The reservoir is created by an earth-filled dam, requiring the use of massive boulders and clay to prevent water leakage.
The surrounding landscape contains numerous small islands that were formerly hilltops before the reservoir was filled.
The dam is named after Banasura, a figure from Indian mythology who is said to have performed penance in these hills.
The region experiences high rainfall, contributing to the year-round water level of the reservoir.
The project provides essential irrigation to the Wayanad district, influencing local agricultural patterns.
Banasura Sagar Park is situated at the base of the Banasura Sagar Dam, which is the largest earthen dam in India and the second largest in Asia. The park sits within the Western Ghats, featuring manicured lawns and pathways overlooking the massive reservoir. It serves as an accessible vantage point for observing the Banasura hills and the Karalad Lake area nearby. The dam itself was constructed to support the Kakkayam Hydroelectric Power Project. Visitors can observe the distinct topography created by the surrounding island clusters formed during the reservoir's flooding. The site offers structured recreational areas for families while maintaining the functional infrastructure of the adjacent irrigation project.
The elevated path near the main dam wall provides a wide-angle view of the reservoir and the mountain backdrop.
Carry sun protection as the park has limited natural shade in the central viewing areas.
Bring binoculars to spot endemic bird species often seen near the water's edge.
Visit during the early morning to avoid the strongest heat and mid-day crowds.
Do not attempt to swim in the reservoir or climb the restricted areas of the embankment wall.
May be closed during extreme monsoon weather if authorities deem the access path unsafe.
Maintain silence near the dam security zone; littering is strictly prohibited in the eco-sensitive area.
