297 datasets found

This map provides data and information about the major groundwater resources of the world. About 35% of the area of the continents (excluding the Antarctic) is underlain by relatively homogeneous aquifers, 18% is endowed with groundwater, some of which are extensive, in geologically complex regions. Nearly half of the continental areas contain generally minor occurrences of groundwater that are restricted to the near-surface unconsolidated rocks, where groundwater resources are usually sufficient for small to medium-sized population centres.For more information, visit: www.whymap.org

The Ocotepeque-Citala Aquifer is a small alluvial transboundary aquifer shared by Honduras and El Salvador. It is located in a mountainous valley and is characterised by strong links between groundwater and surface water, in this specific case the transboundary Río Lempa.

This layer presents wastewater discharge points and the sensitivity of receiving areas. Those data were collected from the reporting of European Union Member States, as part of the Urban Waste Water Treatment Directive (UWWTD) implementation, which concerns the collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors. Its objective is to protect the environment from the adverse effects of the above mentioned waste water discharges. For more information, visit the UWWTD waterbase website: www.eea.europa.eu/data-and-maps/data/waterbase-uwwtd-urban-waste-water-treatment-directive-4#tab-european-data, and access the Directive: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31991L0271

The 1992 UNECE Convention aims to protect and ensure the quantity, quality and sustainable use of transboundary water resources by facilitating cooperation, and provides an intergovernmental platform for the day-to-day development and advancement of transboundary cooperation. Negotiated as a regional instrument, it turned into a universally available legal framework for transboundary water cooperation, following the entry into force of amendments in February 2013, opening it to all UN Member States. As of 1st March 2016, countries outside the ECE region can accede to the Convention.The 1997 United Nations Convention on the Law of the Non-Navigational Uses of International Watercourses is the only treaty governing shared freshwater resources that is of universal applicability. It is a framework convention, in the sense that it provides a framework of principles and rules that may be applied and adjusted to suit the characteristics of particular international watercourses.

This water consumption is expressed in liters/capita/day. The consumption of potable water is widely variable, with a large gap between cities. Household consumption per capita varies from 28 to 631 liters per day, a factor of 20.The full data are available online. For more information, visit: www.waterstatistics.org

This layer presents wastewater discharge points and the type of water body in which used water is discharged. Those data were collected from the reporting of European Union Member States, as part of the Urban Waste Water Treatment Directive (UWWTD) implementation. The Directive concerns the collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors. Its objective is to protect the environment from the adverse effects of the above mentioned waste water discharges.For more information, visit the UWWTD waterbase website: www.eea.europa.eu/data-and-maps/data/waterbase-uwwtd-urban-waste-water-treatment-directive-4#tab-european-data

This layer shows the demographic growth rate between 1992 and 2015, and provides baseline information for the analysis of the evolution of "Millenium Development Goal (MDG) 7: Ensure environmental sustainability" water-related targets.

The 2015 Map of Transboundary Aquifers of the World (2015 TBA Map) shows the information presently available on the occurrence and extent of Transboundary Aquifers worldwide. There are now 592 identified transboundary aquifers (including 226 transboundary ‘groundwater bodies' as defined in the European Union Water Framework Directive, EU WFD, underlying almost every nation. The map is based on the most recent results of an inventory of many projects of many projects carried out around the world within the framework of the Internationally Shared Aquifer Resources Management (ISARM) Programme launched by UNESCO-IHP in 2000.For more information, visit: www.isarm.org

This layer shows the percentage of safely treated wastewater that is being used in the Arab region, mostly for irrigation and groundwater recharge. At the Arab regional level, 23% of the safely treated wastewater is being used.For more information, access the 2017 UN World Water Development Report: http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/2017-wastewater-the-untapped-resource/

Also called the dependency ratio indicator. Methods of calculation:Dependency ratio = 100 percent*(IWR)/ ([IWR] + [IRWR]) (Equation 6) IWR = SW1IN + SW2IN + SWPR + SWPL + GWIN (Equation 7) Where: IWR = total volume of incoming water resources from neighbouring countries; IRWR = internal renewable water resources; SW1IN = volume of surface water entering the country which is not submitted to treaties; SW2IN= volume of surface water entering the country which is secured through treaties; SWPR = accounted flow of border rivers; SWPL = accounted part of shared lakes; GWIN = groundwater entering the country. For more information, visit: http://www.fao.org/nr/water/aquastat/maps/index.stm and http://www.fao.org/docrep/005/y4473e/y4473e07.htm

