African Geotechnical Engineering | 09 February 2008
Climate-Resilient Design for Urban Drainage Systems in Coastal Ghana: An Engineering Perspective
A, m, a, r, i, y, a, h, A, b, d, u, l, b, a, a, l, i, ,, Y, u, s, u, f, D, a, n, k, a, i, ,, K, o, f, i, A, m, a, n, k, w, a, h
Abstract
Urban drainage systems in coastal Ghana are vulnerable to climate change impacts such as sea-level rise and increased precipitation intensity. A literature review and expert consultation were employed to analyse existing systems and potential solutions. Findings indicate a need for an increase in the slope gradient of drainage channels by at least 10% to accommodate higher stormwater flows expected under projected climate scenarios. The proposed design standards will enhance the capacity of urban drainage systems to manage increased rainfall and sea-level rise effectively. Adopt a phased implementation strategy, prioritising critical infrastructure first, followed by public education campaigns on flood preparedness. Climate-resilient design, urban drainage systems, coastal Ghana, climate change adaptation The maintenance outcome was modelled as $Y<em>{it}=\beta</em>0+\beta<em>1X</em>{it}+u<em>i+\varepsilon</em>{it}$, with robustness checked using heteroskedasticity-consistent errors.