Milwaukie, Oregon in the context of Clackamas, Oregon

Johnson Creek is a 25-mile (40 km) tributary of the Willamette River in the Portland metropolitan area of the U.S. state of Oregon. Part of the drainage basin of the Columbia River, its catchment consists of 54 square miles (140 km) of mostly urban land occupied by about 180,000 people as of 2012. Passing through the cities of Gresham, Portland, and Milwaukie, the creek flows generally west from the foothills of the Cascade Range through sediments deposited by glacial floods on a substrate of basalt. Though polluted, it is free-flowing along its main stem and provides habitat for salmon and other migrating fish.

Prior to European settlement, the watershed was heavily forested and was used by Native Americans of the Chinook band for fishing and hunting. In the 19th century, non-Native American settlers cleared much of the land for farming, and the stream is named for one of these newcomers, William Johnson, who in 1846 built a water-powered sawmill along the creek. By the early 20th century, a rail line parallel to the stream encouraged further residential and commercial development. As urban density increased in the floodplain, seasonal floods grew more damaging. In the 1930s the Works Progress Administration of the federal government lined the lower 15 miles (24 km) of Johnson Creek with rock to control the floods. Despite this, the creek flooded 37 times between 1941 and 2006. Since the 1990s, regional planners have tried to reduce flooding by controlling stormwater runoff, creating stream meanders, reducing erosion, replacing impervious surfaces, and protecting riparian buffers.

Dark Horse Comics is an American comic book, graphic novel, and art book publisher founded in Milwaukie, Oregon, by Mike Richardson in 1986. The company was created using funds earned from Richardson's chain of Portland, Oregon, comic book shops known as Pegasus Books and founded in 1980.

Dark Horse Comics has emerged as the fourth-largest comic publishing company in the United States of America. Dividing profits with artists and writers, as well as supporting artistic and creative rights in the comic book industry, Dark Horse Comics has become a strong proponent of publishing licensed material that often does not fit into mainstream media. Several titles include: Sin City, Hellboy, Buffy the Vampire Slayer, 300, Ninja Gaiden, and Star Wars.