Environment Database Freshwater resources (long term annual average, billion m3)
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Last updated: March 2018

Contact: ENV.Stat@oecd.org

Austria: Long-term annual average 1961-90

Belgium: Data exclude underground flows and include estimates

Canada: Long-term annual average 1971-2004

Chile: Long-term annual average 2000-2014

Colombia: Long-term annual average 1974-2012

Czech Republic: The long-term annual average refers to the latest 20 years

Denmark: Long-term annual average 1995-2015

Estonia: Long-term annual average refers to the latest 30 years and includes only data about fresh surface water

France: Long-term annual average : 1981-2010. Inflow and outflow: outflow is computed using the throughput of rivers having their source in France but the mouth outside France; measures are taken at the French border using the daily throughputs. Precipitation and real evapotranspiration data are derived from a gridded atmospheric model (grid point of 8 by 8 km2) applied to the territory of metropolitan France.

Germany: Long-term annual average 1995-2015

Hungary: Long-term annual average 1971-2000

Ireland: Long-term annual average 1981-2010. Groundwater figures are not available and therefore are not included.

Israel: Long-term annual average 2000-2013

Italy: Long-term annual average 1971-2000

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1974-2003

Latvia: Long-term annual average 2005-2013

Lithuania: Long-term annual average 2000-2014

Mexico: The long-term annual average covers 30 years

Netherlands: Long-term annual average 1981-2010

New Zealand: Long-term annual average 1995-2014

Norway: The data for precipitation and evotranspiration refer to the period LTAA (long-term annual average) 1961-90 whereas the others to the period LTAA 1981-2010, that is why precipitation minus evotranspiration is different from internal resources.

Poland: Long-term annual average 1951-2014. Estimates on the base of mean annual flow. For more information, see: http://www.kzgw.gov.pl/ , http://www.pgi.gov.pl/ , http://www.psh.gov.pl/ , http://www.imgw.pl/

Slovak Republic: Long-term annual average is 1961-1990 for internal resources, 1961-2000 for external inflow

Slovenia: Long-term annual average is 1971-2000

Sweden: Long-term annual average : 1990-2009. The difference between precipitation and evapotranspiration refers to storage

Switzerland: Long-term annual average : 1981-2010

Turkey: Long-term annual average: data for internal flow refers to the period 1980-2011

Costa Rica: The long-term annual average refers to 1990-2014

Russia: The long-term annual average refers to 1936-1980

Environment Database Freshwater resources (long term annual average, billion m3)Unit of measure usedCubic metresPower codeBillionsOther comments

Last updated: March 2018

Contact: ENV.Stat@oecd.org

Austria: Long-term annual average 1961-90

Belgium: Data exclude underground flows and include estimates

Canada: Long-term annual average 1971-2004

Chile: Long-term annual average 2000-2014

Colombia: Long-term annual average 1974-2012

Czech Republic: The long-term annual average refers to the latest 20 years

Denmark: Long-term annual average 1995-2015

Estonia: Long-term annual average refers to the latest 30 years and includes only data about fresh surface water

France: Long-term annual average : 1981-2010. Inflow and outflow: outflow is computed using the throughput of rivers having their source in France but the mouth outside France; measures are taken at the French border using the daily throughputs. Precipitation and real evapotranspiration data are derived from a gridded atmospheric model (grid point of 8 by 8 km2) applied to the territory of metropolitan France.

Germany: Long-term annual average 1995-2015

Hungary: Long-term annual average 1971-2000

Ireland: Long-term annual average 1981-2010. Groundwater figures are not available and therefore are not included.

Israel: Long-term annual average 2000-2013

Italy: Long-term annual average 1971-2000

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1974-2003

Latvia: Long-term annual average 2005-2013

Lithuania: Long-term annual average 2000-2014

Mexico: The long-term annual average covers 30 years

Netherlands: Long-term annual average 1981-2010

New Zealand: Long-term annual average 1995-2014

Norway: The data for precipitation and evotranspiration refer to the period LTAA (long-term annual average) 1961-90 whereas the others to the period LTAA 1981-2010, that is why precipitation minus evotranspiration is different from internal resources.

Poland: Long-term annual average 1951-2014. Estimates on the base of mean annual flow. For more information, see: http://www.kzgw.gov.pl/ , http://www.pgi.gov.pl/ , http://www.psh.gov.pl/ , http://www.imgw.pl/

Slovak Republic: Long-term annual average is 1961-1990 for internal resources, 1961-2000 for external inflow

Slovenia: Long-term annual average is 1971-2000

Sweden: Long-term annual average : 1990-2009. The difference between precipitation and evapotranspiration refers to storage

Switzerland: Long-term annual average : 1981-2010

Turkey: Long-term annual average: data for internal flow refers to the period 1980-2011

Costa Rica: The long-term annual average refers to 1990-2014

Russia: The long-term annual average refers to 1936-1980