Here is everything you need to know about water, written in response to the question "Why does the Red River flow north?"
> There are several reasons the Red River flows north while
> many other rivers flow south. Water (H2O) is a polar molecule,
> that is, the positively charged hydrogen atoms like to hang out
> more or less on one side of the molecule while the negatively
> charged oxygen likes to hang out on the other side. This leads to
> a charge imbalance that causes water to want to flow toward the
> Earth's magnetic poles. Now you are thinking "but don't most
> rivers flow south?" The answer is yes and no, most rivers in the
> northern hemisphere flow south while rivers in the southern
> hemisphere flow north. There are two reasons for this. The
> first is that the centrifical force of the Earth's rotation is
> literally throwing water toward the equator. The second is
> that the warm temperatures at the equator lower the viscosity
> of water so that water flows more readily in the lowwer latitudes
> so rivers find it easier to flow there.
>
> Now back to the Red River. The Red River is located close
> enough to the north pole that the pull of the Earth's magnetic
> field (remember that the Earth's magnetic field converges at
> the polls) is strong enough to overcome the higher viscosity of
> the northern waters and the centrifical forces of the the Earth's
> revolution (the diameter of the earth is less in the higher latitudes,
> so the effec tis less anyway) so that water in the high latitudes
> flows toward the poles. We see these flows in the polar oceans
> as water has converged on the North and South poles to form
> ice caps. Another effect of this magnetic pull vs. viscosity
> /centrifical force struggle on the behavior of rivers is the
> belt of deserts wrapping the Earth in the mid-latitudes
> where all the water has been pulled away to either the
> poles or the equator.
A necro thread deserves a necro reply; I pasted myself from 1997.