Columbia Snake River System Extended Lock Closure

The federal government has made significant investments in the Columbia Snake River System (CSRS). Beginning December 10, 2010, the U.S. Army Corps of Engineers closed the system to make necessary repairs to The Dalles, John Day and Lower Monumental navigation locks. Extended lock closures of this kind are very unusual, but are necessary to maintain the integrity of the transportation system. The infrastructure investments and major maintenance made during this closure will have long term benefits for the entire Northwest, a region that is poised for tremendous growth well into the future.

PNWA has worked closely with the Corps and navigation stakeholders since mid-2009 to minimize impacts on river users during this closure. PNWA continues to work to assure the reliability of navigation in the Northwest.

For more information, contact Kristin Meira at 503-234-8556 or

Supporting Materials

PNWA press release announcing official reopening of CSRS
PNWA's extended lock closure fact sheet

Columbia Snake River System fact sheet
Corps' extended lock closure web site