Năm 1970, [[Ban quản lý Năng lượng Bonneville]] (''Bonneville Power Administration'') mở [[Trạm đổi điện Celilo]] (''Celilo Converter Station'') gần đó, đây là trạm phía bắc cuối cùng đưa 3.100 MW điện đến [[Los Angeles]].
In [], the Internet company [[Google]] began building a major data center, known locally as [[ Project 02]], along the Columbia River in The Dalles, using the area's reliable hydroelectric power and the underutilized fiber optic capacity of the area. The new complex includes two buildings, each approximately the size of a [[American football|football]] field, and two cooling plants four stories high. The project has created hundreds of jobs in the area, mainly in construction, with an additional 60-200 permanent positions expected later in 2006. <ref>Markoff, John and Saul Hansell (June 14, 2006). [http://www.nytimes.com/2006/06/14/technology/14search.html?ex=1307937600&en=d96a72b3c5f91c47&ei=5090 "Hiding in Plain Sight, Google Seeks More Power"]. ''The New York Times''.</ref>
In 1984, The Dalles was the scene of a [[Bioterrorism#1984 Rajneeshee Salmonella attack|bioterrorist incident launched by the Rajneeshee Cult]] in an attempt to gain control of the local government of Wasco County.<ref>[http://www.wbur.org/special/specialcoverage/feature_bio.asp wbur.org]</ref> It was the first known [[bioterrorism]] attack of the 20th century in the United States. ( See [[Bhagwan Shree Rajneesh]].)