Where is this water bulge or water hill?
How big is it?
Is it permanent?
Can it move around?
A fascinating physical anomaly.
You really do learn something new every day. Unless you are sleeping off a bad hangover or are in a medically-induced coma. In which case you’d be lucky to just remember tomorrow all the stuff you learned on prior days.
The one constant about water, is that it finds its own level.
You and I both probably learned that by seven, certainly ten.