| Uda Walawe Dam | |
| Image Alt: | Left-bank view of the dam, with all four spillways open. |
| Coordinates: | 6.4339°N 80.8542°W |
| Country: | Sri Lanka |
| Location: | Udawalawe |
| Purpose: | Irrigation, Power |
| Status: | O |
| Dam Type: | E |
| Dam Crosses: | Walawe River |
| Dam Length: | 3.91NaN1 |
| Spillway Count: | 4 |
| Spillway Type: | Tainter gate |
| Res Name: | Udawalawe Reservoir |
| Res Capacity Total: | 267MCM |
| Res Max Length: | 8.61NaN1 |
| Res Max Width: | 7km (04miles) |
| Plant Name: | Udawalawe Power Station |
| Plant Coordinates: | 6.4319°N 80.8506°W |
| Plant Operator: | CEB |
| Plant Type: | C |
The Udawalawe Dam is a large irrigation dam in Udawalawe, in the Southern Province of Sri Lanka. The dam consists of an embankment section and a gravity section, combining the total dam length to approximately 3.91NaN1. The dam is also used for hydroelectric power generation, powering two units, commissioned in .[1]
The water level of the reservoir is controlled by the five tainter gate spillways located at the eastern end of the dam, with two additional spillways located towards the centre of the dam. The reservoir measures approximately 8.61NaN1 in length, with a maximum perpendicular width of 7km (04miles).