interbasin

/ˌɪntərˈbeɪsən/
adjective
  1. Relating to or involving the transfer of water between two or more drainage basins (watersheds).
    • The government approved an interbasin pipeline to supply water to the growing city.
    • Environmentalists are concerned about the effects of interbasin diversion on local ecosystems.
    • The interbasin water transfer project brought water from the river to the dry farmland.