Geography 1100 Lecture Notes - Wave Height
Document Summary
Valley side steepness - rainfall event being generated, higher peek. Vegetation- if surfact is bear, then more water gets into the river faster. Forest: 80-90% of precipitation moves into the ground. Agriculture: 40-50% of precipitation moves into the ground. Suburban: 50-60% of precipitation moves into the ground. Climatological steady rain intense storm rapid snowmelt rain or snow ice jams hurricanes. Catastrophic earthquakes can cause flooding landslides dam failures tsunami ice dammed lakes volcanic eruptions. What can intensify flooding-change in the nature of the basin such as: Vegetation- surfaces that have high amounts of vegetation hold more amounts of water. Effects of humans- the building of dams, bridges over dams. Every time you build a bridge overa river you make the river a litle narrower which narrows the stream which can backup water behind the bridge. Shape of basin- narrow round can effect flooding potential. When river lengths are different, water will either reduce or raise due to the flooding potential.
