1. The ridge of land that divides two river basins, determining the direction in which water flows
The Rocky Mountains form a major watershed in North America.
As Montanhas Rochosas formam um importante divisor de águas na América do Norte.
2. A turning point or crucial dividing line in events or history
The invention of the internet was a watershed moment for humanity.
A invenção da internet foi um momento crucial para a humanidade.
3. The area of land that drains into a particular river, lake, or body of water
The Amazon watershed covers a vast region of South America.
A bacia hidrográfica do Amazonas cobre uma vasta região da América do Sul.