River Processes Archives - Free ZIMSEC & Cambridge Revision Notes

River profile

By garikaib|2025-02-12T09:30:07+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

The long profile of a river. Image credit worldbuildingschool.com ZIMSEC O Level Geography Notes: River Profile

Rivers can be studied from two aspects viz:
The long profile-this is the cross section along the river’s entire length from its source to its mouth.
The short profile-this […]

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River capture

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

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 garikaib|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 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 garikaib|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 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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Gorges /Canyons

By garikaib|2025-02-12T09:34:05+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

The Gorges du Verdon. Image credit weebly.com ZIMSEC O Level Geography Notes: Gorges

Gorge– is a narrow valley between hills or mountains, typically with steep rocky walls and a river/stream running through it.
These can occur in virtually any part of a river’s course provided […]

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Streambank cultivation,gold panning and other human activities

By garikaib|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. 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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Pot Holes

By garikaib|2025-02-12T09:36:01+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Potholes. Image credit thunderbolts.info Potholes. Image credit coolgeography.co.uk ZIMSEC O Level Geography Notes: Landforms resulting form Potholes

These are circular holes bored into the solid bedrock of a river by pebbles and stones carried by the river.
The rough river bed, mostly common in the upper course section or rivers, encourages turbulent […]

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FloodPlains and Levees

By garikaib|2025-02-12T09:39:09+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

A floodplain and its common features. Image credit weebly.com ZIMSEC O Level Geography Notes: Floodplains and Levees

Floodplain

These are typically found in the middle and lower course sections of the river.
They are gently sloping surfaces of alluvium that result from lateral erosion […]

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Braiding and Alluvial fans

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

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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