Removal of dams and other longitudinal barriers

Code: 
N09
Sector: 
Hydro Morphology
The complete description of the NWRM: 
PDF icon n9_-_removal_of_dams_and_other_longitudinal_barriers.pdf
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: 
Benefitssort descending 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 study(ies): 
in-depth light
Last updated: 09 Jun 2015 | Top