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Home The River Basin People and the River Governance Resource Management
The Limpopo River Basin
 Introduction
Geography
Climate and Weather
Hydrology
 Principles of Hydrology
 Water Cycle
 Surface Water
 Streams & Rivers
 Lakes and Reservoirs
 Flooding
 Groundwater
 SW/GW Interactions
 Water Balance
 Hydrology of the Limpopo Basin
 Surface Water
 Groundwater
 SADC Hydrogeological Map
 SW/GW Interactions
 Flooding
 Water Balance
 Hydrology of Southern Africa
Water Quality
Ecology and Biodiversity
Sub-basin Summaries
 References

 



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Hydrology  

Hydrology is the scientific study of water, seeking to explain the water balance equation in terms of time and space, and assessing the impact of physical and chemical processes and their role in ecosystems.

The Limpopo River Awareness Kit approaches Hydrology from a holistic perspective, including surface water, groundwater and the interactions between the two.

Chapter Summary

This chapter covers the following concepts and materials:

  • The key elements of the water cycle, including surface water, groundwater and the interaction between these two resources
  • The principles of hydrology
  • The hydrology of the Limpopo River basin
  • The hydrology of southern Africa

Life on Earth is sustained by water, which is available to plants, animals and other organisms in three states: solid, liquid and gas (water vapour). The continuous movement of water on and below the earth’s surface, and between the earth and the atmosphere is known as the water cycle or hydrologic cycle. Only a small fraction of the water in the hydrologic cycle is available freshwater. Freshwater is therefore a precious resource requiring careful management and protection.

Within the hydrologic cycle, rivers form the link between rainfall and snow melt over land, and waterbodies such as lakes, wetlands, and the sea. The timing, extent, and pathway of water movements are critical to biota, including people, that depend on specific sources of water. This chapter describes the processes and environmental features related to the movement of water across the landscape within a river basin.

Typically, river systems include the entire length of the main channel (from headwaters to the sea) and associated permanent or temporary water bodies (floodplains, lakes, pools, estuaries, and deltas). Exceptions to this are rivers such as the Okavango River that flow inland.  These components of the river system and the surrounding landscape it drains (its watershed), are interconnected and interdependent. Because of these linkages between upstream and downstream ecosystems, river basins provide a convenient and logical unit for considering and managing most environmental systems (Beekman et al. 2009).

The Limpopo River, Legodimo Nature Reserve, Botswana.
Source: DiPerna 2009
( click to enlarge )

 



Interactive

Explore the sub-basins of the Limpopo River


Explore the interactions of living organisms in aquatic environments


Examine how the hydrologic cycle moves water through and around the earth


Tour video scenes along the Limpopo related to The River Basin Theme