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‘Watershed’ is a?

  • A.Geohydrological unit
  • B.Water parting boundaries
  • C.Drains water to a common outlet
  • D.All of the these

Answer: D

A watershed is all of these, so the answer is All of the these.

A watershed is a geohydrological unit: an area of land treated as one hydrological system. It is defined by water parting boundaries, the ridge lines that divide water flowing one way from water flowing the other. And it drains water to a common outlet, a stream, river or reservoir at its lowest point.

Each of the first three options states one part of the same definition, so none of them alone is complete.

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