Mars, wenn er einen Meeresspiegel hätte

Is the sea level equivalent to Earth’s sea level?

Notice that most of the water is on one side. This means that way back, millions of years back when Mars had an atmosphere and liquid water, it also had a supercontinent.

Mars is pretty cold with average daily temperatures being under freezing and daily minimum being antarctic winter temperatures year round so I imagine the water would be frozen over for much of the time. Also maybe interesting to point out that much of the depression that would be filled with water is actually a gigantic impact crater (Utopia Planitia) which happens to be the largest known one in the solar system.

Oh wait, is this just the Canadian shield again?

One theory for the difference in elevation between the north and the south of Mars is that the northern hemisphere is one giant impact crater

So the gravity in the northern hemisphere is greater than in the south? That’s the only way this water distribution is possible.

Oval Mars theory

For context this is a TerraGenesis map and the sea level here is 600,000cm