February 2025

River capture

By |2025-02-12T09:02:51+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

River capture. River capture. ZIMSEC O Level Geography Notes: River capture

  • This is a process where one River captures the headwaters on a nearby stream.
  • This can occur due to several reasons viz:
  • Tectonic earth movements, where the slope of the land changes, and the stream is tipped out of its former course.
  • Natural damming, […]
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Landforms resulting form river processes

By |2025-02-12T09:32:44+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Rapids near Niagara Falls. Image credit NiagaraFallsLive.com Rapids near Niagara Falls. Image credit NiagaraFallsLive.com ZIMSEC Geography Notes: Landforms resulting from river processes

  • A river through its processes of erosion, transportation and deposition forms several landforms.
  • These can be broadly divided into those landforms resulting from erosion and deposition.

Landforms […]

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The construction of dams for multiple purposes

By |2025-02-12T09:09:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Lake Kariba. Image credit newsday.co.zw Lake Kariba. Image credit newsday.co.zw ZIMSEC O Level Geography Notes: River Processes: The construction of dams for Multiple purposes

  • a barrier constructed to hold back water and raise its level, forming a reservoir.
  • Daming involves the building across a river to hold the water back.
  • Strictly speaking the […]
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Streambank cultivation,gold panning and other human activities

By |2025-02-12T09:10:51+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Bananas growing near a stream. Image credit MediaWiki. Bananas growing near a stream. Image credit MediaWiki. ZIMSEC O Level Geography Notes: River Processes: Stream bank cultivation

  • Stream bank cultivation refers to the practice of growing or cultivation of crops near a wetland, stream or river.
  • Sub-Saharan Africa has faced political, socio-economic problems […]
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Braiding and Alluvial fans

By |2025-02-12T09:41:42+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Braided River. Image credit patternsofthefuture.com Braided River. Image credit patternsofthefuture.com ZIMSEC O Level Geography Notes: Braiding and Alluvial Fans

Braiding

  • Braiding occurs typically during the dry season when a river’s discharge is greatly reduced.
  • The river may be split into several channels which rejoin and split again.
  • These are known as braided river channels.
  • Rivers […]
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