If liquid water pops out onto Mars' surface, it can create short gullies about 550-yards (500-meters) long. We used a computer to simulate the flow of liquid water within gully channels.  -   Jennifer Heldmann     Quotes
If liquid water pops out onto Mars' surface, it can create short gullies about 550-yards (500-meters) long. We used a computer to simulate the flow of liquid water within gully channels. Jennifer Heldmann