Emergency downgraded at Wanapum Dam

Emergency downgraded at Wanapum Dam

Emergency downgraded at Wanapum Dam

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by Associated Press

KREM.com

Posted on March 5, 2014 at 11:19 AM

SPOKANE, Wash. (AP) -- The crack in a spillway pier at the Wanapum Dam has been downgraded to a "non-failure emergency."
 
The Grant County Public Utility District lowered the classification Tuesday night.

MORE: Drawdown eases pressure on Wanapum dam crack
 
The downgrade is the result of engineering surveys conducted Monday and Tuesday that show continued stabilization of the 65-foot long crack found last week on one of the dam's spillways.

WATCH: Diver finds crack in Wanapum Dam spillway

As of 6 p.m. Tuesday, surveys show that the impacted area is stable.
 
The PUD says the fracture has closed and the damaged section of the spillway monolith has moved back upstream by nearly 1.75 inches. That's the result of the utility's actions to lower water above Wanapum Dam and reduce pressure on the damaged spillway.

WATCH: Crack in Wanapum Dam triggers Flash Flood Watch
 
The dam is located a few miles south of Vantage on the Columbia River.

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