298 datasets found

This layer shows limits pose by challenges and capacities to African cities. Although the main challenges in terms of magnitude exist in the larger cities, these are also relatively better-placed in terms of institutional and economic capacity to address the problems through economies of scale. Most smaller cities lack this advantage and clearly need to focus on capacity-building as a necessary step towards improving their water and wastewater management systems. 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/

Water accounts for the main source of production of electrical power in the Dinaric Alps, and contribute significantly to the countries’ economies. Albania gains 83 % of all electricity from hydropower plants, Montenegro 75 %, Bosnia and Herzegovina 60% and Croatia 54 %.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

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/

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/

Descripción de unidades correlacionales de suelos en la Región Trifinio.Información extraida de la publicación: Catálogo de Objetos Geográficos, Proyecto. "Acuífero Esquipulas-Ocotepeque-Citalá". UNESCO-PHI, UICN, Agencia Suiza para el Desarrollo y la Cooperación COSUDE. Publicación: Septiembre 2014