[AlaskaErik]

We have a winter home in Arizona and I see these all these bridges with the name of the river at each end. But I have yet to see any water running under these bridges. It's all river channels with trees growing in them. One is called the Santa Cruz River and apparently there used to be a real river with riverboats on it.

[rktman]

Start diggin’. You may find one and be rich beyond your wildest dreams. Than again, you might end up with a just sore back. :>)

[originalbuckeye]

Those are over the washes. When it rains here, it pours and those become torrential flood plains. There is a ‘Stupid Motorist Law’ here that says, ‘if you drive into a wash or low lying area where there are signs warning you not to cross, you will have to pay for a rescue’. Trust me, you don’t want to drive into a low lying area that looks flooded, because it usually is flooded and it will cost you a boatload to get rescued.