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

This report by the NBI Global Resource Centre evaluates the economic, social, and environmental viability of implementing hybrid infrastructure—combining nature-based and grey infrastructure—to manage urban flood risks in Sekondi-Takoradi, Ghana. The analysis focuses on priority locations including Sekondi Market and Bakado, comparing a hybrid approach against a business-as-usual scenario.

• The implementation of hybrid infrastructure in Sekondi-Takoradi shows high economic viability, with a return on investment ranging from USD 3.26 to USD 13.53 for every USD 1 spent, 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. These avoided costs are estimated to range from USD 163.29 million in limited flood scenarios to USD 747.11 million in severe flood damage scenarios.
• The proposed hybrid interventions include a mix of nature-based and grey infrastructure, specifically wetland restoration, tree planting, green space development, urban gardens, and improved drainage systems.
• Beyond direct financial returns, the hybrid approach is estimated to provide several co-benefits, including increased carbon sequestration, improved air quality and health outcomes, higher land valuation, local job creation, and skills development.

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} }