IIR, "capture" is the geological term used when one river or stream starts taking water from another. (Generally due to erosion shifting their courses.) No id

IIR, "capture" is the geological term used when one river or stream starts taking water from another. (Generally due to erosion shifting their courses.) No idea if there is a correct geological term for what's happening here - but "theft", "steal", and "piracy" get the clicks, so...