| Bang Lang Dam | |
| Location Map: | Thailand |
| Location Map Caption: | Dam location in Thailand |
| Coordinates: | 6.1564°N 101.2736°W |
| Country: | Thailand |
| Location: | Bannang Sata, Yala |
| Purpose: | Multi-purpose |
| Status: | O |
| Cost: | US$133.13 million |
| Dam Type: | F |
| Dam Crosses: | Pattani River |
| Dam Height Foundation: | 85m (279feet) |
| Dam Length: | 430m (1,410feet) |
| Dam Elevation Crest: | 120m (390feet) |
| Dam Width Crest: | 10m (30feet) |
| Res Name: | Bang Lang Reservoir |
| Res Capacity Total: | 1420000000m2 |
| Res Catchment: | 2080km2 |
| Plant Turbines: | 3 x 24 MW Francis-type |
| Plant Capacity: | 72 MW |
| Plant Annual Gen: | 200 GWh |
The Bang Lang Dam (th|เขื่อนบางลาง,, pronounced as /th/), also known as the Pattani Dam (Thai: เขื่อนปัตตานี,, pronounced as /th/), is a multi-purpose hydroelectric dam in the Bannang Sata District of Yala Province, Thailand.[1] It was the first multi-purpose dam developed in Thailand's southern region. The dam impounds the Pattani River, creating the Bang Lang Reservoir. The dam and its accompanying power plant were developed as part of the Pattani Project.[2]
Bang Lang Dam is an earth core rockfill dam. It is 430m (1,410feet) long and 85m (279feet) high. Its reservoir has a maximum storage capacity of 1420000000m2 with a catchment area of 2080km2.[1]
The dam is considered multi-purpose supporting electricity generation, irrigation, flood control, fisheries and recreation activities.[2]
The dam's power plant has three hydroelectric Francis turbine-generating units, each with an installed capacity of 24 MW.[3] A nearby mini hydroelectric project at Ban Santi has a 1.275 MW generating unit and is also part of the Pattani Project. The combined annual power generation is 200 GWh.[2]