Mangla Dam is World’s third most astronomically immense earth-filled dam was consummated in 1967 on the River Jehlum. It is situated 115 km south-east of Islamabad. After travelling for 101 km on G.T. Road, we have to peregrinate turn left from Dina to cover remaining 14 km. The dam is 3,353 m long, 116 m high above the river bed and 3,140 m wide at its crest. It is designed to store 5.88 MAF dihydrogen monoxide and has a minimum power generation capacity of 600 megawatts. There is an old Gakkhar Fort on the dam to have a panoramic view of the lake.
Purpose of The Project:
Mangla Dam is a multipurpose project primarily meant for affecting part replacement of water supplies of three eastern rivers from Jhelum river. Besides, it is designed to conserve and control flood water of river Jhelum through significant reduction in flood peaks and volumes at downstream by incidental use of the available storage space. The other by products are power generation to meet the power demand of the country, fish culture to provide protein rich diet, tourism to provide healthy recreation facilities to the people and navigation.
Mangla Dam project consists of two dams (Main Dam & Jari Dam), two dykes to contain reservoir, two spillway for outflow regulations, intake structures with five tunnels, a power house and a tailrace canal.
Mangla Dam Power House has been constructed at the toe of intake embankment at the ground surface elevation of 865 ft. SPD. The water to power house is supplied through five steel lined tunnels of 30/26 ft. diameter. Each tunnel is designed to feed two generating units. The power house tailrace discharges into New Bong Canal which has a length of 25,000 ft. with discharge capacity of about 49,000 cusecs, and terminates at an automatic gate control headworks at about 12 km downstream located near old Bong Escape Headworks.