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Extreme weather layer method for implementation of nature-based solutions for climate adaptation: Case study Słupsk
Karolina Fitobór1, Rafał Ulańczyk2, Katarzyna Kołecka1
1Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland.
The Science of the Total Environment
|June 20, 2022
Summary
Cities face increasing stormwater flood risks due to climate change and urban densification. The Extreme Weather Layer (EWL) tool analyzes development impacts on drainage systems, guiding nature-based solutions (NBS) for urban climate adaptation.
Area of Science:
- Environmental Science
- Urban Planning
- Climate Change Adaptation
Background:
- Climate change intensifies extreme weather events, increasing stormwater risks globally.
- Urban densification leads to more impervious surfaces, overwhelming existing drainage systems.
- Current planning practices fail to account for cumulative impacts of development on flood vulnerability.
Purpose of the Study:
- To introduce a holistic and dynamic planning method, the Extreme Weather Layer (EWL).
- To enable analysis of individual development impacts on urban drainage and catchment-wide flood risk.
- To support the implementation of nature-based solutions (NBS) for effective stormwater management.
Main Methods:
- Integration of a drainage modelling engine with a Geographic Information System (GIS).
- Utilizing spatial data and widely accepted modelling principles.
- Developing the Extreme Weather Layer (EWL) for impact assessment.
Main Results:
- The EWL can dynamically assess the effect of specific urban developments on drainage performance.
- It quantifies the impact on the entire catchment's flooding risk.
- Identifies the need and optimal locations for green infrastructure interventions.
Conclusions:
- The EWL is a smart tool for urban stormwater management and climate adaptation.
- It facilitates the transition from grey to green infrastructure.
- It guides strategic NBS implementation to mitigate flood risks effectively.
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