Flood Urban flooding in a street in Morpeth, England, 2008 A flood is an overflow of water (or rarely other fluids) that submerges land that is usually dry. [1] In the sense of "flowing water", the word may …

Oct 22, 2025 · Floods may: Result from rain, snow, coastal storms, storm surges and overflows of dams and other water systems. Develop slowly or quickly. Flash floods can come with no warning. Cause …

Dec 17, 2025 · Flood, high-water stage in which water overflows its natural or artificial banks onto normally dry land, such as a river inundating its floodplain. The effects of floods on human well-being …

Jan 22, 2024 · How to View and Obtain Flood Maps The FEMA Flood Map Service Center (MSC) is the official online location to find all flood hazard mapping products created under the National Flood …

3 days ago · Flash flood, thunderstorm alerts in effect for California with heavy rain expected to last days Potential impacts include the threat of widespread roadway flooding.

Basic information about flooding, from the NOAA National Severe Storms Laboratory.

Here you will find an interactive flood map, information describing the different types of flooding and educational material. You will also learn how the National Weather Service keeps you aware of …

Sep 30, 2024 · Prepare for a flood Know what to do if there is a flood watch or warning in your area. Floods, big or small, can have devastating effects on your home and your family. Learn how to …

Flood zones and maps Floods can happen anywhere, but some areas are at higher risk than others. Learn about your home’s risk level and how often floods happen in your area so you can prepare.

About Flood Map Service Center The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program …