Project Description

Malachy Walsh and Partners were commissioned by Dun Laoghaire Rathdown County Council (DLRCC) to undertake a coastal defence strategy study of the Council’s coastline.  The study developed a strategy for the management of coastal defence related issues within Dun Laoghaire Rathdown.  The strategy is designed to provide a framework for policy decision making and action related to both the provision and the management of sustainable coastal defence policies.

Malachy Walsh and Partners undertook as part of the study: collection, review and collation of existing data; stakeholder consultation; topographic, hydrographic data collection; walkover survey; inspection of existing defences; establishment of risk mechanisms and areas at risk; assessment of coastal and tidal processes including waves, tide levels and currents, sediment transport and wave overtopping; assessment of risk due to erosion, cliff instability, tidal flooding and wave overtopping; impacts of climate change; evaluation of options from benefit, cost and environmental points of view; preparation of strategy including objectives, multicriteria analysis and prioritization. Tasks also included management of tidal and wave process modelling, Strategic Environmental Assessment Screening and Appropriate Ecological Assessment of the study’s plan of action.