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Drainage
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Geography 211 Drainage Donald Bodeker 894524H Tutor : Dr. Garry Moore Tutorial Wednesday 10 - 12 Index Introduction p 2 Drainage Problems p 3 Sources of excess water p 3 Drainage Systems p 4 Conclusion p 4 End Notes p 4 Bibliography p 4 Introduction The main objective of agricultural land drainage is to remove excess water in order to improve the profitability of farming the land. There area periods on most land when excess water occurs. However, these need not be too harmful provided the quantities are small, the periods of occurrence are of short duration or the excess occurs during a non critical season. Most land also has some natural drainage which assists in the removal of a certain amount of the excess water. It is only when large quantities occur for prolonged durations at critical periods, that it's removal bt artificial means may be feasible. Drainage Problems Excess water may occur on the land surface or deeper down in the...
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