Water
Reports 23FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 2003
Water
Reports 23|
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ISBN 92-5-104899-1
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© FAO 2003
The Aquastat programme
Existing sources of global information on water resources
Renewable and non-renewable water resources
Natural and actual renewable water resources
Exploitable water resourcesInternal renewable water resources, surface water and groundwater
External water resources
Outflow
Water quality and non-conventional water sources
3. METHOD USED TO COMPUTE WATER RESOURCES BY COUNTRY
Data sources
Assessing internal renewable water resources
Scale and impact of evaporation
Assessing external renewable water resources and total resources
Assessing total renewable water resources and the dependency ratio
Assessing exploitable resources
4. WORLD WATER RESOURCES BY COUNTRY
Summary of world water resources
World water resources
The distribution of water
Exploitable renewable resourcesAssessment of results
Data evaluationPrecipitation
Surface water (renewable)
Groundwater (renewable)
Total water resources
Data productionComparison with previous studies
The potential of models for global water resources assessmentDescription of the model
Data sources used in the model
Results of the model and comparison with country-based data
Alaska, Canada and Greenland
Mexico
The United States of AmericaRegion 2: Central America and Caribbean
Region 4: Western and Central Europe
Contrasting climates
A high density of small rivers
Variability of runoff regimesUneven distribution of water resources among the population
Subregional analysisNorthern Africa
Sudano-Sahelian
Gulf of Guinea
Central Africa
Eastern Africa
Indian Ocean Islands
Southern AfricaWater resources in the Africa region
Exchanges and shared resourcesRegion 9: Southern and Eastern Asia
Indian Subcontinent
Eastern Asia
Far East
Southeast Asia
IslandsRegion 10: Oceania and Pacific
ANNEX 1. LIST OF WATER REGIONS AND SUBREGIONS