The LA river scenes were great!
I'm sure there are exhaustive discussions on a variety of threads about how often the LA riverbed (aka "the washes") was used in dozens of films...
Well there're no such threads here... From top of my head I can only think of 3 such films at the moment - Point Blank, Repo Man and To Live And Die In L.A.. "facts are stupid things" Ronald Reagan
Believe it was used in "Chinatown", also.