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 Proportion of surface water bodies (%)
Characteristic Description
Name Proportion of surface water bodies (%) by Geographic localization (NUTS - 2013) and Classification of chemical status; Irregular
Regularity Triennial
Source Portuguese Environment Agency
First available period 2012
Last available period 2024
Dimensions
  • Data reference period
  • Geographic localization (NUTS - 2013)
  • Classification of chemical status
Concepts
  • REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).
  • GOOD CHEMICAL STATUS ON SURFACE WATER:  Chemical status of a surface water's body which pollutant concentrations fulfill the standards of environmental quality established by specific legislation.
  • SURFACE WATER:  Water which flows over, or rests on the surface of a land mass, natural watercourses such as rivers, streams, brooks, lakes, etc., as well as artificial watercourses such as irrigation, industrial and navigation canals, drainage systems, alluvium (subsurface water) and natural and artificial reservoirs. Excluded are sea-water, permanent bodies of stagnant water both natural and artificial, and transitional waters, such as brackish swamps, lagoons and estuaries.
  • CHEMICAL STATUS:  Indicator that reflects the assessment of chemicals existence which, in natural conditions, would be absent or present in reduced concentrations on a surface water body, and are likely to cause significant damage to water environment, human health, fauna and flora, due to their characteristics of persistence, toxicity and bioaccumulation.
Formule (Area of water bodies by classification / Total area of the territorial unit)*100
Measure unit (symbol) Percentage (%)
Power of 10  0
Observations Indicator that reflects the assessment of the existence of chemicals which, in natural conditions, would be absent or present in reduced concentrations on a surface water body, and are likely to cause significant damage to the water environment, human health, fauna and flora, due to their characteristics of persistence, toxicity and bioaccumulation.
Last update date 13/11/2025


information presented in 23/11/2025