233 datasets found

Area actually irrigted, as a 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

Inter-annual variability measures the variation in water supply between years.

This map presents information on coastal aquifers in the Mediterranean. For additional information on the assessment of risks and uncertainties relating to Mediterranean coastal aquifers and legislative, policy and institutional frameworks, visit: http://www.inweb.gr/index.php?option=com_wrapper&view=wrapper&Itemid=220

This map presents areas identified as having saline groundwater (i.e. salinity regionally exceeding 5 g/l), and where groundwater is generally not suitable for human consumption.For more information, visit: www.whymap.org

Data is given as the percentage of water abstracted for drinking supply that comes from groundwater. Abstraction sources include: groundwater, spring water, surface water, other sources and imported water.

This map presents the percentage of population with access to improved sanitation for the last collected values in world cities during the period 1990 to 2007. It also provides information for older data up to 1990. For more information, visit: http://urbandata.unhabitat.org

This layer shows UNESCO World Heritage site subjected to flood risk.

This map presents areas of heavy groundwater abstraction with over-exploitation around the world.For more information, visit: www.whymap.org

Upstream storage measures the water storage capacity available upstream of a location relative to the total water supply at that location from 1950 to 2010. Higher values indicate areas more capable of buffering variations in water supply (i.e. droughts and floods) because they have more water storage capacity upstream.

The Human Water Stress indicator deals with the quantity of water available per person per year relative to the internal and upstream area water supplies, on the premise that the less water available per person, the greater the impact on human development and well-being, and the less water there is available for other sectors.For more information, visit: http://twap-rivers.org/

Calculated as the long-term mean transboundary groundwater recharge, including man-made components, divided by the number of inhabitants of the area occupied by the aquifer. Indicator is expressed in m3/yr/capita

Measures the percentage of freshwater amphibian species classified by IUCN as threatened. Higher values indicate more fragile freshwater ecosystems and may be more likely to be subject to water withdrawal and discharge regulations. For each catchment, the total number of threatened freshwater amphibian species was counted and divided by the total number of freshwater amphibian species whose ranges overlap the catchment. Catchments with fewer than two amphibian species were excluded.

Seasonal variability measures variation in water supply between months of the year.

Data is given in m³/capita/year.The full data are available online. For more information, visit: www.waterstatistics.org

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/

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.