River Typology in The Netherlands
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River typology in The Netherlands
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.
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)
