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EARTHSC 2GG3 (199)
Lecture

Lecture 35.pdf

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Department
Earth Sciences
Course
EARTHSC 2GG3
Professor
Sergei Basik
Semester
Fall

Description
FLOODS AND HUMAN INTERACTIONSLecture 35 November2620131 Development Effects on FloodsEarly towns established along rivers for access to water and transportationSevere alterations of landscape through urbanization logging grazing forest firesAdded sediment load to riversIncreased size and damaging nature of floods 11 UrbanizationIncreasing urbanization promotes increasing numbers of flash floods and higher flood levelsWherever roads and buildings cover landscape water forced to run off rapidly into nearby streams sometimes through concrete channelsDriving through flooded roadway can be dangerous even fatalForce of water against car can wash it downstreamDeep erosion may not be visible underwaterDifficult to escape from submerged and sinking car
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