News Releases

Corps reports oil spill at The Dalles Lock & Dam

Published June 14, 2018
Portland, Ore. – Today, dam operators from the U.S. Army Corps of Engineers confirmed the loss of approximately 53 gallons of oil from one of the generating units at The Dalles Dam. 

The Corps is dedicated to rapid spill responses and is in the process of determining the exact cause of the spill. Partner agencies, including National Response Center, Oregon and Washington emergency management offices and the Columbia River Intertribal Fish Commission, have been notified.

Earlier this year, the generating unit lost approximately 470 gallons of oil due to a faulty blade seal. The seal was replaced, and the unit returned to service. Following that incident, the Corps has been monitoring oil levels at the dam more frequently.

After fluctuations in the oil level were observed in the unit, Corps technicians removed it from service and initiated spill prevention protocols May 31, 2018. As a precautionary measure the unit was dewatered and isolated from the river. 

Corps workers have been investigating the exact cause of the leak and confirmed the loss of oil today. In response, the unit will remain out of service and isolated from the river until the investigation is complete and a solution is determined. 

Sarah P. Bennett

Release no. 18-031