Major Dams in India: List, Rivers, States, Height & Uses

Major Dams in India: List, Rivers, States, Height and Importance

India has a large network of dams that support irrigation, drinking-water supply, hydroelectric power generation, flood management, and industrial development.

Dams are important civil engineering structures because they require careful planning, geological investigation, hydraulic analysis, structural design, construction management, and long-term maintenance.

This article provides an overview of some of the major dams in India, including their rivers, locations, approximate heights, and primary purposes.

What Is a Dam?

A dam is a structure constructed across a river or watercourse to obstruct, control, store, or regulate water.

Depending on its design and purpose, a dam can be used for:

• Irrigation

• Hydroelectric power generation

• Drinking-water supply

• Flood control

• Industrial water supply

• Water storage

• Regulation of river flows

Dams can be constructed using different materials and structural systems, including concrete, masonry, earth, and rockfill.

Major Dams in India

The following are some of the important dams in India.

Dam	River	State	Approx. height	Main purpose
Tehri Dam	Bhagirathi	Uttarakhand	260.5 m	Hydropower, irrigation, water supply
Bhakra Dam	Sutlej	Himachal Pradesh	226 m	Irrigation, hydropower, water supply
Hirakud Dam	Mahanadi	Odisha	60.96 m	Flood control, irrigation, hydropower
Sardar Sarovar Dam	Narmada	Gujarat	138.68 m	Irrigation, water supply, hydropower
Nagarjuna Sagar Dam	Krishna	Telangana/Andhra Pradesh	124.7 m	Irrigation, hydropower
Idukki Dam	Periyar	Kerala	168.91 m	Hydropower
Koyna Dam	Koyna	Maharashtra	103.2 m	Hydropower
Tungabhadra Dam	Tungabhadra	Karnataka	49.5 m	Irrigation, hydropower, water supply
Mettur Dam	Cauvery	Tamil Nadu	65.23 m	Irrigation, water supply
Rihand Dam	Rihand	Uttar Pradesh	91.46 m	Water storage, power generation
Gandhi Sagar Dam	Chambal	Madhya Pradesh	62.17 m	Irrigation, hydropower
Ukai Dam	Tapi	Gujarat	80.77 m	Irrigation, hydropower, flood control
Koldam Dam	Sutlej	Himachal Pradesh	167 m	Hydropower
Mullaperiyar Dam	Periyar	Kerala	53.66 m	Irrigation, water supply

Heights and project characteristics can vary depending on the reference and the definition used. Always verify project-specific technical data from the responsible authority before using it for engineering work.

1. Tehri Dam

Location: Uttarakhand
River: Bhagirathi
Type: Earth and rockfill dam
Height: Approximately 260.5 m

Tehri Dam is one of the most significant large dams in India and is located on the Bhagirathi River.

The project provides benefits including:

• Hydroelectric power generation

• Irrigation

• Water supply

Its large height makes it particularly significant from a dam-engineering perspective.

2. Bhakra Dam

Location: Himachal Pradesh
River: Sutlej
Height: Approximately 226 m

Bhakra Dam is one of India's best-known multipurpose river valley projects.

The Bhakra system provides important benefits for:

• Irrigation

• Hydroelectric power

• Water management

The dam and associated infrastructure played a major role in the development of irrigation in northwestern India.

3. Hirakud Dam

Location: Odisha
River: Mahanadi
Height: Approximately 60.96 m

Hirakud Dam is constructed across the Mahanadi River in Odisha.

One of its major functions is flood control.

The project also supports:

• Irrigation

• Hydroelectric power generation

• Water management

The Hirakud reservoir is also notable for its large extent.

4. Sardar Sarovar Dam

Location: Gujarat
River: Narmada
Height: Approximately 138.68 m

Sardar Sarovar Dam is a major project on the Narmada River.

Its purposes include:

• Irrigation

• Drinking-water supply

• Hydropower

• Regional water management

The project is part of the larger Narmada Valley development system.

