Water Resources Worldwide

WATERLIT  1975+ - Global, regional, national, and local coverage
Hydrotitles   1975+ - Geosystems, UK
AQUAREF  1970+ - Inland Waters Directorate of Environment, Canada
DELFT HYDRO   1977 - 87 - Delft Hydraulics Laboratory of the Netherlands.

Holding libraries in South Africa are indicated and WATERLIT offers document delivery from the CSIR, South Africa.