Water is more affected by the surface geometry of the fixture than the hemisphere. Snopes gives a nicely detailed explanation at the link below of the urban legend that claims drains drain opposite on different sides of the equator.
It can flow either way.
Water flows in both directions regardless of hemisphere. In Physics, there is the Coriolis Effect that describes the flow/movement of water due to a variety of factors, and this is sometimes used to add validity to the myth, but the Coriolis Effect does not occur in small bodies of water such as a sink or toilet. The direction of water flow in a a sink or toilet depends on the direction that the water flows into the sink or toilet -- regardless of hemisphere. You can test this yourself by pouring a pitcher of water from the left side of a sink and then from the right side, you will see that the water will flow accordingly -- this experiment will have the same result in Sydney, Australia as it will in London, England.
from the hub to the spigot
direction of flow
The direction that a river flows is called the flow or the drainages. Water generally flows downhill or from a higher elevation to a lower one.
The flow is from the roots to the plant so the flow goes up.
Where the ground water leakage direction meet into the surface water is called Base flow.
South
from the top to the bottom
Not sure what a suface cuurrent is. In deep water, there often are currents that flow in different directions at different depths. A surface current will flow in one direction, near the surface, while there will be a current flowing in the opposite direction deeper down.
100
Actually many rivers run north in North America. Water has no sense of direction. If flows downhill by gravity. Most rivers east of the Rocky Mountains do flow in a southerly direction because the elevation is lower to the south and they are flowing toward the Gulf of Mexico. Source: Riverlorian.com