Twenty years ago today at this exact minute I was watching my first really big flood in person on the Rillito River in Tucson, AZ. It was the first pulse in a series of big floods on nearly every big river in Arizona. The flooding lasted through February of that year. The floods in the winter of 1993 in Arizona fully convinced me to spend my career studying rivers. There is something particularly intriguing about watching and documenting the effects of floods of upwards of 145,000 cfs rip through desert river channels to make one interested in fluvial geomorphology. The photos here are from the USBR and show Roosevelt Dam on the Salt River and Bartlett Dam on the Verde River above their confluence upstream of Phoenix in Jan. 8, 1993. Without these (and other) dams on the Salt and Verde Rivers, nearly 300,000 cfs would have flowed through Phoenix on that day.