City says Tempe lake dam was working properly - East Valley Tribune: Tempe

City says Tempe lake dam was working properly

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Posted: Monday, July 26, 2010 3:02 pm | Updated: 4:11 pm, Wed Dec 3, 2014.

An investigation into what caused a break at the Tempe Town Lake dam has revealed the rubberized dam was working properly up until the minute it failed.

The City of Tempe said in a news release Monday that pressure records show everything was normal. Then at 9:44 p.m. Tuesday, the dam failed sending one billion gallons of water out of the urban lake and down the Salt River channel through Phoenix and beyond.

The city said there is no indication of a precursor of the event or a gradual decline. There is also no indication of a control system failure, such as overfilling or excessive pressure build up.

Tempe said it will continue to investigate what caused the dam break. Police have determined that criminal activity was not involved.

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