Environment Database Freshwater resources (long term annual average, billion m3)
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Last updated: August 2019

Contact: ENV.Stat@oecd.org

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. Inflow and outflow: overseas territories, the flow of river Rhine and underground water are excluded. Missing data represent less than 1% of river flows.

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 1971-2000

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1986-2015

Latvia: Long-term annual average 1961-2005

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: 1990-2017.

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: August 2019

Contact: ENV.Stat@oecd.org

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. Inflow and outflow: overseas territories, the flow of river Rhine and underground water are excluded. Missing data represent less than 1% of river flows.

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 1971-2000

Japan: Long-term annual average 1971-2006

Korea: Long-term annual average 1986-2015

Latvia: Long-term annual average 1961-2005

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: 1990-2017.

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