Rajjaprabha Dam


Rajjaprabha Dam, formerly known as Chiew Lan, was constructed across Klong Saeng River at Ban Chieow Lan in Khao Phang sub-district, Ban Ta Khun district, Surat Thani.

Dam Features

Crest Length
Reservoir’s area
Reservoir’s storage capacity

Rockfill dam with clay core
95 meters
761 meters
185 square kilometers
5,639 million cubic meters

Power Plant
The power plant is situated on the right hand side of the river. It is a reinforced concrete building that houses three 80 MW generators, totaling 240 MW of generating capacity. The power plant can generate 554 million units of electric power per annum.

Operation Year: 1987
Date of Inauguration: September 30, 1987