Reduce flood risk

Monitoring the success of Liberty Island, Hungary

Liberty Island in the Danube River, Hungary

The creation of a long-term, sustainable conservation model for white willow (Salicion albae) alluvial forests in Hungary and a more near-natural flow regime of the Danube. A core aim was to eliminate or mitigate the factors that threaten the habitats of community interest.

This case study is one of 17 that are part of the EU Horizon2020 project MERLIN - Mainstreaming Ecological Restoration of freshwater-related ecosystems in a Landscape context: INnovation, upscaling and transformation. Within MERLIN, the project area of the Liberty Island restoration is revisited to learn from...

Nature-based solutions in Wroclaw: Renovated courtyards and green streets

To demonstrate the potential for nature-based solutions to reduce heat stress and flooding and provide other co-benefits
To engage citizens in designing nature-based solutions that meet their needs.
To develop an effective strategy for nature-based solutions to contribute to climate change adaptation across the city.

Restoring Danube floodplains in Romania

Former wetlands adjacent to the river are being reconnected to demonstrate the benefits of re-wetting /reconnection to the natural flood pulse of the Danube River in order to enhance the benefits provided to nature and local communities.

Restoring Danube floodplains in Austria

Danube estuary Tiergartenarm (Austria) (photo viadonau)

Riverbank restorations are implemented on a stretch of approximately 800m shoreline of the Danube to increase lateral river-floodplain connectivity and the functioning of the floodplain as an ecosystem. The aim is to reach a good ecological status of the river as well as good navigation status. The case study works with an adaptive management process and adresses multiple pressures (ecological deficits, security of navigation, riverbed deepening, flood protection).

This case study is one of 17 that are part of the EU Horizon2020 project MERLIN - Mainstreaming Ecological Restoration...

Peatlands of Bosnia and Herzegovina: Neretva-Trebisnjica and Hutovo Blato

Peatland sites within carstic catchments in Bosnia and Herzigovina are to be restored through channel restoration and rewetting, thereby protecting these hotspots for (endemic) biodiversity. The case study aims at achieving an amicable transition from the current heavy hydropower usage and peatland extraction to more near-natural, healthy ecosystems.

Climate change adaption and the river Seest Mølleå

The center of the city Kolding is frequently under threat from flooding due to heavy or prolonged precipitation events. Located at the bottom of a river valley, the municipality has initiated many climate-proofing projects to mitigate flood risks. One such project, initiated by Kolding municipality and the utility company Bluekolding, concerns the river Seest Mølleå. The nature-based climate adaptation project cost a total of 3,5 mio. DKK, and was inaugurated in November 2021 after 5 months of construction.

When heavy prescriptions occur in the large catchment area outside the city...

The Finnish River Management Association Virho

The Finnish River Management Association Virho (Virtavesien hoitohidstys Virho ry), was nominated for the Nordic Council Environment Prize 2022 with the theme of nature-based solutions. The Finnish River Management Association has the goal to revive and secure the living conditions of the entire water ecosystem in Finland. This includes fostering biodiversity and fish stocks in areas of flowing water. Virho has operated for more than 30 years restoring hundreds of kilometers of streams through building fish roads, rehabilitating streams and rapids, and deconstructing dams.

One such...

Room for the Rhine branches

flooded Rhine branches in the Netherlands

The aim of this case study is the creation of ecological flood retention by changing land use, reconnecting floodplains and change of sluice management in summer dikes. Floodplains are reconnected and side channels restored or their creation supported, with longitudinal main channel dams benefitting both shipping and nature.

Kristianstads Vattenrike - Sweden’s oldest UNESCO biosphere reserve

In 2005, the UN agency UNESCO approved Kristianstads Vattenriket as a biosphere reserve covering 100 000 ha, and one of 700 in the world. This means Kristianstads Vattenrike is an internationally recognized model for sustainable development. The Vattenrike encompasses two thirds of the municipality of Kristianstad, with the goal to “preserve, develop and support the landscape's values”.

Nature-based solutions have been key for protection against droughts, floods, and preservation of the area, as well as nutrient leakage into the Baltic Sea.

The areas in Vattenriket include...

Votlendissjóður - The Icelandic Wetland Fund

Votlendissjóður was established in 2018 with the goal to restore and reclaim wetlands in Iceland through cooperation with landowners, municipalities, the Icelandic state, companies, NGO’s and farmers. The fund provides finances, and in some instances equipment and personnel, to parties interested in restoring wetlands not used for cultivation or forestry. Alternatively, the Votlendissjóður themselves can foster wetlands and carry out restorations through approved methods and professionals. Volunteers monitor the effects of the wetland on birds, plants and other wildlife in the area. ...