What is a watershed?
A drop of water plummets out of a dark grey blanket of cumulonimbus gathered around the craggy peak of a mountain. As it falls, it is pushed by wind. Thermal upwellings might slow its descent as gravity drags it down towards the mountain top. Where this drop of water lands, on which side of the peak, along which ridgeline, into which crevice of rock, will determine its future path…
https://www.raincoast.org/2025/10/what-is-a-watershed/