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US Army Corps of Engineers
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13
May 2020
Corps warns mariners about underwater pile dikes on Columbia River
The U.S. Army Corps of Engineers advises recreational boaters and commercial mariners that recent high water levels may be concealing some pile dikes on the Columbia River.
15
May 2018
Corps warns mariners about underwater pile dikes on Columbia River
The U.S. Army Corps of Engineers advises recreational boaters and commercial mariners that recent high water levels may be concealing some pile dikes on the Columbia River.