Simulating the hydrology and water resources of large basins in southern Africa

Denis A. Hughes, Raphael Tshimanga, Sithabile Tirivarombo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There are a number of problems associated with developing water resources management strategies in the large basins of Africa where data are scarce. This paper reports on some initial applications of drought assessment methods and a hydrological model in the Zambezi and Congo basins, using global rainfall data sets as the main input information. The drought analyses using CRU and GHCN rainfall data for the Zambezi show broad agreement, but some important local variations. The results are related to FAO crop production statistics, but further testing of alternative drought indices is required. Gauged streamflow data (12 sites) and CRU rainfall data were successfully used to calibrate and validate the Pitman monthly time-step rainfall-runoff model for many parts of the Congo basin. Problems were experienced in one of the headwater tributaries and in the ungauged central parts of the basin. Further work will include assessments of future climate change scenarios and their uncertainty.

Original languageEnglish
Title of host publicationGlobal Change: Facing Risks and Threats to Water Resources
Pages591-597
Number of pages7
Volume340
Publication statusPublished - 2010
Event6th World FRIEND Conference "Global Change: Facing Risks and Threats to Water Resources", FRIEND 2010 - Fez, Morocco
Duration: Oct 25 2010Oct 29 2010

Other

Other6th World FRIEND Conference "Global Change: Facing Risks and Threats to Water Resources", FRIEND 2010
CountryMorocco
CityFez
Period10/25/1010/29/10

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All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

Cite this

Hughes, D. A., Tshimanga, R., & Tirivarombo, S. (2010). Simulating the hydrology and water resources of large basins in southern Africa. In Global Change: Facing Risks and Threats to Water Resources (Vol. 340, pp. 591-597)