118
S. Kusangaya et al.
Table 5
(continued)
Author
Area of study
Period of analysis Conclusion
UNESCO (2004)
Southern Africa
2000–2003
Rainfall-runoff models were identified as potentially useful tools that could
provide a vital component in the regional assessment of water resources
availability enquired for setting up and running models
Fanta et al. (2001)
Southern Africa
1940–2000
The study has shown that runoff in the region ranges from over
320 mm year”1 in the Lower Zambezi and the highlands of Tanzania to less
than 10 mm year”‘ in the deserts of Namibia and the Kalahari. There is
evidence of declining runoff in parts of Zambia, Angola, Mozambique and
the High Veld in South Africa. The recent decline seems to have started
from around 1975
Sarron (2005)
South Africa
1996–2004
Farming activities in Wetlands reduce discharge of surface rivers since
wetlands are river sources
Troy et al. (2007)
South Africa
2007
Landuse change accounts for small scale observed increase in runoff at
catchment scale
Bullock (1992)
Zimbabwe, Zambia and Malawi 1992
Dambos reduce flows in certain regions of Zimbabwe, Malawi and Zambia
(continued)