After reading through wikipedia on the word oasis, I'm declaring that I'm going to add an actual water source ... though, getting to this water source is difficult. Transporting water from its source to the town of Oasis is a much difficult task.<br/><br/>EDIT: Also, Aiden, imagine Oasis is on the only slope that carts can climb without the risk of overworking the horses that pull them. Saguaro Saloon will be the highest part of this slope, which is part of a wide plateau. Sort of like the terrain in the Torquemada part of RDR. I'd say I'll put Sweetwater, where the Stevens' Ranch is part of, to the northeast of Oasis, on a plateau like the one the saloon sits on, though the climate there is more hospitable that in the more hot desert. That rear gate I was talking about would be to the north of the saloon, and the path that ventures into the plateau can lead a small cart into a valley, where the real oasis is. Water is retrieved from the spring in the small valley and is carefully taking to Oasis.<br/><br/>Also, the water that they bring back is enough to fill the all water trough in Oasis for the horses and a limited supply served at a higher price that liquor at the saloon.