Average annual groundwater recharge is the amount of water that is estimated to annually infiltrate soils, including water from rivers and streams that lose it to underlying strata. In general, this figure would represent the maximum amount of water that could be withdrawn annually without ultimately depleting the groundwater resource. These data are estimated in a variety of ways (see footnotes and J. Margat), and caution should be used in comparing values for different countries. Per capita recharge is the amount of water that annually infiltrates soils on a per person basis, using year 2000 population estimates from the UN Population Division. Annual total groundwater withdrawals refer to abstractions from all groundwater sources--even nonrenewable sources. The percent of annual recharge refers to total groundwater withdrawals. Per capita annual withdrawals were calculated using national population data for the year of data shown for withdrawals. Sectoral share of withdrawals of groundwater is classified as domestic (drinking water, homes, commercial establishments, public services [e.g., hospitals], and municipal use or provision); industry (including water withdrawn to cool thermoelectric plants); and agriculture (irrigation and livestock). Desalinated water production refers to the removal of salt from saline waters--usually seawater--using a variety of techniques including reverse osmosis. Most desalinated water is used for domestic purposes. Totals may not add to 100 because of rounding.
Data availbale on the CD-ROM: World Freshwater Resources, International Hyrdological Program, UNESCO
The Programme started as the International Hydrological Decade (IHD, 1965-1974) and was followed by the International Hydrological Programme (IHP) in 1975. Since its inception, much progress has been achieved regarding methodologies for hydrological studies and training and education in the water sciences. Although the general objectives remain valid, greater emphasis is being put on the role of water resources management for sustainable development and the adaptation of the hydrological sciences to cope with the expected changing climate and environmental conditions. Another important objective is to integrate the developing countries into the worldwide ventures of research and training.
The principal modes of execution of IHP, which is a long-term programme executed in phases of a 6-year duration, have been working groups, symposia, workshops, publications and extra-budgetary projects, the latter especially through the UNESCO Regional Offices where Regional Hydrologists are located.
GEO Data Category:
Water Consumption and Resources
Water, groundwater, annual groundwater recharge, national level
World Resources Institute
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GIS Data Info
Statistics Data Info
The value "-9999" corresponds to "No Data"
National data has been collected for various years, between 1985 and 1998. The aggregations should be used as indicative values only.
Calculated pre 1991-1992 relative country share
Former Yugoslavia SFR:
Groundwater recharge is the average annual amount of water that is estimated to infiltrate soils, including water from rivers and streams that lose it to underlying strata. In general, this figure would represent the maximum amount of water that could be withdrawn annually without ultimately depleting the groundwater resource.
Data Source: Groundwater resources and withdrawal data come from several sources: J. Margat, Les Eaux Souterraines Dans Le Monde (BRGM--Services Sol et Sous-Sol, Departement Eau, Orleans, France, December 1990); J. Margat and D. Vall‚e, Water Resources and Uses in the Mediterranean Countries (Blue Plan, Sophia Antipolis, 1999); I.A. Shiklomanov, Comprehensive Assessment of the Freshwater Resources of the World (Stockholm Environment Institute, Stockholm, 1997); Organisation for Economic Co-Operation and Development (OECD), OECD Environmental Data Compendium 1997, (OECD, Paris, 1997); and Economic Commission for Europe, The Environment in Europe and North America (United Nations, New York, 1992).