Rivers Review
Introductory Slide Show on Rivers
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Speed means energy and energy means erosion
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Stages of a river - Know the characteristics - Youthful, Mature and Old
Age.
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Drainage basins (catchment area, watershed)
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Drainage patterns - dendritic, trellis, parallel, radial (underlying
surface determines pattern)
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Tributaries, Interfluves and Divides
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Know the creation of the following:
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Levee
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Meander
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Oxbow Lake
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Delta
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floodplains
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yazoo streams
Moving Water
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Runoff - Overland Flow and Ground Water
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Inflitration and the factors that influence.
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Stream Velocity - slope and friction with the bed
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Discharge
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Stream Load - graphs
Stream Transport
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A river carries its load in three ways: Dissolved, Bed Load and Suspended
Load
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Competence and Capacity
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Critical Erosion Velocity - Settling Velocity
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How a dam can affect a river's balance
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Stream Equilibrium - why a river meanders - pools and riffles
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Can a river rejuvenate itself - yes - Lowering Sea Level, Uplift of land,
Increase in rainfall
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Floodplains
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How levees can be dangerous.
The Hydrograph Lab
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Interception, Infiltration and Surface Runoff - Know there relationship
during a rainfall.
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Understand the effects of different types of soil, vegetation cover and
land cover like Urban land use.
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Understand the idea of Lag Time (Peak of Storm and Peak of Discharge) -
also relate this to different types of land uses like Agriculture, Natural
and Urban.
- Dams - Three Gorges Dam, BEFORE, DURING, AFTER the dam (from in silenced
rivers)