Difference between revisions of "River Typology in The Netherlands"

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==General description==
 
==General description==
In the Netherlands, 18 river types have been defined. When analysing the inter relationship between river types and ecological conditions for individual fish species, it has been found that the 11 river types in the table below present significant differences.     
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In the Netherlands, 18 river types have been defined, from these, 11 have been found to present significantly different ecological conditions for individual fish species (Buijse and Beers 2009).     
 
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==Classification system==
 
==Classification system==

Revision as of 11:52, 30 March 2010

River typology in The Netherlands

General description

In the Netherlands, 18 river types have been defined, 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

References and metrics for fish in rivers in The Netherlands, by Buise and Beers (2009)