Watershed may refer to:* Watershed, drainage divide (non-American usage) Watershed, drainage basin (North American usage) Watershed (algorithm), an algorithm used in image processing Watershed area (medical), an area with overlapping blood supply Watershed stroke, a stroke in a brain watershed area Watershed (television), a time each evening after which certain material may be shown Music: Albums: Watershed (Grant McLennan album) Watershed (K.D. Lang album) Watershed (Opeth album) Ban… (More on Watershed)