Tarbela Dam is an earth-filled dam on the Indus River in Pakistan’s Khyber Pakhtunkhwa province. It is mainly located in Haripur Tehsil.The dam lies in the vicinity of the town of Topi, 105 km (65 mi) northwest of Islamabad and 125 km (80 mi) east of Peshawar. It is the largest earth-filled dam in the world. The dam is 143 metres (470 ft) high above the riverbed, and its reservoir, Tarbela Lake, has a surface area of approximately 250 square kilometres (97 sq mi).