Water management (SDG 6)

“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).

The Brackwede open-air pools have been a significant landmark of the city of Bielefeld and part of locals' life since 1926. After several renovations since its opening, in 2005, the maintaining company of the Brackwede open-air pools proposed to convert the pools into natural-water bodies through the application of natural water filtration systems. The pools are supplied from the natural underground stream of Ems-Lutter whose spring water is physically and biologically purified by natural mineral soil filter and water plants. Chlorine is prohibited in this pool - the nature itself ensures water quality (1). Since 2009, the Natural pool of Brackwede offers natural facilities for swimming and other water-related activities besides cultural, sport and recreational opportunities for all (1).

The lagoon has a great local significance for its biodiversity with the presence of certain species of rare birds regularly stationed in this area. Much of the biotope was degraded in the last decade by systematic embankments, constructions, as well as the inconvenience caused by various man-made pressures. A project was developed to reconstruct the area within the framework of a collaboration of the Institute of Marine Biological Resources, Inland Waters of HCMR, and Hellenic Ornology Company. The project offers directions for completing a protected region and proposes specific projects and actions of scientific monitoring, ecological rehabilitation, regeneration, and promotion. (Ref 3)

The project aims to create a floating swimming pool on the Odra river, similar to a floating pool in Berlin. The pool would serve as a meeting place and the recreational area, but also as an impressive architectural and floating artwork. The pool would consist of three modules: a relaxation zone; filter module, composed of suitable plants responsible for clearing water straight from the river; and the pool/swimming area, filled with filtered water from the river. The pool should be mobile - made in such a way that by conventional means it could move within the urban waterfront [1].

“Frederiksgade gets new and climate-friendly life. Aarhus will be the European City of Culture in 2017, by which time Frederiksgade, running between the river and City Hall, will become an attractive street enhanced by water and greenery in the city centre. The makeover has been possible by innovative, focused collaboration between municipal departments, businesses with widely differing expertise and the owners and tenants of the street itself.” (Ref. 1, 12)

A significant expansion of the summer water level in the biggest local natural river, Giber River, was carried out in Aarhus. The increase in water flow in Giber River was achieved by a range of different measures, such as pumping purified wastewater into the river and building a string of rainwater collection ponds that will be allowed to slowly drain into the river. (Ref. 1)

The Agenda working group called "Natural gardens in Wachtberg" aims at the development and promotion of nature-based construction solutions and increased use of local wild plants since 1998. In this pursuit, it managed to acquire land (400 sqm) from the municipality of Berkum and, transform the lawn area into a near-natural garden showcasing nature-based gardening elements with the help of other environmental associations and sponsors (1,2,7). Apart from securing and enhancing local biodiversity, the garden serves as a display of possible elements and solutions of a nature-based garden for interested parties. Moreover, through information boards, workshops and a detailed brochure on implementation guidelines, the project can spark interest and empower local residents to implement such nature-based elements in their own garden (1, 3, 4,7).

“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 botanical garden of Athens was reconstructed in 2004 to protect and maintain the biodiversity of the area. Covering a land of 1,860 sq.m., this Botanical Garden hosts over 2,500 different kinds of plants from all over the world and a rich variety of flora. All the plants and trees are protected in the park. The community also sends seeds all over the country to spread and maintain biodiversity throughout the region and hold agroecological events to increase the concern and educate the locals (Ref 1,3). The park also has a lake and a library inside it. (Ref 2)