Lesotho Highlands Development Authority


The Lesotho Highlands Water Project (LHWP) is a multi-phased project to provide water to the Gauteng region of South Africa and to generate hydro-electricity for Lesotho. It was established by the 1986 Treaty signed by the governments of the Kingdom of Lesotho and the Republic of South Africa. The project entails harnessing the waters of the Senqu/Orange River in the Lesotho highlands through the construction of a series of dams for the mutual benefit of the two countries. Phase I of the project was completed in 2003 and inaugurated in 2004, and Phase II is currently underway.

Phase II

  • Advanced Infrastructure 88%
  • Polihali Dam 5%
  • Polihali Transfer Tunnel 5%
  • updated on: 22-09-2023

Katse Dam

  • 84.66% of the capacity of the dam
  • updated on: 30-06-2024

Mohale Dam

  • 99.50% of the capacity of the dam
  • updated on:30-06-2024