5. Nagarjuna Sagar Dam

Location: Telangana/Andhra Pradesh region
River: Krishna
Height: Approximately 124.7 m

Nagarjuna Sagar is one of India's major irrigation and hydropower projects.

The dam stores water from the Krishna River and supports irrigation and power generation.

Its large masonry/concrete structure is also an important example for civil engineering students studying dam construction.

6. Idukki Dam

Location: Kerala
River: Periyar
Height: Approximately 168.91 m

Idukki Dam is one of the major hydroelectric projects in Kerala.

The dam is particularly well known for its arch-dam design and its mountainous setting.

The project demonstrates the importance of:

• Structural stability

• Geological conditions

• Reservoir planning

• Hydropower engineering

7. Koyna Dam

Location: Maharashtra
River: Koyna
Height: Approximately 103.2 m

Koyna Dam is an important hydroelectric project in Maharashtra.

The Koyna hydroelectric project has played a major role in power generation in the state.

8. Tungabhadra Dam

Location: Karnataka
River: Tungabhadra
Height: Approximately 49.5 m

Tungabhadra Dam is a multipurpose project supporting:

• Irrigation

• Hydropower

• Water supply

It is an important part of water-resource management in the region.

9. Mettur Dam

Location: Tamil Nadu
River: Cauvery
Height: Approximately 65.23 m

Mettur Dam is constructed across the Cauvery River and is one of the important water-storage structures in Tamil Nadu.

The reservoir supports irrigation and water supply and has a major role in the agricultural economy of the region.

10. Rihand Dam

Location: Uttar Pradesh
River: Rihand
Height: Approximately 91.46 m

Rihand Dam is an important water-storage project in northern India.

The reservoir is also associated with industrial and power-generation development in the surrounding region.

Types of Dams

Civil engineers classify dams in several ways.

Gravity Dam

A gravity dam relies primarily on its own weight to resist the forces acting on it.

Arch Dam

An arch dam transfers much of the water pressure toward the surrounding valley walls.

Earth Dam

An earth dam is primarily constructed using compacted earth materials.

Rockfill Dam

A rockfill dam uses rock material as a major structural component, generally with an impermeable element to control seepage.

Composite Dam

Some projects use combinations of different dam types depending on site conditions and project requirements.

Important Factors in Dam Construction

Constructing a large dam requires detailed investigation and design.

Geological Investigation

Engineers study:

• Rock conditions

• Faults

• Geological formations

• Seepage conditions

• Foundation strength

Hydrological Studies

Engineers need information about:

• River discharge

• Flood levels

• Catchment area

• Rainfall

• Reservoir inflows

• Design floods

Structural Design

The dam must be designed to resist relevant loads, including:

• Water pressure

• Self-weight

• Uplift pressure

• Seismic forces

• Temperature effects

• Sediment-related effects

The actual design loads depend on the dam type, site, applicable standards, and project requirements.

Spillway Design

A spillway provides a controlled route for releasing excess water from a reservoir.

Its design is critical for dam safety because uncontrolled overflow can damage the dam.

Seepage Control

Water movement through or beneath a dam must be controlled and monitored.

Engineers may use measures such as:

• Cutoffs

• Grouting

• Drainage systems

• Impervious cores

• Filters

The appropriate system depends on the dam type and site conditions.

Why Are Dams Important to Civil Engineers?

Dams bring together several areas of civil engineering:

Structural Engineering + Geotechnical Engineering + Hydrology + Hydraulic Engineering + Construction Management

A major dam project therefore provides an excellent example of multidisciplinary engineering.

Conclusion

India's major dams have played an important role in irrigation, hydropower generation, water supply, flood management, and regional development.

Projects such as Tehri, Bhakra, Hirakud, Sardar Sarovar, Nagarjuna Sagar, and Idukki demonstrate the scale and complexity that civil engineers can encounter in water-resource infrastructure.

For civil engineering students, studying these projects is useful not only for examinations and interviews but also for understanding how engineering principles are applied to large real-world infrastructure.