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Lower Granite Upgrades to Close Dam for 3 Days by Staff Tri-City Herald, December 5, 2011

POMEROY -- Lower Granite Dam's navigation lock near Pomeroy will close to all river traffic from 8 a.m. to 4 p.m. Monday through Wednesday, according to the Army Corps of Engineers' Walla Walla District.

The eight-hour lock closures are necessary to enable contractors to complete upgrades to the emergency backup diesel generator for the navigation lock. The lock will be fully functional after 4 p.m. on each of these days.

Delays of up to an hour or more may be necessary to accommodate heavy vehicle and equipment movement on top of the dam.

Travelers can call 888-DAM-INFO (326-4636) for the most current dam-crossing information.