The term applied to the outside boundaries of a watershed is "MEANDER."
The Darby Creek Watershed prove it
"Flowing Together: A Guide to Our Watershed"
Shale Watershed
CLEVELAND DAM
The Roanoke River watershed and the New River watershed.
The Famous Virginia watershed is banana boat... it is a funny name but its true!
Drankensburg mountain
Watershed
Another name for destructive boundaries is toxic boundaries. These are boundaries that harm rather than support individuals in relationships or interactions.
Catchment/drainage basin.
Another name for constructive boundaries is healthy boundaries. This term is used because these boundaries help establish and maintain positive, respectful, and balanced relationships with others.
Watershed