To divide into catchment areas.
Any structure or land feature which catches and holds water; the collection of such water.
A catchment area, or the people it serves.
To pass around, to circulate sth.
To rotate, to move in a circle.
To circumvent or to outmanoeuvre someone.
To be sufficient to be shared, to be enough for everyone.
To go around the side of sth., to bypass something.
To go to another person's home or a public event.
To circulate, to move aimlessly but ghostly (threateningly and invisibly).
To physically swirl or rotate.
To evade sth.
To live behaving in a certain way, doing something regularly (followed by specification)