Consider the following tributaries of river Ganga : 1. Gandak 2. Kosi 3. Ghaghara 4. Gomti Which one of the following is the correct order of the above rivers from east to west?

The Ganga river system features several major left-bank tributaries originating in the Himalayas. From east to west, the sequence of these tributaries is Mahananda, Kosi, Gandak, Ghaghara, Gomti, and Ramganga [2]. The Kosi river, known for its frequent course changes and flooding, is the easternmost among the four listed [3]. Moving westward, the Gandak enters the plains in Bihar's Champaran district and joins the Ganga near Patna [3]. Further west is the Ghaghara, which flows through Uttar Pradesh and Bihar and is considered one of the largest tributaries [1]. The Gomti river is located further west in Uttar Pradesh, joining the Ganga before the confluence of the Ghaghara [1]. Therefore, the correct order from east to west is Kosi (2), Gandak (1), Ghaghara (3), and Gomti (4), corresponding to the sequence 2-1-3-4.

Sources

1. [1] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Drainage System > Do you Know? > p. 22
2. [2] CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 3: Drainage > The Ganga River System > p. 20
3. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 3: The Drainage System of India > River Gandak > p. 16