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Summary Grade 12 IEB Geography: Geomorphology R85,00
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Summary Grade 12 IEB Geography: Geomorphology

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These notes cover "Geomorphology" as per the IEB SAGS. Included are notes on Drainage systems in South Africa, Fluvial Processes and Catchment & River Management. Assessed diagrams and drawings are also included. if you have any suggestions to improve my notes, please do not hesitate to leave a rev...

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  • January 29, 2023
  • 32
  • 2022/2023
  • Summary

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GEOGRAPGHY:
GEOMORPHOLOGY




By Mokgadi Seema

, GEOMORPHOLOGY


This section includes:
• DRAINAGE SYSTEMS IN SOUTH AFRICA
• FLUVIAL PROCESSES
• CATCHMENT AND RIVER MANAGEMENT




@STUDYNOTESBYM

, 1. DRAINAGE SYSTEMS IN SOUTH AFRICA
WHAT IS A DRAINAGE BASIN?

• A drainage basin is an area that is drained by a river and its tributaries,
separated by a high lying area




https://cdn.savemyexams.co.uk
https://worldrivers.net/wp-content/uploads/2020/03/Screenshot_26.png




FEATURES AND CONCEPTS OF A DRAINAGE BASIN

TERM DEFINITION
DRAINAGE An area that is drained by a river and its tributaries, separated
BASIN by a high lying area

CATCHMENT An area that is drained by a river and its tributaries, separated
AREA by a high lying area and including underground flow

RIVER SYSTEM The entire natural water system in a drainage basin made of
many individual stream channels that join to form one main
stream

WATERSHED A high lying area that separated different drainage basins

Minor watershed- a smaller high lying area within a drainage
basin (also known as a =n interfluve/ spur)

NOTE- the Drakensberg mountains in South Africa are a major
watershed that separate South Africa into the east that
receives optimal rainfall and the drier west

@STUDYNOTESBYM

, SPUR/ An area of high ground separating tributaries
INTERFLUVE
TRIBUTARY A smaller stream that flows into a larger stream
DISTRIBUTARY A larger stream that flows into smaller streams

RIVER MOUTH Where a river enters the sea

SOURCE Where a river rises or begins

CONFLUENCE The point at which two tributaries or streams join

SURFACE RUN- Rainfall water that moves over the land surface after the
OFF ground has absorbed its maximum capacity of water

GROUNDWATER Water held underground in the soil or in the pores of rocks
beneath the earth’s surface




https://www.jkgeography.com/uploads




@STUDYNOTESBYM

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