Where does “trasvase” come from?

trasvase (Spanish) comes from Spanish trasvasar, from Spanish tras-, from Latin trāns, from Latin Padus, from Lepontic Bodincus, from Proto-Indo-European bʰudʰmḗn, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

trasvase (Spanish): diversion (of water, funds)