297 datasets found

The Environmental Water Stress in Transboundary River Basins indicator focuses on the water quantity aspect and considers hydrological alterations from monthly dynamics of the natural flow regime due to anthropogenic water uses and dam operations.For more information, visit: http://twap-rivers.org/

This map provides information on Total Dissolved Solids (TDS) in mg/L in the Ocotepeque-Citala Aquifer in dry season (April).

Upstream protected land measures the percentage of total water supply that originates from protected ecosystems. Modified land use can affect the health of freshwater ecosystems and have severe downstream impacts on both water quality and quantity. IUCN category V protected lands, as well as a large number of unclassi ed proposed lands, breeding centers, municipal parks, cultural and historic sites, and exclusively marine areas, are excluded.

This map presents the intrinsic vulnerability of groundwater systems and the sensitivity or resistance of those systems to natural disasters. The concept of groundwater vulnerability takes into account that the geological characteristics of the aquifers and the physical environment provide different degrees of protection against natural or human activities related impacts. Aquifers in karst formations or in fluvial unconsolidated deposits of large rivers are highly vulnerable to floods and droughts, and coastal aquifers are particularly prone to tsunamis, while the groundwater resources in deep-seated aquifers are naturally less vulnerable and more resilient to external influences due to their protection from the earth surface by geological layers with low permeability. Some of these aquifers, if accurately managed, could supply drinking water in the post-disaster emergency phase, replacing damaged water supply systems.

Data is given as the percentage of water abstracted for drinking supply that comes from surface water. Abstraction sources include: groundwater, spring water, surface water, other sources and imported water.The full data are available online. For more information, visit: www.waterstatistics.org

The world’s transboundary river basins span 151 countries, include more than 2.8 billion people (around 42 % of the world’s population), cover 62 million km2 (42 % of the total land area of the Earth), and produce around 22 000 km3 of river discharge each year (roughly 54 % of the global river discharge).From earlier known transboundary river basin delineations ( 214 transboundary basins identified by UNDESA (1978), 261 by Oregon State University (1999), 263 by OSU (2002), 276 by OSU (2012)) the number has risen to 286.For more information, visit: http://twap-rivers.org/

The Trifinio Fraternidad transboundary biosphere reserve is a tri-national biosphere reserve located between El Salvador, Guatemala and Honduras. It is the first transboundary biosphere reserve in Central America and represents a major contribution to implementation of the Mesoamerican Corridor. It includes key biodiversity areas, such as Montecristo National Park and a variety of forest ecosystems.For more information, visit: http://www.unesco.org/new/en/natural-sciences/environment/ecological-sciences/man-and-biosphere-programme/

Ramsar Sites are wetlands considered to be of international importance. The international convention which forms the basis for their identification is commonly referred to as the "Ramsar Convention" after the city in Iran where the convention was signed in 1971. The Convention is an intergovernmental treaty that provides the framework for the conservation and wise use of wetlands and their resources.There are currently over 2,200 Ramsar Sites around the world. They cover over 2.1 million square kilometres, an area larger than Mexico.For more information, visit: www.ramsar.org

This map was developed for the WASH section of the UNHCR by CartONG. It displays boreholes assessed by WASH focal points in different refugee sites and provides information on different types of pumps that are used, the depth in meter and the energy source. It also provides information on the concentration of chemical pollutants in water such as nitrate, arsenic and ammonia.For more information, visit: http://wash.unhcr.org/wash-gis-portal/

This layer shows events where the United Nations World Water Development Report 2017, entitled "Wastewater, The Untapped Resource" will be featured and discussed for its launch on 22 March 2017.The development of the WWDR, coordinated by UNESCO's World Water Assessment Programme (WWAP), is a joint effort of the UN agencies and entities which make up UN-Water, working in partnership with governments, international organizations, non-governmental organizations and other stakeholders.For more information, visit UNESCO-WWAP page: http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/

This layer presents ecohydrology engineering solutions that are used in 20 demonstration sites worldwide, which apply ecohydrology as a way of dealing with environmental challenges through engineering solutions. Since 2011, UNESCO-IHP promotes the establishment of various demosites around the world to apply ecohydrology principles and solutions in watersheds at all scales, to solve both social and environmental issues. The full data are available online. For more information, visit the Ecohydrology Web Platform: http://ecohydrology-ihp.org/demosites/

This layer shows rivers and streams in the Dinaric Alps region. Data were 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

This layer presents wastewater discharge points where comprehensive studies indicate whether or not the discharge adversely affects the environment. In 2012, 6.1% of discharge points had been studied, out of which 1.3% were affecting the environment. Such information was provided by Member States to the Commission. 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

Return flow ratio measures the percent of available water previously used and discharged upstream as wastewater. Higher values indicate higher dependence on treatment plants and potentially lower water quality in areas that lack sufficient treatment infrastructure and policies. Arid areas with low water use are shown in grey, and scored as low stress when calculating aggregated scores.

Area equipped for irrigtion with groundwater as a percentage of total 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

Amount is expressed in cubic meters.

Ramsar sites are wetlands recognized for their international importance, according to the eponymous Convention (signed in 1971, entered into force in 1975). The Convention's mission is "the conservation and wise use of all wetlands through local and national actions and international cooperation, as a contribution towards achieving sustainable development throughout the world". As of March 2017, there are over 2200 Ramsar sites around the world, covering over 2.1 million km².For more information about wetlands of international importance, visit the convention's website: http://www.ramsar.org/about/the-importance-of-wetlands