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River Systems (Flood (Prevention (artificial levees, create dams, sandbags…
River Systems
Flood
discharge of a stream becomes so great that it exceeds the capacity of its channel to overflow its banks
causes: heavy rain, rapid spring snowmelt
Cause damage, come without warning, $$$, break dams
Prevention
artificial levees, create dams, sandbags, limited construction around areas known to flooding
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Drainage basin
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drainage system, river basin, watersheds
Depend on...
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Gradient of land (how steep it is). More steep=more water will run down. Less steep=more the water will just sit there
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sometimes the water in a river is off. During a flood there's a surplus of surface water (helps recharge groundwater)