Another water main break flooded roads, sidewalks and even a restaurant patio in Los Feliz overnight.
Mayor John Heilman estimated that between 150 and 200 vehicles were damaged or destroyed in flooded garages.
A partial shutdown of Sunset Boulevard could have a big impact on Monday's commute. Crews say they have made "significant progress'' replacing the broken section of a 110-year-old water pipe.
Two separate pipe problems triggered flooding in Venice on Saturday, damaging underground parking structures and impacting service for more than 60 customers.
A new section of pipeline has been installed in West Hollywood, replacing a 25-foot damaged section that ruptured, flooding busy streets on Thursday.
The cleanup continues after the massive water main break left residents facing what officials described as a lengthy recovery process.