Code
N09
Sector
Hydro Morphology
The complete description of the NWRM
Summary

Dams and other transversal barriers are obstacles crossing the river section and causing discontinuities for sediment and fauna. Removing them consists in destroying all the obstacles, restoring the slope and the longitudinal profile of the river, therefore allowing re-establishment of fluvial dynamics, as well as sedimentary and ecological continuity.

Illustration(s)

Dam being removed for restoration of reference condition hydromorphology

Source: Ignacio Rodrigez’s presentation, NWRM Workshop 1

 

Possible benefits with level
Benefits Level
BP8 - Reduce pollutant sources
Low
BP10 - Reduce erosion and/or sediment delivery
Medium
BP12 - Create aquatic habitat
High
ES2 - Fish stocks and recruiting
High
ES4 - Biodiversity preservation
High
ES7 - Flood risk reduction
Low
ES8 - Erosion/sediment control
Medium
ES12 - Navigation
Medium
ES14 - Energy production
Medium
PO1 - Improving status of biology quality elements
High
PO2 - Improving status of physico-chemical quality elements
Low
PO3 - Improving status of hydromorphology quality elements
High
PO7 - Prevent surface water status deterioration
Low
PO9 - Take adequate and co-ordinated measures to reduce flood risks
Low
PO10 - Protection of important habitats
High
PO11 - Better protection for ecosystems and more use of Green Infrastructure
High
PO13 - Better management of fish stocks
High
PO14 - Prevention of biodiversity loss
High

Case studies per NWRM