Difference between revisions of "River Typology in The Netherlands"

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==References==
 
==References==
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<references>
 
[[Media:References_metrics_fish_NL.pdf |References and metrics for fish in rivers in The Netherlands, by Buise and Beers (2009)  ]]<br>
 
[[Media:References_metrics_fish_NL.pdf |References and metrics for fish in rivers in The Netherlands, by Buise and Beers (2009)  ]]<br>

Revision as of 12:09, 30 March 2010

River typology in The Netherlands

General description

In the Netherlands, 18 river types have been defined (van der Molen and Pot, 2007)[1].


from these, 11 have been found to present significantly different ecological conditions for individual fish species (Buijse and Beers 2009).

Classification system

Type Name Slope (m/km) Flow velocity (cm/s) Geology (>50%) Width (m) Catchment (km2)
R4 Permanent slow-flowing headwater on sandy soil <1 <50 Silicious 0-3 0-10
R5 Slow-flowing middle/lower course on sandy soil <1 <50 Silicious 8-25 100-200
R6 Slow-flowing rivulet on sandy/clay soil <1 <50 Silicious 8-25 100-200
R7 Slow-flowing river on sandy/clay soil <1 <50 Silicious >25 >200
R8 Freshwater tidal river on sandy/clay soil <1 <50 Silicious >25 >200
R10 Slow-flowing middle/lower course on calcareous soil <1 <50 Calcareous 3-8 10-100
R12 Slow-flowing middle/lower course on peaty soil <1 <50 Organic 3-8 10-100
R14 Fast-flowing middle/lower course on sandy soil >1 >50 Silicious 3-8 10-100
R15 Fast-flowing rivulet on siliceous soil >1 >50 Silicious 8-25 100-200
R16 Fast-flowing middle/lower course on sandy or gravel soil >1 >50 Silicious >25 >200
R18 Fast-flowing middle/lower course on calcareous soil >1 >50 Calcareous 3-8 10-100

References

  1. van der Molen, D.T. and Pot. R [eds.] 2007. Referentie en maatlatten voor natuurlijke watertypen voor de Kaderrichtlijn Water. STOWA rapport 2007-32, 361 pp. (original document in Dutch)