1. Data collection and investigation: According to the rainstorm risk indicator, the city will investigate, identify and rank the threat levels of different regions, stimulate investment, influence the value of land parcels, and influence the impact of strategy implementation on adjacent land development.

2. Establishing models and mapping: Each administrative division divides its fields into different stormwater catchments, and identifies vulnerable by establishing large hydrological models including geographic information systems, surface water, sewage systems, landforms, and risk assessments. area.

3. The cost of no measures: The impact of climate change is astounding. After analysis and calculation by the government and professional consultants, even if no measures are taken, the annual cost will be as high as 6 in 2110. 90 million dollars.

4. Design and Qualification: Key areas will be identified, transforming strategic planning into a human-scale spatial experience and providing examples for other cities to mitigate torrential rains and respond to daily rainfall. The "Rainstorm Toolbox" will also become a versatile design tactical library with universality and flexibility.

5. Participation and interaction: Heavy rain will affect every corner of Copenhagen. A comprehensive strategy designed for public participation has emerged, so that every ordinary citizen who may be affected can also make suggestions.

6. Rainstorm economy: The combination of a high-ratio blue-green strategy and a low-proportion municipal pipeline retrofit will save nearly 50% of the cost compared to traditional planning. The subsequent increase in the quality of residents' health, environment and urban space will further enhance their economic effects.