Area equipped for irrigation with surface water as percentage of area equipped for irrigation. The statistics with a reference year closest to year 2005 were selected for this version 5 of the Global Map of Irrigation Areas.For mor information, visit: http://www.fao.org/nr/water/aquastat/irrigationmap/index10.stm

Data is given as the percentage of water abstracted for drinking supply that comes from desalination of marine water and/or from recycled water. Other abstraction sources include: groundwater, spring water, surface water, and imported water.

The information presented highlights large flood events from 1985 to 2016 identified by the Dartmouth Flood Observatory. For more information, visit: floodobservatory.colorado.edu/Archives/index.htmlFor mapping purposes, some types of flood events have been merged into one, under the "MAINCAUSEF" attribute. Please refer to the "MAINCAUSE" attribute for original data.

The Groundwater Natural Background Quality indicators stands for the percentage of the transboundary aquifer (TBA) area where groundwater natural quality satisfies local drinking water standards.In north-eastern Africa, parts of the Middle East and Northern India and Pakistan, low recharge values in TBAs are combined with high population densities. In these areas, return flows from irrigation and other human induced recharge appear to play a major role in the sustainability of groundwater resource utilization. Very low natural quality (< 20 per cent of the aquifer area) coincides with TBAs highly impacted by irrigation return flows in densely populated areas with low to medium natural recharge, like the Nubian, Indus, Pre Caspian TBAs.For more information, visit: https://ggis.un-igrac.org/ggis-viewer/viewer/twap/public/default

This layer presents the ratio of female learners to school toilets in 100 schools in 3 provinces of El Salvador. On average, 56 male learners share one toilet, whereas 51 female learners share the same toilet. From our responses, 9 schools indicated they had no toilet facilities, and data is missing for 3 schools.

Total charges is expressed in US dollars. The amount of total charges is derived from the addition of total charges for drinking water, environmental charges, and VAT and/or other taxes.The full data are available online. For more information, visit: www.waterstatistics.org

Landfills are rarely properly constructed or lined and therefore represent a potential source of contamination.Solid waste in the form of hundreds of unregulated landfills and illegal dumping sites in Croatia, Bosnia-Herzegovina, Montenegro and Albania constitutes one of the main threats to the overall groundwater quality of the Dinaraic Karst Transboundary Aquifer System (DIKTAS). For the vulnerable karst environment of the Dinaric region, which has a very limited auto-purification capacity, this is the most serious current as well as (potential) future problem.Data were collected in the framework of the DIKTAS project. For more information, visit: http://diktas.iwlearn.org/resources/projectdocuments/transboundart-diagniostics-analysis/transboundary-diagnostic-analysis-tda/view

Drought severity measures the average length of droughts times the dryness of the droughts from 1901 to 2008. Drought is defined as a contiguous period when soil moisture remains below the 20th percentile. Length is measured in months, and dryness is the average number of percentage points by which soil moisture drops below the 20th percentile.

This layer shows the volume of collected wastewater in the Arab States, expressed in millions of cubic meters. Access to improved sanitation is largely prevalent in the Arab region, but connections to sewerage networks and wastewater treatment facilities remain more limited. Network coverage is generally provided in larger urban centers, while septic tanks and cesspits remain common in rural areas and in the region's least developed countries. Off-network sanitation systems, however, complicate te collection and treatment of wastewater and reduce the ability to sustainably manage wastewater as a resource in most areas. For more information, acces the 2017 UN World Water Development Report: http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/2017-wastewater-the-untapped-resource/

The total surface area of the Adriatic basin in the four countries is 65,545 km² while the Black Sea basin covers 44,865 km² of the project area. Dash lines represent the limit between sub-basins. Data was collected in the framework of the DIKTAS project. For more information, visit the DIKTAS project website: http://diktas.iwlearn.org/resources/projectdocuments/transboundart-diagniostics-analysis/transboundary-diagnostic-analysis-tda/view