Floods are indeed one of the most prevalent hazards faced in the United States, and they can vary significantly in their impact. Some floods may affect only a localized area, such as a single neighborhood, while others can have extensive effects across an entire river basin, impacting multiple communities and states.
The rate at which floods can develop also varies widely; they can be slow, progressing gradually over several days, allowing for some preparation. Conversely, flash floods can occur with little to no warning, sometimes developing in just a few minutes and often without visible signs of precipitation, posing a significant risk to life and property.