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The second-most populous city in Oregon, Eugene had a population of 176,654 as of the 2020 United States census [10] and it covers city area of 44.21 sq mi (114.5 km 2 ). The Eugene-Springfield metropolitan statistical area is the second largest in Oregon after Portland. [11] In 2022, Eugene's population was estimated to have reached 179,887.
Trewartha climate types of Oregon. According to the Köppen climate classification, most of Western Oregon has a warm-summer Mediterranean climate (or Csb type), which features warm, dry summers, and wet winters with frequent overcast and cloudy skies. Eastern Oregon falls into the cold semi-arid climate (or BSk type), which features drier weather.
Willamette River. Willamette Valley basin. The Willamette Valley ( / wɪˈlæmɪt / ⓘ wil-AM-it) is a 150-mile (240 km) long valley in Oregon, in the Pacific Northwest region of the United States. The Willamette River flows the entire length of the valley and is surrounded by mountains on three sides: the Cascade Range to the east, the Oregon ...
Eugene set records for total rainfall over the weekend, which was dominated by steady rain and a trace of snowfall in the southern Willamette Valley.
Much of the precipitation is received in the form of snow which accumulates in higher elevations from October through April. [9] The rain and snow melt drain into the McKenzie, Santiam, and Willamette rivers, which flow from the forest and provide high-quality drinking water to Eugene, Salem, Corvallis, and Albany. [citation needed]
While the high desert is somewhat dry, it is only arid relative to Western Oregon. The region averages 15 inches (380 mm) of annual rainfall; the Alvord Desert, however, receives only 7 inches (180 mm) of rain each year. Contrary to its name, most of the high desert is not dry enough to truly qualify as desert, and biologically, most of the region is classified as shrubland or steppe .
In Eugene, the combination of cold temperatures and precipitation can transform the city into a winter wonderland, albeit one that comes with its own set of challenges.
The Willamette Valley flood of 1996 was part of a larger series of floods in the Pacific Northwest of the United States which took place between late January and mid-February 1996. It was Oregon 's largest flood event in terms of fatalities and monetary damage during the 1990s. The floods spread beyond Oregon's Willamette Valley, extending west ...