The difference between #2 & 3, and #8 & 9 was about 15 minutes, 20 max!

For other uses, see.

[7] Authorities also warned drivers that as little as a foot of floodwaters can sweep a car away. I-84 is under water in NE Oregon due to heavy rain, mild temperatures and rapid snow melt. Although 150 homes were destroyed, telephoned warnings prompted an immediate evacuation and Ione residents escaped to high ground. The floodwaters carried rich volcanic and glacial soil from Eastern Washington, which was deposited across the valley floor when the waters subsided. Columbia River at Vancouver: 30.8 feet on 6/1/1948, 31.0 feet on 6/13/1948 [28] As many as 90% of the Kalapuya may have died as a result of an epidemic of "fever and ague" that hit the area between 1830 and 1833. Joint U.S.–British occupancy, in effect since the Treaty of 1818, ended in 1846 with the Oregon Treaty. Summers are characterized by warm, sunny afternoons with little or no humidity, and cool evenings. The bridge in Thorn Hollow, Oregon, collapsed and was washed away by the floods, according to a video shared by the East Oregonian on its official Twitter and Facebook accounts.
There were 3 deaths caused by the flooding.

Eugene, at the southern end of the valley, is 425 feet (130 m) above sea level and receives 46 inches per year. Origin, extent, and thickness of Quaternary geologic units in the Willamette Valley, Oregon [U.S. Geological Survey Professional Paper 1620]. Santiam River at Jefferson - Maximum discharge, 197,000 feet3/s Dec. 22, 1964, gage height, 24.22 feet For many basins in Oregon, the flood peaks during this winter event remain the record. US Dept of Commerce Glide and a stretch of Highway 138 near the Archie Creek Fire near Diamond Lake also could be vulnerable to debris washed down from steep, burned-out areas, according to the weather service. Flooding has closed roads and led to evacuations… Read Full Article. The lake gradually drained away, leaving layered sedimentary soils on the valley floor to a height of about 180 to 200 feet (55 to 61 m) above current sea level throughout the Tualatin, Yamhill and Willamette valleys. Without vegetation to hold the soil in place, flooding can produce mud and debris flows. Record Stages: The rising water closed about 200 … Subscribe to Oregonian/OregonLive newsletters and podcasts for the latest news and top stories. Market data provided by Factset. Third, the period of snow was followed by a deep freeze, with freezing rain, frost, and frozen ground.

The river floodplains contained extensive wetlands, stands of willow, alder, and cottonwood, and gallery forests. PORTLAND, Ore. (KOIN) — Flood advisories, watches and warnings are in effect for a large portion of the state, especially the Willamette Valley, as thunderstorms roll through.

The valley may be loosely defined as the broad plain of the Willamette, bounded on the west by the Oregon Coast Range and on the east by the Cascade Range. Flash flood watches cover a swath of land extending through parts of Hood River, Multnomah, Clackamas, Marion, Linn, Lane, Douglas, Coos, Jackson and Klamath counties for parts of Thursday. Places such as the southern Oregon town of Glide, parts of Oregon 138 near the Archie Creek fire and the area around Diamond Lake could also see debris flows, the weather service said. Several rivers, especially in the northern Willamette Valley, set new record stages. Tualatin River at West Linn - Maximum discharge, 26,400 feet3/s Feb. 10, 1996, gage height, 18.32 feet The Columbia River at Vancouver crest at 30 feet, the highest stage since the late 1800s, and the discharge was about 1 million cubic feet per second for almost a month. Winters are consistently wet and cloudy, and often foggy, but quite mild. The Willamette Valley is prone to periodic floods.

The rain may cause flash flooding and debris flows in the Riverside, Beachie Creek, Lionshead and Holiday Farm fire areas. Only about 15 minutes separated the first rainwater in Willow Creek at Heppner and the flood crest. Alsea River near Tidewater - Maximum discharge, 41,800 feet3/s Dec. 22, 1964, gage height, 27.44 feet A storm system is poised to bring rain showers to the region over the next two days, helping clear out wildfire smoke. Molalla River at Canby - Maximum discharge, 43,600 feet3/s Dec. 22, 1964, gage height, 26.76 feet Dozens of people have been rescued and one woman is missing after severe flooding in eastern Oregon stranded residents and closed highways. Historically, the Willamette Valley forests were mostly an oak savanna—tall grasslands with scattered Garry oaks and groves of coast Douglas-fir. In this Aug. 18 photo, an air tanker drops retardant as the LNU Lightning Complex fires tear through the Spanish Flat community in unincorporated Napa County, Calif. Two unusual weather phenomena combined to create some of the most destructive wildfires the West Coast states have seen in modern times.


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