The Columbia River is totally uncontrolled by man-made devices.
 The Columbia's highest recorded flow, measured at The Dalles, was 1,240,000 cubic feet per second (35,000 m3/s) in June 1894, before the river was dammed
On July 1, 2003, Christopher Swain of Portland, Oregon, became the first person to swim the Columbia River's entire length, to raise public awareness about the river's environmental health

