65-Foot Crack Found in Major Washington State Dam
Federal
regulators have been dispatched to Washington state to review a
65-foot-long crack discovered in a major dam, utility officials said.
The
2-inch-wide crack was found Thursday after divers were sent into the
Columbia River because engineers detected a misalignment in a spillway
on Wanapum Dam near the central Washington town of Vantage, said Tom
Stredwick, a spokesman for the Grant County Public Utility District.
A spillway is the part of a dam that controls the release of water downstream.
The water levels along the
8,320-foot-long dam are being drawn down about 3 feet per day to reduce
pressure on the structure while inspectors investigate, the utility
district said.
Stredwick said the
crack posed no immediate threat to public safety or to the dam's
electric generating capacity. But the National Weather Service issued a
flash flood watch for Grant County through the weekend as the water is
drawn down because "the potential exists for a rapid increase in flows
from Wanapum Dam."
In addition to
utility district engineers, officials of the Federal Energy Regulatory
Commission were on site to evaluate what to do next, Stredwick said.
M. Alex Johnson
M. Alex Johnson is a senior writer for NBC News covering general news, with an emphasis on explanatory...
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