Thiruvananthapuram's primary source of drinking water is set for a significant capacity boost. An extensive desilting project underway at the Aruvikkara dam is expected to substantially enhance the reservoir's water-holding ability, promising greater security for the city's water supply, especially during dry spells.
Project Details and Phased Execution
The Kerala Irrigation Infrastructure Development Corporation (KIIDC) is implementing this critical initiative. It was launched in response to years of accumulated silt, sand, clay, and sludge, which had markedly reduced the dam's effective storage capacity. The project involves the removal of a massive 10,24,586 cubic metres of sediment from the reservoir.
To date, workers have already desilted 9,755.95 cubic metres. While the project was initially slated for completion within one year, authorities adopted a phased approach. This strategy was crucial to ensure the drinking water supply to the capital city remained uninterrupted throughout the construction period. Official data now indicates that the desilting process is targeted for completion by the end of 2026.
Expected Benefits for Water Security and Revenue
Upon completion, the project is projected to create an additional water storage capacity of approximately 1 million cubic metres in the Aruvikkara dam. This enhanced capacity is a game-changer for Thiruvananthapuram's water infrastructure. It will significantly strengthen the city's drinking water supply system, providing a much-needed buffer during the summer months and periods of low rainfall.
Beyond water security, the initiative also carries economic benefits. Government estimates suggest the regulated removal and sale of silt and related materials will generate a revenue of around Rs 13.88 crore. This aspect helps offset project costs and adds a sustainable element to the reservoir's maintenance.
A Broader Push for Improved Infrastructure
The Aruvikkara desilting project is a key component of broader efforts by the KIIDC and the state government to upgrade and future-proof water infrastructure in Thiruvananthapuram. By tackling the issue of silt accumulation head-on, the project directly addresses a chronic problem that has plagued the reservoir's efficiency. The successful execution of this project will ensure the dam continues to serve as a reliable lifeline for the capital city's residents for years to come.
