Strengthened capacity to address climate hazards/natural disasters

“Cooperation between, residents, businesses and the local authority to facilitate the adaptation of a large urban area in Aarhus for more rainfall in the future. They will be able to influence urban development in the direction of more attractive use of rainwater. Local Rainwater Drainage (LRD) is a current trend derived from the political desire to deal with some of the expected increase in extreme rainfall by collecting and using it for recreational purposes. Society will thus be able to adapt to climate change better whilst providing more recreational facilities and environmental improvements.” (Ref. 1)

Collaboration between the City of Aarhus and private property developer DOMIS Ejendomme has been recognised by the award of a silver certificate for sustainable urban planning for the Bryggervej project. The aim of the project is to try out various sustainability principles. Green and blue solutions are included in the project, e.g. green roofs, green facades, green open spaces and blue elements/water in the park areas to increase recreational values and add moisture to the dry urban air. (Ref. 1, 2, 3)
By 2020, the first residential project was built called Risskov Brynet (Ref 8). Information in the project since 2017 is about this project. The project is certified according to DGNB Gold because it is based on a high standard for both social, economic, and environmental sustainability. An important part of this project is a 'highly insulated climate screen', a technology of the project that is incorporated into the project to address climate change (Ref 8, 9, 10).

“An integrated solution for groundwater, rainwater, waste water, streams and ponds creates attractive housing in a new suburb (NyE), with room for exciting architecture. The water cycle plays a key role in urban development in Denmark, and water is one of the ever-present elements in our lives. Århus needs to prevent flooding caused by climate change, avoid polluting our groundwater, and improve the environment in streams and ponds to allow the use of water to create recreational value for the residents. This way, Århus can build a balanced aquatic environment, which will ultimately create a better city.” (Ref. 1)

The establishment of the first stage consisting of 650 homes, day care center and grocery store was initiated in the autumn of 2016 after more than 10 years of planning, and in the summer of 2018, the first residents moved into Nye. More homes are on the way. (Ref 14). In its current form of just over 150 ha, it has a capacity of approx. 15,000-20,000 inhabitants or approx. 10,000 homes at full expansion (Ref 15)

The project was about restoration of the Aarhus river. The river was piped during the 1930s for hygienic reasons and to give space for road infrastructure. In 1989, the city decided to resurface the river. The river acts as a green and blue corridor running through the city centre. Furthermore, The City Council approved a plan for the recreational vision of the Aarhus River and e.g. flood prevention measures have been taken. (Ref. 1, 2, 3) The Aarhus Å project was completed in the years from 2006 to 2013. (Ref. 15)

The 18 km long Rheindorfer stream flowing into the Rhine has faced increased urbanization, industrial activity and surface sealing over the last decades of the 20th century. As a result, numerous interventions were made to its original structure, such as the creation of a concrete bed for the stream and the straightening of the stream course. Meanwhile, an increasing amount of pressure was put on its water carrying capacity. In order to improve the flood retention capacity of the stream, the renaturalization project of the stream was executed in some parts of the water body. The project aims were 1) to restore the natural course of the stream and the state of the riverbeds, thus enhancing the stream's capacity to buffer floods, 2) restore the natural biodiversity of the floodplain and 3) to create a recreational area for locals (1,2).

This NBS involved the reconstruction of two of the total of four lakes/ponds at the Iron Fountain (Železná studnička) and was one of the project sites undertaken by the Bratislava Zelenaj project. (7, 8, 10) The location served as a recreational and relaxing spot for locals and tourists. To undertake the reconstruction, the two lakes/ponds no. 3 and no. 4 had to be discharged. Upon doing so many species of fish were found, including carp, caras, catfish, rabbitfish, toothpick, lure or amur, and also bivalve molluscs and troughs. Reconstruction of water reservoirs (ponds) no. 3 and no. 4 were implemented by the City of Bratislava within the framework of the project in cooperation with the Monumental Office of the Slovak Republic and the Municipal Forests company. (9, 11, 20)

Approximately one-fifth of the rain that falls in Malmö's urban area is led to Risebergabäcken, which makes it by far Malmö's largest watercourse. None of the other watercourses receives more than a very small part of the municipality's stormwater. The flow in Risebergabäcken is in many places it is narrow and deep, which means that the water rises quickly when there is a lot of rain (ref. 7). Large precipitation and asphalt industrial environment in Skogholm's meadows (Skogholms ängar) have long been a problem of overload in Risebergabäcken, but the ecological stormwater system delays and cleans the water, as well as preventing erosion and floods (ref. 1).

The city of Malmö works for a sustainable urban environment, e.g. through planning the city's new construction, working on existing buildings and at the same time striving to reduce the environmental impact. Västra Hamnen (Western harbour) is a new and ultra-modern district in Malmö. It is located on a former shipyard area right beside the sea, only less than a kilometer north-west of the medieval old town of Malmö (ref. 10). In the Western Harbour where land was available after the shipyard’s closure, high sustainability has been sought from the beginning. In dialogue with builders and other actors, Malmö City has developed guidelines for energy use, green structure, waste solutions and a healthy indoor environment. (Ref. 1)

"The HUERTAS LIFE KM0 project aims to recover the natural peri-urban Gardens of Zaragoza through the promotion of a ‘zero kilometre’ (km0) concept of local agricultural production. It expects to demonstrate a successful approach for implementing the European Territorial Strategy (ETS), delivering economic, social, health and environmental benefits. " (ref 4) in peri-urban green areas that have been neglected (Ref. 4).

"After decades of abandonment and deterioration, Zaragoza took advantage of the opportunity of the Expo 2008, to form a new relationship with the Ebro River, transforming empty, inaccessible, degraded and unsafe banks into places of encounter and representation. Public works on the Ebro were designed as structures with various functions." (Ref.3)