Important Dams and Barrages in Bihar – Major Water Projects and Their Importance
Learn about the important dams and barrages in Bihar, including Gandak, Kosi, Indrapuri, Chandan and Durgawati, their rivers, locations and importance.
Important Dams and Barrages in Bihar
Bihar is a state where rivers play an important role in agriculture, irrigation, flood management and the daily lives of millions of people. The Ganga and its tributaries, including the Gandak, Kosi, Sone, Punpun and several smaller rivers, form an extensive water network across the state. To manage this water resource, Bihar has developed several dams, barrages and reservoirs.
These water structures have different purposes. Some regulate river water and divert it into irrigation canals, while others store water for agriculture and help manage seasonal water availability. Barrages such as the Gandak Barrage, Kosi Barrage and Indrapuri Barrage are particularly important for irrigation and river-water management. Bihar also has several reservoirs and dams, including Chandan Dam, Badua Dam and Durgawati Reservoir, which support irrigation in different regions.
According to government records, Bihar has a number of important reservoirs and dams distributed across districts such as Banka, Rohtas, Jamui, Munger, Nawada and others.
Table of Contents
List of Dams and Barrages
1. Gandak Barrage
The Gandak Barrage, also known as the Valmikinagar Barrage, is one of the most important barrages associated with Bihar. It is located at Valmikinagar in West Champaran on the Gandak River, also known as the Narayani.
The barrage is part of the Gandak irrigation system and plays an important role in diverting river water into canals for agricultural purposes. The structure is also significant because the Gandak is an international river system connected with Nepal before entering the plains of Bihar.
The National Register of Specified Dams identifies the Gandak Barrage in West Champaran as a multipurpose structure.
2. Kosi Barrage
The Kosi Barrage is another major water-control structure important for Bihar. It is situated near Bhimnagar in the Supaul region close to the India-Nepal border and is constructed across the Kosi River.
The Kosi is often associated with severe floods because of its changing course and enormous sediment load. The barrage and associated embankment and canal systems have therefore played an important role in controlling and utilizing Kosi water.
Besides flood-management functions, the Kosi system supports irrigation and agriculture in north-eastern Bihar. The river’s importance makes the Kosi Barrage an important topic in Bihar GK, particularly for questions related to rivers, irrigation and flood control.
3. Indrapuri Barrage
The Indrapuri Barrage is one of the major irrigation structures of southwestern Bihar. It is constructed across the Sone River in Rohtas district.
The Sone is an important southern tributary of the Ganga, and its water is extensively utilized for irrigation. The Indrapuri system distributes water through a large canal network, helping agricultural areas of south-western Bihar.
The Sone irrigation system is especially important because agriculture in this part of Bihar depends heavily on the availability and controlled distribution of surface water. Government planning documents identify Indrapuri Barrage among the important structures associated with the Sone river system.
4. Durgawati Dam and Reservoir
The Durgawati Dam, also called the Durgawati Reservoir Project, is located in Rohtas district. It is constructed on the Durgawati River and is primarily associated with irrigation.
The reservoir stores monsoon water and helps provide a more dependable water supply for agricultural areas. The project is also notable in Bihar’s irrigation-development plans.
The Central Water Commission’s records list Durgawati among Bihar’s specified dams, while the Bihar government’s irrigation information identifies the Durgawati Reservoir Project as an important irrigation project.
5. Chandan Dam
Chandan Dam is situated in Banka district and is one of the important irrigation reservoirs of southeastern Bihar. It was constructed on the Chandan River and supports agricultural activities in the surrounding region.
Government records list Chandan Dam among Bihar’s specified dams and identify irrigation as its principal purpose. The reservoir is also one of the larger water bodies recorded in Bihar’s reservoir information.
For Bihar GK, Chandan Dam is particularly useful to remember because questions can connect it with Banka district, the Chandan River and irrigation.
6. Badua Dam
Badua Dam is another important irrigation dam in Bihar. It is associated with the Badua river system and serves agricultural areas in the southern part of the state.
The dam is included in Central Water Commission records and is also part of Bihar’s irrigation and command-area development framework. The Badua system demonstrates how smaller reservoirs and irrigation structures complement the state’s larger river projects.
7. Kharagpur Lake and Reservoir
Kharagpur Lake in Munger district is an important reservoir and water resource in southern Bihar. It is associated with the Kharagpur region and has significance for water storage and local irrigation.
It is included among the state’s recognized dams and reservoirs in government water-resource documentation. Bihar’s reservoir network is not limited to the major barrages on large rivers; smaller and medium reservoirs also contribute significantly to agricultural water availability
8. Phulwaria Dam
Phulwaria Dam is another reservoir included in Bihar’s network of irrigation-related water structures. It is among the dams identified in government documentation on Bihar’s water resources.
Such reservoirs are important because they capture seasonal rainfall and make water available for agricultural use beyond the immediate monsoon period. Together with other small and medium dams, they contribute to the broader irrigation infrastructure of the state.
Importance of Dams and Barrages in Bihar
The dams and barrages of Bihar have several important functions:
Irrigation
Agriculture is one of the major economic activities in Bihar. Barrages and reservoirs help supply water to agricultural fields through canal systems, reducing dependence on rainfall.
Flood Management
Flooding is a recurring challenge, especially in north Bihar. Structures associated with rivers such as the Kosi and Gandak form part of larger systems designed to regulate water and reduce the impact of floods.
Water Storage
Reservoirs store water during the rainy season and can make it available during periods when rainfall is limited. This is particularly valuable for agricultural planning.
Regional Development
Irrigation infrastructure can support agricultural productivity and contribute to the development of rural areas. Reliable water supplies can also benefit fisheries and other water-dependent activities.
Command Area Development
Bihar has several command-area development schemes connected with irrigation systems such as Sone, Gandak, Kosi, Kiul, Badua, Chandan, North Koel and Durgawati. These programs aim to improve the effective use of irrigation water in agricultural areas.
Dams and Barrages in Bihar: Quick Revision Table
| Dam/Barrage | River | Major Location | Main Importance |
|---|---|---|---|
| Gandak Barrage | Gandak | West Champaran | Irrigation and multipurpose water management |
| Kosi Barrage | Kosi | Supaul region | Irrigation and flood-related water management |
| Indrapuri Barrage | Sone | Rohtas | Irrigation |
| Durgawati Dam | Durgawati | Rohtas | Irrigation and water storage |
| Chandan Dam | Chandan | Banka | Irrigation |
| Badua Dam | Badua | Southern Bihar | Irrigation |
| Kharagpur Reservoir | Local river system | Munger | Water storage and irrigation |
| Phulwaria Dam | Local river system | Bihar | Water storage and irrigation |
Summary
The important dams and barrages in Bihar form an essential part of the state’s water-resource and agricultural infrastructure. Major structures such as the Gandak Barrage, Kosi Barrage and Indrapuri Barrage regulate and distribute river water across extensive irrigation systems, while reservoirs such as Chandan, Badua and Durgawati provide important local and regional water-storage facilities.
Also Check: Bihar GK
