excessive rain. arriving ocean waves, such as a storm surge. ice jams, melting snow, and melting ice. a levee or dam breaking.

The Lynmouth Flood, which primarily affected the community of Lynmouth in north Devon, took place on the night of August 15–16, 1952. A storm with significant rainfall, already saturated soil, and flood debris caused the community to flood, resulting in a death toll of 34.