The dam is named 'Mukkombu' because the river splits into three branches here, literally translating to 'three branches' or 'three horns' in Tamil.
It was constructed by Sir Arthur Cotton, a British irrigation engineer, in the 19th century to ensure the stability of the older Grand Anaicut.
The structure acts as a primary control point for the flow of the Cauvery, protecting the downstream delta regions from excess floods.
The park area contains a variety of botanical specimens and artificial landscapes designed to attract local families.
During the monsoon season, the floodgates are often opened, creating a powerful cascading water effect that is a major draw for visitors.
Mukkombu, also known as Upper Anaicut, is a major dam located at the confluence of the Cauvery and Kollidam rivers near Tiruchirappalli. The site was built across the Cauvery River in the 19th century to divert water for irrigation. The dam serves as the starting point where the river branches into two distinct streams. The structure features a large weir and an extensive network of sluice gates regulating water flow into the Kollidam. A sprawling park and children’s play area are maintained on the riverbank adjacent to the dam. The spot is historically significant for its engineering design modelled after the ancient Grand Anaicut. It serves as a vital irrigation hub for the fertile plains of the Trichy and Thanjavur districts.
The central bridge walkway offering panoramic views of the water splitting into two separate channels.
Visit during the water release season to see the dam at its highest flow capacity.
Wear comfortable footwear as the park involves walking on uneven riverbank terrain.
Keep a safe distance from the water's edge, as current strengths near the sluice gates can be deceptive.
Do not attempt to enter the water or climb over the safety railings on the dam structure.
Maintain noise levels respectful of the local families and nature areas; dispose of waste in designated bins to protect the river ecology.
