Nasrollahi et al. (2025) Modeling the Effectiveness of Alternative Flood Adaptation Strategies Subject to Future Compound Climate Risks

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Land
• Year: 2025
• Date: 2025-09-08
• Authors: Fatemeh Sadat Fatemi Nasrollahi, Philip Orton, Franco Montalto
• DOI: 10.3390/land14091832

Research Groups

The provided text does not explicitly list the main research groups, labs, or departments involved in the study.

Short Summary

This paper comprehensively investigates the effectiveness of resistance (levee), nature-based (green stormwater infrastructure), and managed retreat (land swap) flood risk management strategies in Eastwick, Philadelphia, under compound climate change conditions. The study found significant differences in the predicted flood extents, depths, and durations among the options, concluding that an integrated approach is likely required for optimal flood risk reduction.

Objective

• To comprehensively investigate the effectiveness of alternative flood risk management options (resistance, nature-based, and managed retreat strategies) in reducing flood risks under different climate conditions.
• Principal hypothesis: Green stormwater infrastructure (GSI) and managed retreat approaches would be superior to a levee due to their intrinsic ability to address compound fluvial, pluvial, and coastal flood hazards.

Study Configuration

• Spatial Scale: Eastwick, Philadelphia, PA, a community subject to fluvial, pluvial, and coastal flood hazards; watershed-scale for green stormwater infrastructure.
• Temporal Scale: Current and future climate scenarios, with spatiotemporal patterns of precipitation and Delaware River tidal conditions based on Tropical Storm Isaias (2020).

Methodology and Data

• Models used: Integrated 1D-2D PCSWMM model.
• Data sources: Spatiotemporal patterns of precipitation and Delaware River tidal conditions derived from Tropical Storm Isaias (2020) for current and future climate scenarios.

Main Results

• The study demonstrated significant differences in the predicted flood extents, depths (in meters), and duration of flooding (in hours) among the levee, watershed-scale green stormwater infrastructure (GSI) program, and land swap options.
• These differences were observed under both current and future climate scenarios.
• The findings suggest that while individual strategies have varying effectiveness, an ideal remedy for flooding in Eastwick is more likely to require an integrated approach, considering cost-effectiveness, stakeholder preferences, and logistical factors.

Contributions

• Provides a comprehensive investigation into the effectiveness of three distinct flood risk reduction strategies (resistance, nature-based, managed retreat) under compound climate change conditions.
• Offers transferable insights into the limitations and opportunities of different flood risk reduction strategies for other communities facing similar compound hazards.
• Highlights the urgent public need for local solutions while advocating for the integration of multiple strategies into multifunctional flood risk management.

Funding

The provided text does not mention any specific projects, programs, or reference codes that funded this research.

Citation

@article{Nasrollahi2025Modeling,
  author = {Nasrollahi, Fatemeh Sadat Fatemi and Orton, Philip and Montalto, Franco},
  title = {Modeling the Effectiveness of Alternative Flood Adaptation Strategies Subject to Future Compound Climate Risks},
  journal = {Land},
  year = {2025},
  doi = {10.3390/land14091832},
  url = {https://doi.org/10.3390/land14091832}
}