Kaptai dam is the one and only dam of Bangladesh that is used to generate hydro-electric power. This dam was constructed across Karnaphuli River at Kaptai in Rangamati district, 65 km upstream of Chittagong. It is an earthfill embankment dam which reservoir is called Kaptai Lake. The water storage capacity of the Kaptai dam is 11000 km2. The construction of the dam was started in 1957 and was completed in 1962.
Under the guidance of then Chief Engineer (Irrigation) Khwaja Azimuddin, the construction site was chosen at present location of the dam in 1951. The International Engineering Co. Inc. (IECO) was engaged for a study on the project. Utah International Inc. was selected as construction contractor.
|The 16 gated (each 12.2 m X 11.3 m size) spillway of Kaptai Dam have discharge capacity of 625000 cusec. |
|Kaptai Dam with spillway and Power Plant|
Kaptai dam can reduce the downstream flood peak in the Karnafuli river by 50% by storing water in the reservoir. Kaptai dam is 670.56m long and 45.7m high. The width at the foundation level is 45.7m and at crest level 7.6m. The crest level is 36m above mean sea level (MSL).