Despite what's written elsewhere on the internet, this classic scene from Terminator 2: Judgment Day was not filmed in the Los Angeles River. All of the creeks and channels below are San Fernando Valley tributaries of the L.A. River, but they are not the river itself.
KNOWN FILMING LOCATIONS:
Burbank -- Burbank Western System -- Cohasset Bridge
Burbank -- Burbank Western System -- Lamer Ramp
Burbank -- Burbank Western System -- Lanark Bridge
Burbank -- Burbank Western System -- Morgan Avenue Tunnel
North Hills LA -- Bull Creek -- Nordhoff Bridge
North Hills LA -- Bull Creek -- Plummer Bridge
Northridge LA -- Granada Channel (aka Bull Creek West Branch)
Shadow Hills LA -- Burbank Western System -- Nettleton Bridge
Shadow Hills LA -- La Tuna Canyon Channel -- Jordan Bridge
Shadow Hills LA -- La Tuna Canyon Channel -- 9700 La Tuna Canyon Road
Shadow Hills LA -- La Tuna Canyon Channel -- Vinedale Bridge (incl. confluence with Hansen Heights Channel)
The screen captures from the movie are in the column on the left. The matching location scout pictures from Nov 2016 are on the right....