Flash floods can occur anywhere. Even a slight slope can cause masses of water to flow towards a building during a downpour. Water can also collect in hollows or underpasses. Residents can use a checklist at the bottom of the page to make an initial assessment of whether or not their building is at risk of flooding. Comprehensive heavy rain hazard maps and risk information maps derived from them have been created for Wiesbaden. Access can be found under the following link:

After heavy rainfall, water can enter a building on a slope or in a depression in various ways: Masses of water above ground penetrate through defective roofs, leaking windows and door cracks and through cellar and light wells. Seepage water can also push into the building through the outer walls. And many building floods are caused by backwater from the sewer system, where wastewater from the sewer system runs into cellars or basements.