GEOL 2390 Chapter Notes - Chapter 6: National Flood Insurance Program, Flood Insurance, 100-Year Flood
7 Nov 2012
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Document Summary
Floodplain hydrology drainage basin river slope or gradient base level longitudinal. Delta distributary channels dynamic equilibrium the flat surface adjacent to the river channel that is periodically inundated by flood water. The volume of water moving by particular location in a river per unit time. The configuration of the channel as seen in an aerial view, can be braided or meandering. Channels characterized b numerous gravel base and islands that divide and reunite the channel, steep slop and coarse sediment occur. Bends that migrate back and fourth across the floodplain, cutbank is on the outside of the bend (erosional) and point bars are on the inside (depositional) Deep areas produced by scour, or erosion at high flow and characterized at low flow by relatively deep slow movement of water. Shallow areas produced by depositional process at high flow and characterized by relatively shallow, fast moving water at low flow.
