1805Economy
Lewis and Clark camped near Mill Creek on October 25–27, 1805, and recorded the Indian name for the creek as Quenett.
1812Military
The War of 1812 led to the 1813 liquidation of the PFC, its properties like Fort Astoria sold to the North West Company.
1814Economy
=== Fur trade ===
The first use of the name Dalles, according to Oregon Geographic Names, appears in fur trader Gabriel Franchère's Narrative, on April 12, 1814, referring to th...
1821Economy
In 1821 the North West Company was absorbed by the giant London-based Hudson's Bay Company (HBC).
1824Military
Fort Vancouver, built in 1824, replaced Fort Astoria as the regional fur trade headquarters.
1838Government
=== Wascopam Mission ===
In 1838 a branch of Jason Lee's Methodist Mission was established at Celilo Falls, named the Wascopam Mission, after the native Wasco Indians.
1846Military
Until the construction of the Barlow Road in 1846, the only way to reach Fort Vancouver and the Willamette Valley was by rafting down the river from The Dalles.
1851Government
A post office was established within the boundaries of the current city in 1851, and The Dalles was incorporated as a city in 1857.
1853History
In 1853 it was changed to "Wascopum," then, in 1860, to "The Dalles".
1855Military
In 1855, at the end of the Cayuse War, the Indians living near The Dalles were forcibly relocated by the U.S.
1870History
In 1870, the State of Oregon received the property from the U.S.
1939Culture
congressman for OR-3, 1939–1955
Lefty Bertrand, Major League Baseball player
John Callahan, cartoonist, grew up in The Dalles
H.
1949History
The most snowfall in a season has been 85.5 inches (2.17 m) between July 1949 and June 1950.
1957Architecture
=== 20th and 21st centuries ===
Construction of The Dalles Dam in 1957 submerged the Long Narrows and Celilo Falls.
1963History
In 1963, Ken Kesey's novel One Flew Over the Cuckoo's Nest was published featuring the narrator, Chief, who is from The Dalles.
1970Government
In 1970, the Bonneville Power Administration opened the Celilo Converter Station near the northern terminus of the Pacific DC Intertie which sends 3,100 megawatts of electricity...
1977Education
The Dalles is also home to the main campus of Columbia Gorge Community College which began in 1977 as Wasco Area Education Service District.
1982History
In 1982, a curly-coated kitten was born on a farm in The Dalles owned by Linda and Dick Koehl.
1984History
In 1984, The Dalles was the site of the first and single largest bioterrorism attack in United States history.
1986History
In 1986, Penalty Phase, a film starring Peter Strauss and Melissa Gilbert, was filmed in and around The Dalles.
1997Culture
The circumstances of the attack are documented in an American Medical Association article (JAMA Vol 278, No 5, page 389, 6 Aug 1997).
2000History
=== 2000 census ===
As of the census of 2000, there were 12,156 people, 4,896 households, and 3,226 families residing in the city.
2006Government
== Economy ==
In 2006, 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 po...
2010History
=== 2010 census ===
As of the census of 2010, there were 13,620 people, 5,472 households, and 3,441 families residing in the city.
2012Education
In 2012, the top 15 employers in The Dalles according to the Mid-Columbia Economic Development District report on "Largest Employers in Wasco County" were:
== Education ==
Th...
2021History
=== Top employers ===
In 2021, Wasco County published a list of top employers in the region.