# 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, Division 1.2.1: Rivers

Extent: E+W+S+N.I.

System A
Fixed typology
Descriptors
Ecoregion
Ecoregions shown on map A in Annex XI
Type
Altitude typology
high > 800 m
mid-altitude 200 to 800 m
lowland < 200 m
Size typology based on catchment area
small 10 to 100 km2
medium > 100 to 1 000 km2
large > 1 000 to 10 000 km2
very large > 10 000 km2
Geology
calcareous
siliceous
organic
System B
Alternative characterisation
Physical and chemical factors that determine the characteristics of the river or part of the river and hence the biological population structure and composition
Obligatory factors
altitude
latitude
longitude
geology
size
Optional factors
distance from river source
energy of flow (function of flow and slope)
mean water width
mean water depth
mean water slope
form and shape of main river bed
river discharge (flow) category
valley shape
transport of solids
acid neutralising capacity
mean substratum composition
chloride
air temperature range
mean air temperature
precipitation

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Source: https://www.legislation.gov.uk/eudr/2000/60/annex/II/division/1/division/1.2/division/1.2.1 (the official version)
Page: https://openlegislation.uk/eu-directive-2000-60/annex-II/division-1/division-1.2/division-1.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.