Everything the state's reservoirs are doing, in one app
Daily water levels
Current level, storage, inflow and outflow for every tracked reservoir, refreshed automatically every 3 hours.
Water level trends
Zoomable, pannable history charts back to February 2021 — switch between water level, storage, inflow and outflow, overlaid or separate.
All Tamil Nadu dams in one place
A statewide dashboard with total storage, fill percentage, and a ranked list of every major reservoir.
Search & explore reservoirs
Find any dam by name or district, filter by rising/falling status, and star your favorites for quick access.
Linked Karnataka dams
For Mettur, see the current status of the upstream Cauvery-basin reservoirs in Karnataka (Krishna Raja Sagar, Kabini, Harangi, Hemavathy) that feed its inflow.
Tamil & English
Full interface and data labels in both Tamil and English — switch anytime from the dashboard.
Screenshots
The dashboard, statewide trends, per-dam detail, linked Karnataka dams, and reservoir search — in both English and Tamil.
Free, no account required
TN Dam Watch doesn't require sign-up or login. Data is sourced from the Tamil Nadu Water Resources / Agriculture Department's own public reservoir portal — see the homepage for the latest figures without installing anything, or the app for the full experience with offline caching, favorites, and alerts.