Located near Vagamon, the Idukki Arch Dam is an engineering marvel and one of the highest arch dams in Asia. This double curvature arch dam stands majestically between the Kuravan and Kurathi hills, creating the Idukki Reservoir. Visitors are often awestruck by the sheer scale of the dam and the panoramic views of the surrounding lush green hills and valleys. The dam is a crucial part of the Idukki Hydroelectric Project, contributing significantly to Kerala's power supply. While access to the dam itself might be restricted, the viewpoints around the reservoir offer stunning photo opportunities and a chance to appreciate the beauty of the region. Boating in the reservoir is often available, providing a unique perspective of the dam and its surroundings. The cool, fresh air and serene atmosphere make it a refreshing escape from the hustle and bustle of city life.
The concept of building a dam across the Periyar River to generate hydroelectric power dates back to the British era. However, the project gained momentum in the 1960s, and construction of the Idukki Arch Dam commenced in 1969. The dam was completed in 1973 and became a crucial component of the Idukki Hydroelectric Project. The project involved the construction of two other dams, Cheruthoni and Kulamavu, along with the Idukki Arch Dam, to create a large reservoir. The reservoir's water is used to generate electricity at the Moolamattom Power Station, located underground. The construction of the dam involved significant engineering challenges due to the region's terrain and the scale of the project. Today, the Idukki Arch Dam stands as a testament to human ingenuity and a vital source of power for Kerala.