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The River Basin  
 Introduction
Geography
Climate and Weather
Hydrology
Principles of Hydrology
 Water Cycle
 Surface Water
 Groundwater
 SW/GW Interactions
 Water Balance
 Hydrology of the Orange-Senqu River Basin
Water Quality
Ecology and Biodiversity
 References


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Hydrology:

Principles of Hydrology

   

The principles of hydrology deal with physical hydrology, also referred to as environmental hydrology (Ward and Robinson 2000). Water is studied through hydrology as an element of the landscape and how it interacts with its environment. Its abundance and its quality are all measured scientifically.

The science of hydrology examines water in the smallest streams, in lakes, reservoirs, aquifers and as a united system at the catchment level. This section examines some of the science associated with hydrology in:

 

Lets'eng la Letsie in Lesotho is a Ramsar designated wetland associated with a 1m deep man-made lake, which is surrounded by vegetation types that demonstrate high biodiversity and endemism.
Source:Lesotho Water Commission 2003
( click to enlarge )

 

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Explore the sub-basins of the Orange-Senqu River


Tour video scenes along the Orange-Senqu River related to the River Basin


Investigate land cover and terrestrial ecoregions in the basin


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


Explore the interactions of living organisms in aquatic environments


 
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