Irrigation potential in Africa:A basin approach
Irrigation potential in Africa:
A basin approach
FAO LAND AND WATER BULLETIN 4
FAO Land and Water Development Division
The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.
M-54
ISBN 92-5-103966-6
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© FAO 1997
Chapter 2: Methodology and data used
Definition of irrigation potential
Definition of the basic units
Identification of the physical resourcesLand resources
Water resources
Irrigation water requirementsReview of existing information on irrigation potential
Environmental considerations
Interpretation of the results
Chapter 3: Soil and terrain suitability for surface irrigation
Methodology and definitions used
Potential yield
Surface water and groundwater
Internally and globally produced renewable water resources
Periods of reference
Evaporation from wetlands and lakes
Chapter 5: Irrigation water requirements
Delineation of irrigation cropping pattern zones
Definition of the climate stations' area of influence
Combination of cropping pattern zones with the climate stations
Calculation of irrigation water requirements
Chapter 6: Review of existing information on irrigation potential
Methodology and limitations
Results per major basin groupThe Senegal River basin
The Niger River basin
The Lake Chad basin
The Nile Basin
The Rift Valley
The Shebelli - Juba basin
The Congo/Zaire River basin
The Zambezi basin
The Okavango basin
The Limpopo basin
The Orange basin
The South Interior
The North Interior
The Mediterranean coast
The North West Coast
The West Coast
The Gambia River Basin
The Volta Basin
The West Coast, excluding the Gambia River and Volta basins
The west central coast
The south west coast
The South Atlantic coast
The Indian Ocean coast
The East Central coast
The North East coast
Madagascar
Islands
Chapter 7: Environmental considerations in irrigation development
Potential environmental impacts of irrigation development
Waterlogging and salinization
Water-borne and water-related diseases
Potential environmental impacts of darns and reservoirs
Socio-economic impacts irrigation schemes
Alternatives to mitigate the negative impacts of irrigation projectsThe role of wetland and the impacts of water development projects
Wetlands in the West African Sahel
The Hadejia-Nguru wetlands
Effects of the Jonglei canal on the Sudd swampsRegional aspects of environmental impacts and 'hot spots'
The arid North African sub-region
The Sudano-sahelian Belt
Humid West Africa
The Congo/Zaire basin
East Africa
Southern AfricaSummary of environmental impact hazard related to irrigation development
Chapter 8: General results and conclusions
Review of existing formation on irrigation potential
Conclusions
Chapter 9: Main sources of information