| Tilaiya Dam | |
|---|---|
  Location in Jharkhand | |
| Official name | Tilaiya Dam |
| Country | India |
| Location | Koderma district, Jharkhand |
| Coordinates | 24°19′26″N 85°31′16″E / 24.32389°N 85.52111°E |
| Status | Functional |
| Opening date | 21 February 1953 |
| Owner(s) | Damodar Valley Corporation |
| Dam and spillways | |
| Type of dam | Concrete gravity dam |
| Impounds | Barakar River |
| Height | 30.28 metres (99.3 ft) |
| Length | 366 metres (1,201 ft) |
| Spillway type | Concrete spillways |
| Spillway capacity | 1348 cubic meters/s |
| Reservoir | |
| Creates | Tilaiya reservoir |
| Total capacity | 380.71 million cubic meters (13.45 tmcft) |
| Active capacity | 305.93 million cubic meters (10.8 tmcft) |
| Surface area | 59.08 square kms |
| Power Station | |
| Operator(s) | Damodar Valley Corporation |
| Installed capacity | 4 MW |
Tilaiya Dam was the first of the four multi-purpose dams included in the first phase of the Damodar Valley Corporation. It was constructed across the Barakar River, at Tilaiya in Koderma district in the Indian state of Jharkhand and opened in 1953.