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Summary Fluvial geomorphology (IEB matric) - Geography

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Uploaded on
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Written in
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Typed notes of the entire fluvial geomorphology section for the IEB matric syllabus. Includes diagrams of all river features. These notes helped me achieve a distinction and be placed in the top 1% for Geography.

Institution
12th Grade
Course
Geography










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Institution
12th Grade
Course
Geography
Schooljaar
200
All documents for this subject (310)

Document information

Uploaded on
November 17, 2022
Number of pages
25
Written in
2022/2023
Type
Summary

Subjects

  • fluvial geomorphology
  • geography
  • matric
  • ieb
  • rivers
  • erosion
  • hydrograph
  • water
  • water management
  • upper course
  • lower course
  • middle course

Content preview

Fluvial geomorphology

Geography
Matric (grade 12)

,Contents
- Factors influencing surface runoff
- Flow regimes
- Drainage patterns
- Drainage density
- Discharge of a river
- Storm hydrographs
- Stream order
- River processes
- Grade
- Rejuvenation
- River features including diagrams
- River management

, Fluvial Geomorphology
Factors that influence surface runoff and groundwater:

Increased runoff Decreased runoff

gradient steep gentle
vegetation sparse dense
rock type impermeable permeable
soil type not porous (clay) porous (loam/sandy)
soil moisture saturated / wet unsaturated / dry
evaporation rate low (overcast) high
amount of rainfall lots litte
type of rainfall thunderstorms drizzle




Water table:

- Groundwater infiltrates through the soil and percolates (filters) through permeable rock until it
reaches a layer of impermeable rock. The water collects in the pores and cracks of the
permeable rock
- upper level of the zone of saturation
- water table is closer to surface in rainy season
- follows the shape of the land




Types of
rivers/
flow
regimes:
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