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The following series of Information Notes provide descriptions of key features within a river basin comprising:

• Lakes and Reservoirs
• Rivers
• Wetlands
• Groundwater
• Coasts and Estuaries.
• Sources of Pollution.

Wherever possible, links to websites have been included in these pages providing access to a large number of information sources relevant to a particular topic.

Information pages are also available on the:

• Hydrological Cycle
  (describing the natural water cycle)
• Water Treatment and Supply
  (describing the processes involved in the treatment and supply of drinking water)
• Sewage Treatment
  (describing the processes involved in treating sewage).