I know they did it before climate change was a big issue, but you'd still think someone would have said, "maybe we shouldn't build a city in the middle of a desert?"
Of course, there's also Phoenix, Salt Lake City, etc...
Multiple Southwestern cultures thrived and then died out due to climate change. But who'd ask a pesky Injun whether or not that was a good place to build a city?
It was a railroad town at the start, so really just a “once we get through this desert we’ve made it to California.” And after that it was the Boulder Dam worker town, which is where all the casinos came from