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A Snohomish Regional Fire & Rescue crew found a man in a small aluminum boat without paddles or a headlamp Tuesday evening in the midst of raging floodwaters on the Skykomish River, which is known ...
The Stillaguamish River in Snohomish County reached 21.34 feet (6.50 m) at Arlington, setting a new record high. [1] The river inundated the community of Silvana [1] and cut off portions of State Route 530. [9]
The National Weather Service on Tuesday issued flood warnings in areas north and east of Seattle and across a large swath of the Olympic Peninsula. Atmospheric river brings heavy rain, flooding to ...
As a fire hose of rain, known as an atmospheric river, continued in western Washington and Oregon, small streams and rivers became raging torrents posing significant threats to lives and property ...
The lower Snohomish River was a site of major industry during the 20th century that contaminated the area with various pollutants, including oil and fuel products from former mills and factories. An ore smelter operated by ASARCO contaminated soil and groundwater near the Snohomish River with arsenic. [9]
Flooding in the Walla Walla River watershed was also extensive. The largest city in the area, Walla Walla, was protected from flooding on Mill Creek which was placed in a deep channel through the city following flooding in 1931. On either side of the city, the creek overflowed its banks to wash out roads, inundate fields, and damage buildings.
The Culmback Dam is able to discharge water through an inverted-bell spillway that has a capacity of 62,000 cubic feet (1,800 m 3) per second, [2] which is sufficient to handle the 100-year flood flow of the Sultan River, which is calculated at 47,000 cubic feet (1,300 m 3) per second.
They are issued on fewer than 4% of days per year on average, but are responsible for more than 80% of all flood-related damage and 40% of all flood-related deaths, research from the WPC shows.