catchment

noun
  1. 1

    Any structure or land feature which catches and holds water; the collection of such water.

  2. 2

    A catchment area, or the people it serves.

verb
  1. 1

    To divide into catchment areas.

    โ€œthe catchmenting of mental health servicesโ€

Source: https://en.wiktionary.org/wiki/catchment