Water finds its own level
When the Red Run Drain is full of water nearly touching the bottom of bridges like Ryan Road north of Chicago Road
– think of all the connecting storm drains – around Warren,MI.
Subconsciously, we all know a massive full swimming pool surface is flat, even with the uneven deep diving areas, shallows, etc.
but we tend to forget the same thing happens underground, and unseen to human eyes.
Regardless of how many bends, twists, etc. it will always attempt to find a “common” elevation
Even over long, long distances, the water will
“seek” a common elevation
The pressure at a certain depth in the liquid is the same at all points at that depth.
Pressure at A = Pressure at B = Pressure at C = Pressure at D = Pressure at E
Notice that it is only the depth of the liquid that matters;
not the angle of the tube, the cross sectional area of the liquid column,
or the area of the liquid surface.
EVERYTHING has an upper limit
before it backs up