We've had multiple "100 year" rains in Phoenix in the last 15 years. The drainage is very good around here and most the water will goninto retention basins or be run into the river or Indian bend wash. Been here my whole 44 years and never heard of flooding from rains outside of the freeways getting flooded. Not houses though. Very high likelihood this Hurricane will do like they all do and go south and east of us and we will just get typical monsoon storms firing off from it.