Did you know the vast majority of rivers in the world flow from north to south? This is almost a freaky weird statistic, molding our distinction about north being on top of the world. King of the hill. For goodness sakes, even Santa lives up there!
I think the misnomer about which way rivers are “supposed” to flow comes about partially because our minds are conditioned to believe, when considering a map, that north is up(hill) and south is down(hill). Kinda like the drip drip drip of the coffee pot.
These north-to-south flowing rivers do follow a basic rule of plumbing. There are actually 3 basic rules of plumbing. Don’t know them? The 3 rules of plumbing: (1) hot’s on the left, cold’s on the right, (2) stuff, like waste, or sewage (a nice way of putting it) doesn’t flow uphill, and (3) payday is Friday. Which rule do the rivers follow? Ummm, it’s #2.