Katse_Dam=The Katse Dam is a key component of the Lesotho Highlands Water Project and is part of Phase 1 (usually referred to as LHWP Phase 1A). Located in the Malibamatso Valley just below the Bokong River the Katse Dam was completed in 1997. The Dam is the water storage and collection area from which all transfers from Lesotho to South Africa flow through approximately 80 km of concrete lined tunnels.

The reservoir formed by the Katse Dam is very narrow, winding and deep with a surface area at full supply level of only 35,8 kmē. The relatively small surface area together with the low evaporation rate at the dam result in very low evaporation losses from the reservoir water surface with approximately 10 percent of the evaporation experienced at Vaal Dam for the same storage.

Image: ORASECOM