Major Rivers of Bihar, Know the Names and Their Significance

Bihar, often called the land of rivers, is home to many important rivers that shape its land, culture, and economy. These rivers provide water for farming, support daily life, and hold deep religious value. Flowing mainly from the Himalayas into the Ganga, Bihar’s rivers like the Kosi, Gandak, Son, and Punpun are vital to the state’s growth and heritage.

The Ganga River, Lifetime of Bihar

The Ganga River is the most important and sacred river in Bihar. It enters the state at Chausa, forming the boundary between Bhojpur and Saran districts. Flowing west to east, it passes through major cities like Patna, Bhagalpur, and Munger.

• Major Tributaries: Son, Gandak, Kosi, Bagmati, Punpun, and Karmanasa
• Famous Structure: The Mahatma Gandhi Setu, one of India’s longest bridges, connects North and South Bihar across the Ganga.
• Importance: The river supports agriculture, transport, and religious life. It is the heart of festivals like Chhath Puja, when devotees offer prayers to the Sun God on its banks.

Ghaghra (Saryu) River

The Ghaghra River, also called Saryu, originates in Nepal’s Nampa region and enters Bihar near Gopalganj, joining the Ganga at Chhapra.

• It is a sacred river for both Hindus and Buddhists.
• It enriches farmlands and helps maintain soil fertility in the northern plains of Bihar.

Gandak River

The Gandak River, known as Narayani in Nepal, originates north of Dhaulagiri Mountain in the Himalayas and enters India near Triveni town in Nepal.

• Flows through: West Champaran, East Champaran, Muzaffarpur, Siwan, Saran, Gopalganj, and Vaishali
• Importance: It forms a natural boundary between Bihar and Uttar Pradesh and supports the Triveni Canal System used for irrigation.
• The Gandak Barrage at Valmikinagar is a key structure for water management and flood control.

Burhi Gandak River

The Burhi Gandak River originates from the Someshwar Hills in West Champaran. It flows almost parallel to the Gandak River before joining the Ganga at Khagaria.

• Flows through: West Champaran, East Champaran, Muzaffarpur, Samastipur, and Begusarai
• It is an important river for irrigation and agriculture in northern Bihar.

Bagmati River

The Bagmati River originates from the Shivpuri Hills in Nepal and enters Bihar through Sitamarhi district.

• Flows through: Muzaffarpur, Darbhanga, and Samastipur
• Tributaries: Lalbakeya and Lakhandei
• It is a perennial river, meaning it flows throughout the year.
• It meets the Kosi River at Badlaghat. The Bagmati is also considered sacred by both Hindus and Buddhists.

Kamla River

The Kamla River originates from the Mahabharat Hills in Nepal and enters Bihar at Jainagar in Madhubani district.

• The Kamla Barrage near Jainagar helps in irrigation and flood control.
• Tributaries: Dhauri, Soni, Balan, and Trisula
• It flows through the fertile Mithila region and merges with the Kosi River.

Mahnanda River

The Mahananda River rises in Sikkim and enters Bihar through Purnia district.

• Tributaries: Balason, Ratwa, and Kankai
• It forms a natural boundary between Bengali and Hindi-speaking regions in its upper course.
• The river joins the Ganga in Bangladesh after flowing through Katihar district.
  It is important for agriculture and trade in eastern Bihar.

Son River

The Son River originates from the Amarkantak Hills in Madhya Pradesh and joins the Ganga at Maner, near Patna.

• Tributaries: Rihand and North Koel
• It flows through Aurangabad, Rohtas, and Patna districts.
• Major Structures: The Dehri Anicut and Indrapuri Barrage are built on the Son to control floods and provide irrigation.

It is known for its wide channel and stony riverbed.

Kosi River

The Kosi River, called the “Sorrow of Bihar”, is known for frequent floods caused by changes in its course.

• Origin: Himalayas in Nepal
• Joins Ganga: Near Kursela in Katihar district
• It has seven upper tributaries, so it is also called Saptakoshi.
• Despite its floods, it brings fertile soil that benefits farmers.
• The Kosi Barrage helps manage water flow and prevent damage during the monsoon.

Punpun River

The Punpun River begins in the Hazaribagh Plateau of Jharkhand and flows through Aurangabad, Gaya, and Patna, joining the Ganga at Fatuha.

• Tributaries: Dordha, Butane, Madar, and Morhar
• The river is mentioned in ancient texts like the Vayu Purana and Padma Purana.
  It holds spiritual importance, especially in Gaya, where it is linked to religious rituals.

Phalgu River

The Phalgu River, also known as Niranjana, is a sacred river in Gaya.

• Origin: Formed by the merging of Lilajan and Mohana Rivers near Gaya.
• Tributary: Mohane River
• Religious Importance: Hindus believe that performing Pind Daan (ancestral offerings) on its banks helps souls attain peace.

It is also revered in Buddhist traditions.

Karmanasa River

The Karmanasa River originates from the Rohtas Plateau and joins the Ganga near Chausa, forming part of the Bihar–Uttar Pradesh border.

• Tributaries: Durgavati, Chandraprabha, and Khajuri

It is known for its scenic beauty and historical importance in ancient texts.

Significance of Rivers in Bihar

The rivers of Bihar are the lifelines of its people. They play a vital role in:

• Agriculture: Providing irrigation to vast farmlands
• Power: Supporting hydroelectric projects like Kosi and Gandak barrages
• Culture: Serving as sacred sites for festivals like Chhath Puja and Pind Daan
• Economy: Supporting fishing, transport, and trade

Despite frequent floods, these rivers keep the soil fertile and support millions of livelihoods across the state.