International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(5201) Superposed drainage, Super imposed drainage or Inherited drainage
A drainage system whose pattern has been determined by previously existing geological terraces and that has been let down, as erosion progressed, upon rock and rock structures of very different nature. The major streams maintain their old courses and are generally not in adjustment with the topography and rock structures of the new terrain.

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