subbasin

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English

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Etymology

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From sub- +‎ basin.

Noun

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subbasin (plural subbasins)

  1. (geography) A basin within a larger basin.
    • 2009 May 14, Felicity Barringer, “Rising Calls to Regulate California Groundwater”, in New York Times[1]:
      Since 2006 the surface of the aquifer, in the Kaweah subbasin of the San Joaquin basin, has dropped 50 feet as farmers pumped deeper, Mr. Watte says.