Types
Drainage divides can be grouped in three types:
- Continental divide
- A divide in which waters on each side flow to different oceans (for example: the Nile and Congo)
- Major drainage divide
- Waters on each side of the divide never meet, but do flow into the same ocean (for example: the divide between the Yellow River basin and the Yangtze)
- Minor drainage divide
- Waters part, but eventually rejoin at a river confluence (for example: the Mississippi and Missouri divides)
Drainage divides hinder river navigation. In pre-industrial times, water divides were crossed at portages. Later, canals connected adjoining drainage basins.
Read more about this topic: Drainage Divide
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