Tamil Nadu's thousands of ancient irrigation tanks — the eris that have fed the state's fields for centuries — got a digital champion on Tuesday, 10 November 2026, when Chief Minister C. Joseph Vijay launched the 'Eri' web portal developed by the state's Water Resources Department and handed over formal authorisations to five civil-society organisations to begin lake-restoration work across the state.

What the 'Eri' portal sets out to do

The Eri website — 'eri' being the Tamil word for a tank or lake — is designed to serve as a centralised digital platform for information on Tamil Nadu's water bodies. Developed by the Water Resources Department, the portal is intended to bring together data on the condition, location, and restoration status of the state's vast network of traditional tanks, making monitoring accessible to both government officials and the public.

Tamil Nadu is home to tens of thousands of these heritage water bodies, many dating back to ancient agrarian civilisations. Decades of encroachment, siltation, and neglect have diminished their capacity, with direct consequences for farmers and drinking-water security in rural districts.

Five NGOs cleared to restore water bodies

At the Secretariat in Chennai, CM Vijay handed No Objection Certificates (NOCs) to representatives of five non-governmental organisations: Mega Foundation, ExNoRa International Foundation, Environmentalist Foundation of India (EFI), Dhanam Foundation, and Siruthuli. The NOCs formally authorise each organisation to undertake restoration work on specific water bodies in coordination with the state government.

ExNoRa International Foundation has a long track record of lake-restoration and community-cleanliness drives across Tamil Nadu. EFI is widely recognised for urban lake revival projects spanning multiple states, while Siruthuli, based in Coimbatore, has led the revival of several traditional water bodies in the city's catchment areas. The inclusion of all three in a single state-level authorisation signals an attempt to scale up what have historically been city-specific or project-specific interventions into a coordinated statewide effort.

Civil-society partnership as state water policy

Tamil Nadu has periodically brought NGOs into irrigation-tank management through community-participation models, particularly for desilting and maintenance. This event follows that lineage but adds two new elements: a dedicated digital infrastructure in the form of the Eri portal, and formal legal clearances issued at the Chief Ministerial level — signalling that the government intends to treat civil-society involvement as structured policy rather than ad hoc goodwill.

The five NGOs will now work alongside the Water Resources Department, with the Eri portal expected to track progress and serve as a public accountability tool. Farmers' groups and local communities — the primary stakeholders in functional tank systems — stand to benefit most directly if restoration targets are met.

With a digital monitor now in place and formal authorisations issued, the real test will be how quickly shovels hit silt — and whether the Eri portal becomes the living record of that work.