North-South Carrier, Water pipeline system in eastern Botswana.

The North-South Carrier is a buried pipeline that carries raw water 360 kilometres from the Letsibogo Dam on the Motloutse River south to a treatment plant and balancing reservoir at Mmamashia, about 15 kilometres northeast of Gaborone. Phase 1 was completed in 2000. Pumping stations at Letsibogo, Moralane, Palapye and Serorome Valley move the water, with break-pressure tanks at Moralane, Thoti Hill, Mameno and Lose Hill.

Construction of this water pipeline project began in the late 1990s to meet rising water demand in southern regions, with initial operations starting in 2000. The system grew out of the need to provide reliable water supply as the country's growth accelerated.

The pipeline system transformed water access for communities in eastern Botswana, shifting from traditional groundwater wells to sustainable surface water distribution.

The pipe is buried along the eastern road and rail corridor, so there is no public access to the line itself; the visible features are the Letsibogo Dam on the Motloutse River and the treatment plant and balancing reservoir at Mmamashia, about 15 km northeast of Gaborone. Pumping stations stand at Letsibogo, Moralane, Palapye and Serorome Valley, with break-pressure tanks at Moralane, Thoti Hill, Mameno and Lose Hill.

The pipeline is buried along its whole route, and the 1994 environmental review for Norwegian Agency for Development Cooperation funding found its impact tolerable provided topsoil and subsoil were removed and replaced unmixed, so native vegetation could regenerate along the corridor. The review also called the handling of socio-economic and archaeological issues particularly outstanding.