# Commission Decision (EU) 2018/229 of 12 February 2018 establishing, pursuant to Directive 2000/60/EC of the European Parliament and of the Council, the values of the Member State monitoring system classifications as a result of the intercalibration exercise and repealing Commission Decision 2013/480/EU (notified under document C(2018) 696) (Text with EEA relevance), Division: Water category Rivers Geographical Intercalibration Group Northern rivers

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

Description of types that have been intercalibrated
Type
River characterisation
Catchment areaof stretch (km2)
Altitude and geomorphology
Alkalinity(meq/l)
Organic material(mg Pt/l)
R-N1
Small lowland siliceous moderate alkalinity
10 — 100
< 200 m a.s.l. or below the highest coastline
0,2 — 1
< 30
(< 150 in Ireland)
R-N3
Small/medium lowland organic low alkalinity
10 — 1 000
< 0,2
> 30
R-N4
Medium lowland siliceous moderate alkalinity
100 — 1 000
0,2 — 1
< 30
R-N5
Small mid-altitude siliceous low alkalinity
10 — 100
Between lowland and highland
< 0,2
< 30
R-N9
Small/medium mid-altitude siliceous low alkalinity organic (humic)
10 — 1 000
Between lowland and highland
< 0,2
> 30
Countries sharing types that have been intercalibrated:
R-N1: Finland, Ireland, Norway, Sweden, United Kingdom
R-N3: Finland, Ireland, Norway, Sweden, United Kingdom
R-N4: Finland, Norway, Sweden, United Kingdom
R-N5: Finland, Norway, Sweden, United Kingdom
R-N9: Finland, Norway, Sweden

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Source: https://www.legislation.gov.uk/eudn/2018/229/annex/division/1/division/5 (the official version)
Page: https://openlegislation.uk/eu-decision-2018-229/annex/division-1/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.