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A stretch of the busy street between Beverly Glen and Coldwater Canyon was closed for hours as crews raced to make repairs. It was reopened shortly before 4 p.m., but there is still a mess to clean up at the bottom of the canyon.
It took DWP crews about four hours to get the water shut off in the area. Water and mud flowed down residential streets, saturating tennis courts at the bottom of the hill.
Firefighters arrived and used sandbags to divert some of the water, but much of the water continued to rush downhill.
No homes were flooded by the water main break.
In South L.A., a 6-inch water main burst at Wall and East 83rd streets at around 2:10 a.m., causing a sinkhole. Another 6-inch main burst at the intersection of Florence and Van Ness avenues at 2:28 a.m., forcing street closures.
In September alone, there were 44 water main breaks. The Department of Water and Power said that it was not an abnormal number, but what is unusual is the severity of the breaks.
DWP officials said the number of significant water main breaks is down nearly 50 percent from September, with just 18 in October.
The L.A. DWP has asked for an outside review to look into what is causing the ruptures. So far, no preliminary findings have been released.
Eyewitness News reporter Amy Powell contributed to this report.