SmartWater – Digital Solutions for Climate-Resilient Cities

In recent years, international climate negotiations have highlighted the challenges in achieving climate targets, especially maintaining the 1.5-degree limit. Despite significant efforts from many nations, progress has stalled. At the same time, the tangible effects of climate change are becoming increasingly evident, particularly in urban areas where growing urbanisation amplifies the impact. In response, more cities and municipalities are developing climate adaptation strategies. These measures aim to strengthen the resilience of urban structures—enhancing their capacity to withstand the impacts of climate change—while simultaneously improving the quality of life for urban residents.

One key area of focus is water management, which faces two primary challenges: flooding and water pollution from heavy rainfall, as well as heat waves and drought caused by diminishing rainfall. A crucial strategy to tackle these issues is the local use of rainwater. But how does this work in practice?

A significant approach lies in developing and maintaining green and blue infrastructure. This includes features like green roofs and facades (green), small water bodies (blue), and infiltration basins[p1] (blue-green). These measures serve two essential purposes:

• During rainfall, they allow water to infiltrate the ground, reducing surface runoff on streets and easing the burden on sewer systems. At the same time, groundwater is replenished, and stored water in the soil benefits urban vegetation.  
• In periods of summer heat, these features act as temporary water reservoirs. Water evaporation helps cool the air, lowering temperatures in surrounding neighbourhoods. Additionally, plants provide shade for roofs and walls, protecting buildings from overheating and keeping indoor spaces cooler.

In addition to these practical ecosystem services, green and blue infrastructures markedly enhance the aesthetic appeal of urban areas. Green spaces, trees, and water features bolster residents' well-being and offer areas for relaxation and recreation.

The SmartWater pilot project specifically targets these forms of blue-green infrastructure. With backing from the Federal Ministry for Housing, Urban Development and Building (BMWSB), Berlin has secured funding to tackle water-related climate adaptation challenges using innovative digital tools.

The SmartWater project is being trialled in pilot areas within the districts of Pankow and Friedrichshain-Kreuzberg. Its aim is to explore the potential of blue-green measures in these neighbourhoods. Through interactive prototypes, you can discover more about the development of three digital tools and gain a deeper understanding of the project's background.