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| Adavinainar Dam | |
|---|---|
  Location of the Adavinainar Dam in Tamil Nadu  Adavinainar Dam (India) | |
| Country | India |
| Location | Mekkarai vadakarai Village, Tenkasi district, Tamil Nadu |
| Coordinates | 9°04′00″N 77°14′16″E / 9.06667°N 77.23778°E |
| Purpose | 1992 flood in west gates before built the damIrrigation |
| Status | Completed |
| Construction began | 1996 |
| Opening date | 2002 |
| Owner(s) | Government of Tamil Nadu |
| Dam and spillways | |
| Height | 51.5 m (169 ft) |
| Length | 670 m (2,198 ft) |
The Adavinainar Dam is located at the foothills of Western Ghats and border of Kerala, built across the Hanumanadhi River near Mekkarai, Vadakarai in the Tenkasi district of Tamil Nadu, Southern India. It provides water for irrigation to the region of Sengottai Taluk.