Re-meandering

Code: 
N04
Sector: 
Hydro Morphology
The complete description of the NWRM: 
Summary: 

A river meander is a U-form taken by the river, allowing it to decrease water velocity. In the past, rivers have been straightened by cutting off meanders. Many rivers in northern and Western Europe have been straightened and channelized to, for example, facilitate log floating and/or speed up the drainage of water and control/limit the river bed movements. Channelizing was also a way to gain land for cultivation. River re-meandering consists in creating a new meandering course or reconnecting cut-off meanders, therefore slowing down the river flow. The new form of the river channel creates new flow conditions and very often also has a positive impact on sedimentation and biodiversity. The newly created or reconnected meanders also provide habitats for a wide range of aquatic and land species of plants and animals.

Illustration(s): 

River before re-meandering

River after re-meandering

Source: http://riverwatch.eu/en/the-morava-anniversary-project-2014

Possible benefits with level: 
Benefits Levelsort descending
PO1 - Improving status of biology quality elements High
PO2 - Improving status of physico-chemical quality elements High
PO3 - Improving status of hydromorphology quality elements High
PO7 - Prevent surface water status deterioration High
PO9 - Take adequate and co-ordinated measures to reduce flood risks High
PO10 - Protection of important habitats High
PO11 - Better protection for ecosystems and more use of Green Infrastructure High
PO12 - More sustainable agriculture and forestry High
PO13 - Better management of fish stocks High
PO14 - Prevention of biodiversity loss High
ES3 - Natural biomass production High
ES4 - Biodiversity preservation High
ES6 - Groundwater/aquifer recharge High
ES7 - Flood risk reduction High
ES8 - Erosion/sediment control High
ES10 - Recreational opportunities High
ES11 - Aesthetic/cultural value High
BP4 - Slow river water High
BP9 - Intercept pollution pathways High
BP10 - Reduce erosion and/or sediment delivery High
BP12 - Create aquatic habitat High
BP13 - Create riparian habitat High
BP17 - Absorb and/or retain CO2 Low
BP5 - Increase evapotranspiration Low
BP8 - Reduce pollutant sources Low
PO4 - Improving chemical status and priority substances Medium
PO5 - Improving quantitative status Medium
PO6 - Improving chemical status Medium
PO8 - Prevent groundwater status deterioration Medium
ES2 - Fish stocks and recruiting Medium
ES5 - Climate change adaptation and mitigation Medium
ES9 - Filtration of pollutants Medium
BP3 - Store river water Medium
BP6 - Increase infiltration and/or groundwater recharge Medium
BP7 - Increase soil water retention Medium
BP14 - Create terrestrial habitats Medium
BP16 - Reduce peak temperature Medium
ES1 - Water storage Medium
BP1 - Store runoff Medium
BP2 - Slow runoff Medium
BP11 - Improve soils Medium
Last updated: 08 Jun 2015 | Top