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Lecture

Flooding Human Interaction.docx

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Department
Geology
Course
GEOL 2207
Professor
B.Ward
Semester
Summer

Description
Flooding Human Interaction – Land Use Changes We can make flooding variable based on land-use  River generally maintain a Dynamic Equilibrium o Balance between gradient, cross sectional shape, and flow velocity for sediment load  Land-Use changes can affect that equilibrium o Forest to farming creates more erosion and sediment o Sediment will build up the gradient of the stream o Stream will flow faster until it can carry greater amount of sediment o Farming to forest sets the opposite into effect Flooding: Human Interaction – Urbanization  Increasing impervious surface cover leads to more rapid discharge with higher peak flows – Reduces stream flow during dry season  When we have a city, we put houses on it o Roads, parking lot  When water falls, where does water go?  Go off roof into gutter  pipes  storm sewer  nearest creek o When we p
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