The overall objective of the Department of Water Affairs is to assess, develop and protect Botswana`s water resources for sustainable contribution to socio-economic growth.

In order to provide effective leadership for water resources planning, development and management, the department will assist and advises in the formulation of water resources development and management policies.
The Department assesses, plans, develops and manages water resources for short, medium and long term purposes.

It also administers the water law and other related legislations, and liaises with the riparian users of nation and international rivers on the saving, conservation and protection of water resources. For more on water affairs.