Environment Database Freshwater resources (long term annual average, billion m3)
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Last updated: March 2020

Contact: ENV.Stat@oecd.org

Data for EU countries, England and Wales, Iceland, Switzerland and Turkey is provisional. Data for these countries will be updated when Eurostat will have published its final data.

Data for non-OECD countries is sourced from UNSD (https://unstats.un.org/unsd/envstats/qindicators.cshtml)

Australia: Long-term annual average 1911-12 to 2018-19. For more information see http://www.bom.gov.au/water/rwi/#ro_tt/001/2019

Austria: Long-term annual average 1986-2015

Belgium: Long-term annual average 2007-2017; 2013-2017 for Brussels

Canada: Long-term annual average 1971-2004

Chile: Long-term annual average 2000-2014

Colombia: Long-term annual average 1974-2012

Czech Republic: Long-term annual average 1981-2010

Denmark: Long-term annual average 1995-2015

Finland: Long-term annual average 1981-2010

France: Long-term annual average: 1981-2010.

Germany: Long-term annual average 1995-2015

Hungary: Long-term annual average 1971-2000

Ireland: Long-term annual average 1981-2010. Inflow and outflow: data refers to flows of two main rivers crossing with Norther Ireland. Groundwater available for annual abstraction was estimated taking 10% of "Recharge into the Aquifer" (period 1971-2000). Freshwater resources 95% of years was estimated by taking the second lowest annual figure for "Total Renewable Freshwater Resources" over the previous 20 years.

Israel: Long-term annual average 2000-2013

Italy: Long-term annual average 1961-2017

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1986-2015

Latvia: Long-term annual average 1961-2010

Lithuania: Long-term annual average 2000-2015. Evapotranspiration is estimated from one station only in the middle of the country.

Mexico: The long-term annual average covers the period 1981-2010 for precipitations, the other values are annual.

Netherlands: Long-term annual average 1981-2010. Actual evapotranspiration refers to "reference crop evapotranspiration", and therefore internal flow is calculated as precipitation minus reference crop evapotranspiration. It should be noted that in general this results in a lower value for Internal Flow and resulting (Internal) Renewable Fresh Water Resources.

New Zealand: Long-term annual average 1995-2014

Norway: The data for precipitation and evapotranspiration 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 evapotranspiration is different from internal resources.

Poland: Long-term annual average 1981-2010.

Portugal: data on precipitation excludes overseas territories and evapotranspiration is potential, not actual.

Slovak Republic: Long-term annual average is 1961-2000

Slovenia: Long-term annual average is 1971-2000

Sweden: Long-term annual average: 1990-2018. For more information see https://www.smhi.se/data/hydrologi/vattenwebb/om-data-i-vattenwebb/kalibrering-och-utvardering-av-s-hype-1.26735

Switzerland: Long-term annual average: 1981-2010

Turkey: Long-term annual average: data for precipitation refers to the period 1970-2011, data for evapotranspiration to 1980-2011

Costa Rica: The long-term annual average refers to 2001-2017

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 2020

Contact: ENV.Stat@oecd.org

Data for EU countries, England and Wales, Iceland, Switzerland and Turkey is provisional. Data for these countries will be updated when Eurostat will have published its final data.

Data for non-OECD countries is sourced from UNSD (https://unstats.un.org/unsd/envstats/qindicators.cshtml)

Australia: Long-term annual average 1911-12 to 2018-19. For more information see http://www.bom.gov.au/water/rwi/#ro_tt/001/2019

Austria: Long-term annual average 1986-2015

Belgium: Long-term annual average 2007-2017; 2013-2017 for Brussels

Canada: Long-term annual average 1971-2004

Chile: Long-term annual average 2000-2014

Colombia: Long-term annual average 1974-2012

Czech Republic: Long-term annual average 1981-2010

Denmark: Long-term annual average 1995-2015

Finland: Long-term annual average 1981-2010

France: Long-term annual average: 1981-2010.

Germany: Long-term annual average 1995-2015

Hungary: Long-term annual average 1971-2000

Ireland: Long-term annual average 1981-2010. Inflow and outflow: data refers to flows of two main rivers crossing with Norther Ireland. Groundwater available for annual abstraction was estimated taking 10% of "Recharge into the Aquifer" (period 1971-2000). Freshwater resources 95% of years was estimated by taking the second lowest annual figure for "Total Renewable Freshwater Resources" over the previous 20 years.

Israel: Long-term annual average 2000-2013

Italy: Long-term annual average 1961-2017

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1986-2015

Latvia: Long-term annual average 1961-2010

Lithuania: Long-term annual average 2000-2015. Evapotranspiration is estimated from one station only in the middle of the country.

Mexico: The long-term annual average covers the period 1981-2010 for precipitations, the other values are annual.

Netherlands: Long-term annual average 1981-2010. Actual evapotranspiration refers to "reference crop evapotranspiration", and therefore internal flow is calculated as precipitation minus reference crop evapotranspiration. It should be noted that in general this results in a lower value for Internal Flow and resulting (Internal) Renewable Fresh Water Resources.

New Zealand: Long-term annual average 1995-2014

Norway: The data for precipitation and evapotranspiration 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 evapotranspiration is different from internal resources.

Poland: Long-term annual average 1981-2010.

Portugal: data on precipitation excludes overseas territories and evapotranspiration is potential, not actual.

Slovak Republic: Long-term annual average is 1961-2000

Slovenia: Long-term annual average is 1971-2000

Sweden: Long-term annual average: 1990-2018. For more information see https://www.smhi.se/data/hydrologi/vattenwebb/om-data-i-vattenwebb/kalibrering-och-utvardering-av-s-hype-1.26735

Switzerland: Long-term annual average: 1981-2010

Turkey: Long-term annual average: data for precipitation refers to the period 1970-2011, data for evapotranspiration to 1980-2011

Costa Rica: The long-term annual average refers to 2001-2017

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