Integration of Nature-Based Solutions into Flood Defence for Sungai Damansara using Info Works Integrated Catchment Modelling
InfoWorks統合流域モデリングを用いたSungai Damansara洪水防御への自然ベースソリューションの統合 (AI 翻訳)
Azri Arif Mazlan, Sharifah Abdullah, Nurul Fariha Lokman
🤖 gxceed AI 要約
日本語
マレーシアのSungai Damansara流域で、従来の堤防や貯水池に代わる自然ベースソリューション（NBS）の洪水抑制効果を、InfoWorks ICMを使った1D-2D氾濫モデルで評価。200年確率降雨に対し、NBSは水位を12%、ピーク流量を78%低減し、従来対策を上回る結果を示した。NBSが生態系強化と洪水リスク管理を両立する可能性を実証。
English
This study evaluates Nature-Based Solutions (NBS) for flood mitigation in the Sungai Damansara catchment, Malaysia, using a 1D-2D hydrodynamic model in InfoWorks ICM. For a 200-year storm, NBS reduced water levels by 12% and peak flow by 78%, outperforming conventional flood walls and pond modifications. The findings highlight NBS as a cost-effective and ecologically beneficial complement to traditional hard infrastructure.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でも都市化に伴う洪水リスクが高まっており、NBSの定量評価手法は参考になる。ただし本論文はマレーシア事例であり、日本の河川制度や気候との整合性は別途検討が必要。
In the global GX context
As global urban areas face increasing flood risks from climate change, this empirical modeling study provides evidence that Nature-Based Solutions can significantly outperform conventional engineering. It supports the integration of NBS into climate adaptation frameworks under the Sendai Framework and the Paris Agreement.
👥 読者別の含意
🔬研究者:Demonstrates a coupled 1D-2D modeling workflow for NBS assessment that can be replicated in other catchments.
🏢実務担当者:Offers quantitative performance metrics for NBS vs. gray infrastructure, useful for project planning and cost-benefit analysis.
🏛政策担当者:Provides evidence that NBS can be a viable component of national flood risk management strategies, supporting green infrastructure policies.
📄 Abstract（原文）
In Malaysia, intense floods such as flash floods are characterized by rapidly rising water levels and sudden onset, often overwhelming flood defences and evacuation routes. The Sungai Damansara catchment in Selangor has experienced frequent and severe flooding despite conventional structural mitigation measures, including flood walls and detention ponds. Rapid urbanization in the region has reduced natural infiltration, increasing peak runoff and surface discharge. This study explores the use of Nature-Based Solutions (NBS), specifically Floodplain and Riparian Zone Restoration (Flood Resilient Redevelopment), to mitigate flooding. Critical factors such as water level and flow rate were assessed for their influence on flood severity and associated risks. A coupled 1D–2D hydrodynamic model was developed using InfoWorks Integrated Catchment Modelling (ICM) software to simulate flood behaviour under existing conditions and scenarios enhanced with NBS, flood walls, and pond modifications. Design storms with a 200year Annual Recurrence Interval (ARI) were used to evaluate extreme flood impacts. Simulation results indicated that NBS reduced water levels by up to 12% and peak flow by up to 78% for a 200-year ARI event compared to existing conditions. In contrast, flood walls had minimal hydrologic impact, while pond modifications reduced water levels by only 4% and peak flow by 10%. These findings demonstrate that NBS can outperform conventional measures in flood attenuation while enhancing ecological resilience. The study highlights the potential of NBS to complement or even replace traditional hard infrastructure, supporting integrated and sustainable flood risk management strategies in rapidly urbanizing catchments.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.17576/jkukm-2026-38(3)-23first seen 2026-06-17 05:32:13 · last seen 2026-06-17 07:13:48
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