Before revision: Coincidence Extreme flood events often result from coincidence such as unusually intense, warm rainfall melting heavy snow pack, producing channel obstructions from floating ice, and releasing small impoundments like beaver dams.Abbett, Robert W., American Civil Engineering Practice, John Wiley & Sons, 1956 Coincident events may cause extensive flooding to be more frequent than anticipated from simplistic statistical prediction models considering only precipitation runoff flowing within unobstructed drainage channels.United States Department of the Interior, Bureau of Reclamation, Design of Small Dams, United States Government Printing Office, 1973 Debris modification of channel geometry is common when heavy flows move uprooted woody vegetation and flood-damaged structures and vehicles, including boats and railway equipment.
After revision: Climate changeCoincidence Extreme flood events often result from coincidence such as unusually intense, warm rainfall melting heavy snow pack, producing channel obstructions from floating ice, and releasing small impoundments like beaver dams.Abbett, Robert W., American Civil Engineering Practice, John Wiley & Sons, 1956 Coincident events may cause extensive flooding to be more frequent than anticipated from simplistic statistical prediction models considering only precipitation runoff flowing within unobstructed drainage channels.United States Department of the Interior, Bureau of Reclamation, Design of Small Dams, United States Government Printing Office, 1973 Debris modification of channel geometry is common when heavy flows move uprooted woody vegetation and flood-damaged structures and vehicles, including boats and railway equipment.