​​​​​​​​GWFlood is a groundwater flood monitoring and mapping programme aimed at addressing the knowledge gaps surrounding groundwater flooding in Ireland. The programme was initiated in response to the unprecedented groundwater floods of Winter 2015/2016 and is a collaborative effort combining the karst groundwater expertise of Geological Survey Ireland and Trinity College Dublin. The project is providing the data and analysis tools required by local and national authorities to make scientifically-informed decisions regarding groundwater flooding.