Investigation Into Leaky Spillway At Priest Rapids Dam Nearly Finished
Crews have finished drilling around 230 core samples in Priest Rapids Dam on the Columbia River in central Washington.
This several-months-long investigation was spurred by concern over a leaky spillway in the dam. There were also recent problems with the nearby Wanapum Dam—also on the Columbia River about 20 miles upstream.
Now, crews at Priest Rapids are installing 37 new instruments within the spillway. The devices will measure vertical movements, zero in on the trouble spot and also monitor the structure’s foundation. That work could take until fall.
After everything is set, Grant PUD says it will ask the Federal Energy Regulatory Commission to allow it to raise the water in the reservoir pool behind the dam again. The water has been lowered several feet since the spring when dam officials declared a non-failure emergency.
Engineering staff will also continue to look at what caused and led to part of the dam moving.
Grant PUD officials declared a non-failure emergency at Priest Rapids Dam back in March. Officials say the incident has never presented a safety risk to the public and th dam continues to generate electricity as usual.
Copyright 2018 Northwest News Network
Crews are drilling deep into southeast Washington’s Priest Rapids Dam on the Columbia River to find out the extent of damage after leaks were recently discovered. Continue Reading Drilling Crews Search For More Leaks At Priest Rapids Dam
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In Central Washington, Grant Public Utility District officials have declared what they’re calling a “non-failure emergency” at the 1950’s-era Priest Rapids Dam northwest of Richland on the Columbia River. Continue Reading Priest Rapids Dam On Columbia River Has Leaks; Water Level Lowered To Relieve Pressure