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On August 17, 1775, Hezeta became the first to map and record a written description of the entrance to the Columbia River at observed latitude of 46° 11´: "a large bay that I named Bahia de la Asunción. . . ." Hezeta's map names Cavo de San Roque, which corresponds to today's Cape Disappointment (actual latitude 46º 17´), and Cavo Frondoso, which corresponds to Point Adams or Tillamook Head. Hezeta wrote: "These currents and the seething waters [lead me] to believe that [the bay] may be the mouth of some great river or some passage to another sea."
|In August 1805, the Lewis and Clark Expedition crosses the Continental Divide.|
Botanist Thomas Nuttall, part of Nathanial Wyeth expedition to the Pacific Ocean, crossed the Snake River on August 24, 1834, entering what is now Malheur County. From there they traveled through the Blue Mountains toward the Columbia.
In August 1848, following the ratification of the Oregon Treaty, Oregon became a territory of the United States. Seven months later, the first territorial judge, Orville C. Pratt, arrived at Oregon City.
Abigail Scott married Benjamin C. Duniway in August 1853 and settled on Ben's donation claim in Clackamas County. She is remembered as Oregon's "Mother of Equal Suffrage" and "the pioneer Woman Suffragist of the great Northwest."
|On August 2, 1873, a mere month after Henry Failing took office as Portland’s mayor, the largest fire in the city’s history engulfed twenty-two blocks along the Portland waterfront in the vicinity of Southwest Alder Street.
William Lovell Finley—biologist, photographer, writer, Fish and Game Commissioner, and advocate for the protection of wildlife, especially birds—is born on August 9, 1876. His efforts led to the creation of three National Wildlife Refuges in Oregon, and a fourth was named in his honor.
The Second Regiment, Oregon U.S. Volunteer Infantry takes part in the surrender of the Spanish army in Manila on August 13, 1898. The regiment had provided the first U.S. Army unit to land at the Philippines and the first unit to enter the Walled City of Manila. It was the first time that members of the Oregon National Guard fought on foreign soil. When the United States war with Spain ended three days later, the regiment took up provost guard duty, playing the role of police in the city of Manila.
Edison Chiloquin, who earned international attention in 1974 when he refused to accept a $273,000 payment from the federal government as compensation for terminating the Klamath Tribe, is born on August 31, 1923, in the town of Chiloquin.
|Virginia Euwer Wolff, winner of a National Book Award for True Believer, a novel for young readers, is born in Portland on August 25, 1937.
The U.S.S. Astoria, which had delivered the remains of Hirosi Saito, Japan's ambassador to the United States, to Yokohama Harbor, was sunk by Japanese forces at the Battle of Savo Island in August 1942.
The U.S. Maritime Commission formally approves the building of Vanport on August 18, 1942. The site was 650 acres of the Columbia River flood plain west of Denver Avenue and east of the North Pacific railroad line, a location that was roughly equidistant between Kaiser facilities at Swan Island, St. Johns, and Vancouver.
In the early morning hours of August 7, 1959, a parked truck—loaded with two tons of dynamite and over four tons of ammonium nitrate—caught fire outside a supply store on the edge of downtown Roseburg. The resulting explosion, known locally as The Blast, sent a ball of flame and a mushroom cloud of smoke over two thousand feet into the air.
The Kingsmen, the most successful and influential rock and roll band Oregon has produced, disbanded in August 1963. The band’s recording of "Louie Louie" was a nationwide hit in 1964, and it has remained one of the most popular rock songs of all time.
The Oxbow Ridge Fire began on August 20, 1966, caused by road construction workers using equipment on Oxbow Ridge, twenty miles southwest of Eugene. Before the fire was contained a week later, some 42,274 acres had burned, about 66 square miles.
|The first Hood to Coast relay, a nearly 200-mile relay from Timberline Lodge to Pacific City, was held on August 7, 1982.