Eastern Oregon is the eastern part of the U.S. state of Oregon. It is not an officially recognized geographic entity, thus the boundaries of the region vary according to context. It is sometimes understood to include only the eight easternmost counties in the state; in other contexts, it includes the entire area east of the Cascade Range. Cities in the broadest definition include Baker City, Bend, Burns, Klamath Falls, La Grande, Ontario, Pendleton, and The Dalles. Major industries include timber, agriculture, and tourism, with the main transportation corridors consisting of I-84, U.S. Route 395, U.S. Route 97, U.S. Route 26, U.S. Route 30, and U.S. Route 20. Compared to the climate of Western Oregon, the climate of Eastern Oregon is a drier continental climate, with much greater seasonal variations in temperature. Unlike the Willamette Valley, Eastern Oregon receives a significant amount of snow in the winter. Some parts of Eastern Oregon receive fewer than 10 inches (250 mm) of rain yearly, classifying them as deserts. This desert climate is in part due to a rain shadow effect caused by the Cascade Range. Pine and juniper forests cover 35% of Eastern Oregon, much in the mountains that include the Blue Mountains, Strawberry Mountains, Wallowa Mountains, Trout Creek Mountains, Ochoco Mountains, and Steens Mountain. Basalt flows from the Columbia River Basalt Group covered large sections of Eastern Oregon 6 to 17 million years ago. Other landforms include the Alvord Desert, Owyhee Desert, Warner Valley, Deschutes River, Owyhee River, Grande Ronde River, Joseph Canyon, The Honeycombs, and Malheur Butte.

Reuben Patrick Boise (June 9, 1819 – April 10, 1907) was an American attorney, judge and politician in the Oregon Territory and the early years of the state of Oregon. A native of Massachusetts, he immigrated to Oregon in 1850, where he would twice serve on the Oregon Supreme Court for a total of 16 years, with three stints as chief justice. He served during both the territorial period and after statehood. Early in his legal career, he worked as a district attorney. A Democrat, Boise was a member of the Oregon Constitutional Convention in 1857, served in the Territorial Legislature, and helped to codify the laws of the Oregon Territory. He also served as a circuit court judge, and was a trustee at several colleges. In addition to his legal career, he was proponent of education and served on the boards of several schools in the Willamette Valley. Educated at Williams College, he was twice married to women from Massachusetts, and had a total of five children.

• August 5, 1942, businessman Simon Benson of the "Benson Bubblers" fame dies.
• August 7, 1958, Alberto Salazar, marathon runner and member of the Oregon Sports Hall of Fame, is born in Cuba.
• August 9, 1977, Portland State University alumnus and one-time Portland Trail Blazers forward Ime Udoka is born in Portland.
• August 14, 1848, the Oregon Territory is created when President Polk signs a bill passed by Congress.
• August 15, 2003, judge Rives Kistler is appointed to the Oregon Supreme Court and becomes the first openly gay justice on the court.
• August 17, 1857, the Oregon Constitutional Convention begins meeting in Salem.
• August 27, 1966, the Astoria–Megler Bridge opens across the Columbia River, linking Astoria to Washington state.
• August 28, 1970, Vortex I, a state-sponsored rock music festival, begins in Clackamas County.

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• ... that the Miocene maple Acer traini may be the same species as the living Douglas Maple (fruits pictured)?
• ... that "urban Indian" activist Bernie Whitebear was the brother of groundbreaking health care administrator Luana Reyes and of sculptor, curator and memoirist Lawney Reyes?
• ... that four Portland Trail Blazers head coaches have spent their entire National Basketball Association coaching careers with the Trail Blazers?
• ... that Oregon Court of Appeals Judge David Schuman finished second in the North American speed skating finals in the 220-yard competition at the age of 17?

• ... that William H. Strayer was the only Democrat in the Oregon State Senate in 1931?
• ... that in Pacific States Telephone & Telegraph Co. v. Oregon, decided 110 years ago, the U.S. Supreme Court upheld the initiative process?
• ... that journalist Robert Evans had his hand broken by a member of the Proud Boys while covering the George Floyd protests in Portland, Oregon?
• ... that when John Emmitt was traveling to the Oregon Territory in 1852 along the Oregon Trail, two of his three children died of cholera and were buried along the route?
• ... that Gus C. Moser served five 4-year terms in the Oregon State Senate, including two non-consecutive 2-year periods as senate president, to which post he was elected unanimously in 1917?
• ... that the keepers of Carl Griffith's sourdough starter, which traveled the Oregon Trail in 1847, are sworn to keep no other sourdough starter in their homes?
• ... that the bishop of Oregon's residence in Portland once had a private chapel, a ballroom, and a wine cellar?
• ... that in 1943, the United States Army conducted a large-scale battle near Stauffer, Oregon, as part of the Oregon Maneuver training exercise preparing troops for combat in World War II?

The Dalles Carnegie Library is a historic building located at the corner of Fourth and Washington Streets in The Dalles, Oregon, United States. It is one of the 2,509 libraries whose construction was funded by Andrew Carnegie.