EarthTrends (http://earthtrends.wri.org) Searchable Database Results Provided by the World Resources Institute (http://www.wri.org) "Water Resources and Freshwater Ecosystems -- Internal Renewable Water Resources (IRWR): Surface water produced internally" "Units: Cubic kilometers (km^3)" ,,1960-2007, World "World {1}","",41178.6, ,,1960-2007, Region/Classification "Asia (excluding Middle East)","",10789.3, "Central America & Caribbean","",1040.2, "Europe","",6235.7, "Middle East & North Africa","",370.3, "North America","",5502.0, "Oceania","",1241.0, "South America","",12197.5, "Sub-Saharan Africa","",3802.6, "Developed Countries","",12934.5, "Developing Countries","",28281.2, "High Income Countries","",8262.5, "Low Income Countries","",7811.9, "Middle Income Countries","",25104.2, ,,1960-2007, Country "Albania","ALB",23.1, "Algeria","DZA",9.8, "Angola","AGO",145.0, "Argentina","ARG",276.0, "Armenia","ARM",6.3, "Australia","AUS",440.0, "Austria","AUT",55.0, "Azerbaijan","AZE",6.0, "Bahrain","BHR",0.0, "Bangladesh","BGD",83.9, "Barbados","BRB",0.0, "Belarus","BLR",37.2, "Belgium","BEL",12.0, "Belgium/Luxembourg","",13.0, "Benin","BEN",10.0, "Bhutan","BTN",95.0, "Bolivia","BOL",277.4, "Botswana","BWA",0.8, "Brazil","BRA",5418.0, "Brunei Darussalam","BRN",8.5, "Bulgaria","BGR",20.1, "Burkina Faso","BFA",8.0, "Burundi","BDI",10.1, "Cambodia","KHM",116.0, "Cameroon","CMR",268.0, "Canada","CAN",2840.0, "Cape Verde","CPV",0.2, "Côte d'Ivoire","CIV",74.0, "Central African Rep","CAF",141.0, "Chad","TCD",13.5, "Chile","CHL",884.0, "China","CHN",2711.5, "Colombia","COL",2112.0, "Comoros","COM",0.2, "Congo","COG",222.0, "Congo, Dem Rep","COD",899.0, "Costa Rica","CRI",75.1, "Croatia","HRV",27.2, "Cuba","CUB",31.6, "Cyprus","CYP",0.6, "Czech Rep","CZE",13.2, "Denmark","DNK",3.7, "Djibouti","DJI",0.3, "Dominican Rep","DOM",21.0, "Ecuador","ECU",432.0, "Egypt","EGY",0.5, "El Salvador","SLV",17.6, "Equatorial Guinea","GNQ",25.0, "Eritrea","ERI",2.7, "Estonia","EST",11.7, "Ethiopia","ETH",120.0, "Finland","FIN",106.8, "France","FRA",176.5, "Gabon","GAB",162.0, "Gambia","GMB",3.0, "Gaza Strip","",0.0, "Georgia","GEO",56.9, "Germany","DEU",106.3, "Ghana","GHA",29.0, "Greece","GRC",55.5, "Guatemala","GTM",100.7, "Guinea","GIN",226.0, "Guinea-Bissau","GNB",12.0, "Guyana","GUY",241.0, "Haiti","HTI",10.9, "Honduras","HND",86.9, "Hungary","HUN",6.0, "Iceland","ISL",166.0, "India","IND",1222.0, "Indonesia","IDN",2793.0, "Iran, Islamic Rep","IRN",97.3, "Iraq","IRQ",34.0, "Ireland","IRL",48.2, "Israel","ISR",0.3, "Italy","ITA",170.5, "Jamaica","JAM",5.5, "Japan","JPN",420.0, "Jordan","JOR",0.4, "Kazakhstan","KAZ",69.3, "Kenya","KEN",20.2, "Korea, Dem People's Rep","PRK",66.0, "Korea, Rep","KOR",62.3, "Kuwait","KWT",0.0, "Kyrgyzstan","KGZ",44.1, "Lao People's Dem Rep","LAO",190.4, "Latvia","LVA",16.5, "Lebanon","LBN",4.1, "Lesotho","LSO",5.2, "Liberia","LBR",200.0, "Libyan Arab Jamahiriya","LBY",0.2, "Lithuania","LTU",15.4, "Luxembourg","LUX",1.0, "Macedonia, FYR","MKD",5.4, "Madagascar","MDG",332.0, "Malawi","MWI",16.1, "Malaysia","MYS",566.0, "Maldives","MDV",0.0, "Mali","MLI",50.0, "Malta","MLT",0.0, "Mauritania","MRT",0.1, "Mauritius","MUS",2.4, "Mexico","MEX",361.0, "Moldova, Rep","MDA",1.0, "Mongolia","MNG",32.7, "Morocco","MAR",22.0, "Mozambique","MOZ",97.3, "Myanmar","MMR",874.6, "Namibia","NAM",4.1, "Nepal","NPL",198.2, "Netherlands","NLD",11.0, "Nicaragua","NIC",185.7, "Niger","NER",1.0, "Nigeria","NGA",214.0, "Norway","NOR",376.0, "Oman","OMN",0.9, "Pakistan","PAK",47.4, "Panama","PAN",144.1, "Papua New Guinea","PNG",801.0, "Paraguay","PRY",94.0, "Peru","PER",1616.0, "Philippines","PHL",444.0, "Poland","POL",53.1, "Portugal","PRT",38.0, "Qatar","QAT",0.0, "Réunion","REU",4.5, "Romania","ROU",42.0, "Russian Federation","RUS",4036.7, "Rwanda","RWA",9.5, "Saint Kitts and Nevis","KNA",0.0, "Saudi Arabia","SAU",2.2, "Senegal","SEN",23.8, "Serbia and Montenegro","YUG",42.4, "Sierra Leone","SLE",150.0, "Slovakia","SVK",12.6, "Slovenia","SVN",18.5, "Somalia","SOM",5.7, "South Africa","ZAF",43.0, "Spain","ESP",109.5, "Sri Lanka","LKA",49.2, "Sudan","SDN",28.0, "Suriname","SUR",88.0, "Swaziland","SWZ",2.6, "Sweden","SWE",170.0, "Switzerland","CHE",40.4, "Syrian Arab Rep","SYR",4.8, "Tajikistan","TJK",63.3, "Tanzania","TZA",80.0, "Thailand","THA",198.8, "Togo","TGO",10.8, "Tunisia","TUN",3.1, "Turkey","TUR",186.0, "Turkmenistan","TKM",1.0, "Uganda","UGA",39.0, "Ukraine","UKR",50.1, "United Arab Emirates","ARE",0.2, "United Kingdom","GBR",144.2, "United States","USA",2662.0, "Uruguay","URY",59.0, "Uzbekistan","UZB",9.5, "Venezuela","VEN",700.1, "Viet Nam","VNM",353.5, "Yemen","YEM",4.0, "Zambia","ZMB",80.2, "Zimbabwe","ZWE",11.3, Footnotes "1 -- World" "Value calculated by WRI" Source "Food and Agriculture Organization of the United Nations (FAO) Land and Water Development Division. 