Idukki dam in Kerala supports a 780 MW hydroelectricity generation plant and is owned by the Kerala State Electricity Board. The Idukki Dam is India’s first and largest double-curvature arch dam, a rare and sophisticated design that uses the natural strength of the surrounding mountains to hold back water. The dam is constructed between Kuravan Mala and Kurathi Mala, two granite hills that, according to local legend, represent a tribal couple turned to stone.
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However Idukki Dam isn’t just a supportive structure. It is also a beautiful tourist attraction. People visiting the Idukki district often stop near this dam to admire its strategic positioning in the mountains.
How the Idukki Dam became so famous, what’s the history, and when to visit? Idukki dam is the highest arch dam in Asia and learn why it has become the talk of the town.
Idukki Dam: An Overview
The area offers stunning panoramic views of the Western Ghats, and the Idukki Arch Dam Viewpoint is a popular tourist attraction. There is only one arch dam that’s 550 ft. tall and 650 ft. wide in India. What makes the Idukki Dam an attraction is the way it is curved both horizontally and vertically. The dam is a part of the Hydroelectricity Project and helps keep the power running in the town.
Earlier, no one could visit the site due to security reasons. Later, the authorities opened it up for the public during Onam and Christmas for 10 days. It was only in 2024 that the duration for visitors increased to 30 days.
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This year, the government has opened up the Idukki Dam for public visits and boating excursions till May 2026
History of the Idukki Dam
Here’s how the inception turned into execution for the Idukki Dam:
- The idea for the Idukki Dam was conceived in 1919. That’s when the Oorali tribal chief, Shri Kolumban, showed this path to his friends, the Malankara Estate Superintendent and Thomas Edattu. He shared about the mountain legend and the possibility of building a dam there. Thomas was quite impressed by the legend and the way the Periyar River was flowing between the mountains.
- W.J. John submitted a report to the Government of Travancore in 1932, sharing his idea of constructing the dam for hydroelectric power generation.
- Fast forward three years, Shri.K.A.Narayana Pillai again discussed the project with the government, but nothing happened. In fact, a study was conducted in 1937 by two Italian engineers, but it was futile.
- In 1947, the Chief Electrical Engineer, Sri P. Joseph John, submitted a preliminary investigation report.
- The Central Water Commission performed an extensive investigation in 1956 at the government’s request.
- The project report was completed by 1961, and the scheme was implemented in 1963.
- Finally, in 1964, the Idukki Dam project kick-started under Sri. E.U.Philipose’s leadership.
- It was not before 1973 that the storage of water began in the dam.
- The dam was inaugurated on 4 October 1975 by the then Prime Minister Indira Gandhi
- The power station’s commercial operation was commissioned in 1976.
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Location of the Idukki Dam
The dam derives its name from the Idukki district, comfortably positioned between the Kuravanmala and Kurathimala mountains. According to folklore, Kuravan and Kurathi were a tribal couple, cursed by Lord Rama. Both turned into stone and begged for mercy, saying that they couldn’t live without each other. Rama Ji listened to their wish and promised that they would always be together. Slowly, the two rocks faced each other with the River Periyar flowing through them. That’s where the Idukki Dam was built, bringing the hillocks even closer. Today, everyone embraces this dam as it is a symbol of the fulfilment of Lord Rama’s promise.
Idukki Dam Ticket Price and Other Information
Idukki visiting time has been fixed from 9.30 A.M. to 4.30 P.M on all days other than Wednesdays Tourist entry to the dams is allowed on all days except Wednesdays.
Ticket Price:
- INR 150 for adults
- INR 100 for children
- INR 600 for a boat ride (per person)
Tourist entry ispermitted only through buggy cars, and the number of tourists was limited to 820 persons a day. The ticket charge has been fixed at ₹150 for adults and ₹100 for children. Mobile phones, cameras, and electronic gadgets are banned on the dam premises.
Route to Idukki Dam
You could reach the dam via the Cheruthoni—Vellappara route. When returning, visitors need to take the same road.
If you want to visit the Idukki Dam during your next trip, here’s what you need to know:
Address: Kuravan and Kurathi Hills, Close to the Cheruthoni Barrage, Idukki, Kerala, 685602, India
Opening Hours: 10 am to 5 pm
Places to Explore Near the Idukki Dam
Although the Idukki Dam is a water reservoir, people often come here to capture its beauty and enjoy a 15-minute boat ride. Additionally, there are other places to enjoy near the dam:
1. Cheruthoni Dam
The Cheruthoni is the highest gravity dam in Kerala, and is one of the most beautiful places to discover. It was built by changing the Cheruthoni River’s direction to prevent the Periyar River water from overflowing. This dam is made of concrete and stone masonry and is so strong that its weight alone prevents the water from affecting the structure.
Distance from Idukki Dam: 1.8 km
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2. Hill View Park
Enjoy a day of excitement and enjoyment with your family at Hill View Park. This tourist site is enveloped with flora and fauna and is a sight for sore eyes. The park has a natural lake where you can enjoy a boat ride. It might give you a chance to spot animals roaming in the wild.
Distance from Idukki Dam: 3.1 km
3. Ramakkalmedu Peak
The tourist spot is located on the border of Kerala and Tamil Nadu. Its significance dates back to the era of Ramayana, and is often known as the Lord Rama set his foot. Explore the peak and you’ll find a lake blushing with lotus flowers, which is more than enough to enrich your travel experience.
Distance from Idukki Dam: 38.6 km
4. Idukki Wildlife Sanctuary
Another side of Idukki’s glory is the wildlife sanctuary, where you will find the most magical mountain views. This place is home to several animals and a pristine lake on three sides. So the next time to visit here, don’t forget to observe the evergreen and deciduous forests as they shimmer under the sunlight.
Distance from Idukki Dam: 52.1 km
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5. Thommankuthu Falls
A beautiful site indeed, Thommankuthu is a collection of 12 waterfalls spreading over 5 km. They fall from 40 m and replicate a dreamy scene. The place is a hidden gem in Idukki and is often known for its scenic routes, breathtaking atmosphere, and dense forests.
Distance from Idukki Dam: 48.8 km
How to Reach Idukki Dam?
Idukki, Kerala’s most beautiful hill station, is at over 5,000 ft above sea level. It has extensive road connectivity to other cities:
- By Road: Cabs and buses regularly travel between major cities and Idukki. You can prebook your conveyance to avoid hassle and price hikes.
- By Railway: The nearest railway junction is Kottayam, 102.6 km. It takes approximately 3 hours to reach by road from there.
- By Flight: Cochin International Airport is the closest to the Idduki Dam, 100 km. You can book a cab and reach your destination in around 3 hours.
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