Water management (SDG 6)

Győr and its surroundings boast many rivers, streams and lakes, and experiences intense flooding almost every year. The main goal of Nagy-Pándzsa project was to reduce the risk of flood and to regenerate the Nature 2000 area (Reference 7). Due to the reconstruction of the water transporting feature and the reconstruction of the flood-gate, the flood protection could improve and the pollution of waters could decrease. Therefore, the conditions of flora and fauna of waters improved and the size of the utilizable area increased (Reference 8).

Situated in park Spilberk, the garden features a building with a green roof and a garden with various plots. The building is designed to be carbon neutral and reuses rainwater for toilet flushing and for watering the garden plots. The garden is used for horticultural purposes and environmental education, as well as animal and beekeeping. The complex improves the local micro-climate through cooling and humidification and promotes biodiversity. (Ref. 1; Ref. 2; Ref. 5; Ref. 6)

The Sowe Valley Project was a community-based project focusing on rivers restoration. It aimed to link the local community with the Sowe River Valley and to improve the valley’s biodiversity and habitats for the benefits of people and wildlife. (Ref. 2, 6, 11-13)

The renewal of the 220 sqm roof terrace of the Ministry of the Environment in 2010 focused on improving the thermal insulation of the building and the remaking of its green roof. The project was planned by the city council’s department for urban nature in collaboration with a landscape architect and implemented by a professional outdoor greening company (Ref. 2). The green roof won the award “green roof of the year 2013” and is also actively promoted as a model for green roofs, frequently shown to international guests of the Ministry. (Ref. 1).

This project worked to revitalize the area along the river Old Ponávka. This involves the creation of walking paths, bike paths, and public playgrounds. (Ref. 1). Stará Ponávka and the adjoining Svitavy drive were built in the 13th century in the original riverbeds of Ponávka and Svitava before their regulation. By revitalizing this watercourse, the city returned water back to the city, made it accessible to people and improved the natural state of the site (Ref. 14).

The Bio Washing Machine is a combination of an Aquifer Thermal Heat Storage (ATES) system and biological natural attenuation of groundwater and is thereby mainly focused on groundwater decontamination and energy storage. The ATES system accelerates the biological degradation of groundwater contamination and provides sustainable energy because cold water is pumped through buildings during the summer to cool the buildings and hot water during winter for heating. The groundwater decontamination measurements are aimed at protecting water in order to provide safe drinking water (ref. 1, 2, 3)

The Bradford Beck project is a pilot project looking at new ways of managing and improving rivers. The Bradford Beck is a small river system of around 11km that flows through the City of Bradford. The beck used to be known as the filthiest river in England. In this project, activities are aimed at bringing the becks back to life and full health, for long term restoration of the Beck. It will provide a new focus of water-based socio-economic regeneration in Bradford (reference 1). The project established that a large proportion of the Bradford Beck catchment could be monitored with observations at just 12 strategic points along the course of the Beck, so observations would be made at all 12 points on different days of the week and at different times of the day (ref 6). A record of the status of the Beck at each point would be taken. This would include the level of the water, the colour of the water, smell, turbidity and a photograph of each site (ref 6).

The redevelopment of the Alcantara square is part of the program A SQUARE IN EACH NEIGHBOURHOOD, implemented by the Municipality of Lisbon in 2017 onward. Besides the road re-organization, the project includes specific elements. The NBS includes the creation of a public garden, cycling path, playground facilities and introduction of new trees (Ref.1). The residents of the neighbourhood were asked to participate. The participation process aimed at obtaining from the citizens an evaluation on different pertinent questions in the experience of the public space, results showed: space for pedestrians, improve green spaces and urban living (Ref.1).

The surface water system in the VINEX location Leidsche Rijn near Utrecht is a special water system. Nowhere in the Netherlands is the surface water of such a large urban area treated in such a sustainable and climate-proof manner (ref. 2). In Leidsche Rijn, a relatively new city district of Utrecht, a sustainable closed circuit water system was introduced including natural wetlands, bioswales, pumping stations and permeable paving which filters stormwater organically. It is viewed as a more sustainable solution compared to traditional stormwater infrastructure because it benefits biodiversity (e.g. by means of fish passages) and prevents the need for storm water facilities and the influx of unfiltered surface water from elsewhere (ref. 1-3).

The Water of Leith is home to a wide diversity of plants and animals. The river performs an important flood control function in the city. A management plan envisions to create a healthy river that flows through a green corridor from the hills to the sea and is a haven for wildlife, is enjoyed and managed by the public, and is valued for its built and cultural heritage. The current intervention is about an extensive Flood Prevention Scheme. Walls and other flood defence measures have been constructed from Murrayfield downstream to Bonnington. A re-modelling exercise is being carried out to include the impact of climate change on the river system and the efficacy of the flood prevention scheme. The Water of Leith Conservation Trust works to conserve and enhance the river, its heritage and wildlife. It also promotes education and recreation and works with volunteers and community groups (ref 1, 2, 3).