Taoiseach Enda Kenny says building flood defences in Cork will cost between €50m and €100m.
Mr Kenny said Environment Minister Phil Hogan is the line minister in charge of the Government response to floods.
The Taoiseach said Mr Hogan and OPW minister Brian Hayes are due to visit a number of areas affected by the flooding.
Mr Kenny offered “congratulations” to communities and groups who have reacted to flooding, working with the emergency services.
“I’ll tell you this much. There’ll be no more planning for flood plains,” he said.