EARTHSC 2GG3 Lecture Notes - Lecture 10: Flood, Nile Delta, Flash Flood
1 Apr 2013
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Document Summary
Floods cause of most # of fatalities in us. Hard years of warning but no action led to all the damage. Floods can become the largest natural disaster. Most ppl live on coast lines ( new orleans) Levees things we do to control floods makes them worse at times. Manitoba red river flooding (1950 and 1997) As # of floods increases costs also increase (more people) Large amount of precipitation falling in a very short period; flash flood. Large amount of precipitation falls steadily over a longer time period. 2 foot of water enough to move a car. Flash flood most common cause of death in grand canyon. The upstream area from which surface water flows towards the channel. Topographic line or boundary separating watersheds (ex. Measured volume of water flowing past a cross section of a river in a given amount of time. Q discharge (m3/s) v velocity (m/s)
