Flood History
Flood History Timeline: River Floods, Flash Floods, Coastal Floods, and Rainfall Disasters
A flood history timeline explaining river floods, flash floods, coastal flooding, rainfall disasters, warning changes, and floodplain lessons.
Quick answer: Flood history shows how rainfall, rivers, terrain, development, levees, and warning decisions combine to create major disasters.
River floods
Long-duration rain and snowmelt can keep rivers high for days or weeks.
Flood impacts often continue after the rain stops.
Flash floods
Flash floods can happen quickly when intense rain falls on steep terrain, cities, burn scars, or saturated soil.
Short-fuse warnings are especially important.
Planning lessons
Historic floods influence maps, building rules, evacuation routes, and insurance decisions.
Local flood history is useful for every household.