Hola,

I was wondering if we're terraforming Mars sometime in the near future, where would the major rivers flow? I can't seem to find any info or artist renderings of where rivers would start from and flow to.

The reason why I ask is that I'm writing some fiction and worldbuilding a futuristic terraformed Mars. I noticed that I didn't have any rivers. Despite technological advancements, I would assume that it would still be a good idea for settlements near rivers and the coast to expand into cities since rivers were often a great source of water, make it easier to defend, and easier to transport a large amount of goods.

I was thinking of writing a python software that would scan for linear depth changes in heightmap images of Mars, but that would only work if the heightmap images were in good enough detail.