2005. AQUASTAT Information System on Water and Agriculture: Online database. Rome: FAO. Available on-line at http://www.fao.org/waicent/faoinfo/agricult/agl/aglw/aquastat/dbase/index.stm." Technical Notes "Definition:" "Surface water produced internally includes the average annual flow of rivers generated from endogenous precipitation (precipitation occurring within a country's borders). Natural incoming flows originating from outside a country's borders are not included in the total." "" "Years Covered and Frequency of Update:" "Water resources data are typically not available in a time series. Data were collected over a period of 15 to 25 years and compiled in 2003 by the AQUASTAT global information system of water and agriculture. The current AQUASTAT database provides data per 5-year period if available. Data are presented by WRI as a single value for 1960-2007 because, for this variable, AQUASTAT lists only one number for each country over the entire time period covered by the database." "" "AQUASTAT updates their website as new data become available, or when FAO conducts special regional studies." "" "Methodology:" "Surface water resources are usually computed by measuring or assessing total river flow occurring in a country on a yearly basis. Aquifers contribute to surface flows in humid temperate or tropical regions, and, in special cases, in regions called karstic domains (containing a porous karst limestone rock matrix). Where data are available, groundwater resources in humid areas have been considered as equivalent to the base flow of rivers. In karstic domains, a portion of groundwater resources are assumed to contribute to surface water flow." "" "AQUASTAT collects its information from a number of sources--national water resources and irrigation master plans; national yearbooks, statistics and reports; reports from FAO - or other projects; international surveys; and, results from surveys made by national or international research centers. In most cases, a critical analysis of the information was necessary to ensure consistency between the different data collected for a given country." "" "When possible, cross-checking of information between countries was used to improve assessment in countries where information was limited. When several sources give different or contradictory figures, preference was always given to information collected at national or sub-national level. This preference is based on the assumption that no regional information can be more accurate than studies carried out at the country level. Unless proven to be wrong, official rather than unofficial sources were used. In the case of shared water resources, a comparison between countries was made to ensure consistency at river-basin level." "" "For more information, please refer to the following publication: Food and Agriculture Organization of the United Nations (FAO), Water Resources, Development and Management Service. 2003. AQUASTAT Information System on Water and Agriculture: Review of World Water Resources by Country. Available on-line at http://www.fao.org/waicent/faoinfo/agricult/agl/aglw/aquastat/water_res/index.htm. Rome: FAO." "" "Data Reliability:" "While AQUASTAT represents the most complete and careful compilation of water resources statistics to date, freshwater data are generally of poor quality. Information sources are various but rarely complete. Access to information on water resources is still sometimes restricted for reasons related to sensitivity at the regional level. The accuracy and reliability of the information vary greatly among regions, countries, and categories of information, as does the year in which the information was gathered. As a result, no consistency can be ensured at the regional level on the duration and dates of the period of reference." "" "For more information, please refer to the original data source or to the 2003 print publication Review of World Water Resources by Country in FAO's AQUASTAT Programme."