAS Prelims and Mains exam, candidates can check NCERT Geography Notes right here.