{
  "url": "https://openlegislation.uk/eu-directive-2000-60/annex-II/division-1/division-1.2/division-1.2.1",
  "json_url": "https://openlegislation.uk/eu-directive-2000-60/annex-II/division-1/division-1.2/division-1.2.1.json",
  "legislation": "eudr/2000/60",
  "legislation_title": "Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy",
  "legislation_url": "https://openlegislation.uk/eu-directive-2000-60",
  "path": "annex/II/division/1/division/1.2/division/1.2.1",
  "kind": "division",
  "number": "1.2.1",
  "heading": "Rivers",
  "text": "System A\nFixed typology\nDescriptors\nEcoregion\nEcoregions shown on map A in Annex XI\nType\nAltitude typology\nhigh > 800 m\nmid-altitude 200 to 800 m\nlowland < 200 m\nSize typology based on catchment area\nsmall 10 to 100 km2\nmedium > 100 to 1 000 km2\nlarge > 1 000 to 10 000 km2\nvery large > 10 000 km2\nGeology\ncalcareous\nsiliceous\norganic\nSystem B\nAlternative characterisation\nPhysical and chemical factors that determine the characteristics of the river or part of the river and hence the biological population structure and composition\nObligatory factors\naltitude\nlatitude\nlongitude\ngeology\nsize\nOptional factors\ndistance from river source\nenergy of flow (function of flow and slope)\nmean water width\nmean water depth\nmean water slope\nform and shape of main river bed\nriver discharge (flow) category\nvalley shape\ntransport of solids\nacid neutralising capacity\nmean substratum composition\nchloride\nair temperature range\nmean air temperature\nprecipitation",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2000/60/annex/II/division/1/division/1.2/division/1.2.1",
    "retrieved_at": "2026-11-01T15:23:01.769169+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}