Hybrid Infrastructure for Urban Flood Risk and Climate-Related Hazard Management in Sekondi-Takoradi, Ghana

The report evaluates a hybrid infrastructure approach for flood risk management in Sekondi-Takoradi, Ghana, comparing it to a business-as-usual scenario. It finds that the hybrid approach—combining nature-based solutions like wetland restoration and tree planting with grey infrastructure—is highly economically viable, with returns ranging from USD 3.26 to USD 13.53 for every USD 1 invested. The primary economic driver is the avoidance of flood damages, with estimated avoided costs between USD 163.29 million and USD 747.11 million. The assessment also identifies co-benefits such as increased carbon sequestration, improved air quality, and local job creation to support the Sekondi-Takoradi Metropolitan Assembly in securing funding and aligning policies with climate priorities.

• The implementation of hybrid infrastructure in Sekondi-Takoradi is highly economically viable, yielding returns between USD 3.26 and USD 13.53 for every USD 1 invested, depending on whether the flood valuation is low, high, or average.
• The primary source of economic benefit is the avoidance of flood damages and infrastructure maintenance costs, with avoided costs estimated between USD 163.29 million in limited flood scenarios and USD 747.11 million in severe flood scenarios.
• The proposed hybrid interventions—which include urban gardens, green space development, tree planting, wetland restoration, and improved drainage—provide several co-benefits, including improved air quality, increased carbon sequestration, higher land valuation, better health outcomes, and the creation of local jobs and skills.
• The assessment focused on two priority locations in Sekondi-Takoradi that are highly exposed to flood risks: Bakado and Sekondi Market.

APA

Guzzetti,, N. N. (2025). Hybrid Infrastructure for Urban Flood Risk and Climate-Related Hazard Management in Sekondi-Takoradi, Ghana. International Institute for Sustainable Development. https://www.iisd.org/publications/report/nature-based-solutions-flood-resilience-ghana

Chicago

Guzzetti,, Nathalia Niño,Marco. Hybrid Infrastructure for Urban Flood Risk and Climate-Related Hazard Management in Sekondi-Takoradi, Ghana. International Institute for Sustainable Development, 2025. https://www.iisd.org/publications/report/nature-based-solutions-flood-resilience-ghana.

Wikipedia

{{cite report |last1=Guzzetti, |first1=Nathalia Niño,Marco |title=Hybrid Infrastructure for Urban Flood Risk and Climate-Related Hazard Management in Sekondi-Takoradi, Ghana |publisher=International Institute for Sustainable Development |date=22 May 2025 |url=https://www.iisd.org/publications/report/nature-based-solutions-flood-resilience-ghana |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{guzzetti2025hybrid, author = {Guzzetti,, Nathalia Niño,Marco}, title = {{Hybrid Infrastructure for Urban Flood Risk and Climate-Related Hazard Management in Sekondi-Takoradi, Ghana}}, institution = {International Institute for Sustainable Development}, year = {2025}, month = may, url = {https://www.iisd.org/publications/report/nature-based-solutions-flood-resilience-ghana}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }