The general direction a river flows is down. The water responds to the pull of gravity, and it is pulled down - whichever way that happens to be (north, south, east, west, or whatever). Water flows downhill. Simple and easy. Nothing tricky about it.
The answer is... A river only flows down hill
No river flows southwest through Dublin. The river Dodder flows from the southwest, in a northeast direction and the river Tolka flows in a southeasterly direction.
The Nile river flows in the opposite direction of the Euphrates and Tigris river.
It flows West.
Water always flows down a river, so upstream is the opposite direction from the direction in which the water flows.
The Magdalena River of Colombia mainly flows north.
west
the river flows north
It flows downwards. It flows downwards.
it flows generally in the southwest direction
The Darling River flows in a southwesterly direction from southern Queensland through western New South Wales into the Murray River.
Nile River.