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King County Flood Warning Center closes as flows stabilize on Snoqualmie, Tolt rivers


King County’s Flood Warning Center closed 2:30 p.m. on Sunday, Nov. 4, following an 11-hour opening to monitor high flows along the Snoqualmie and Tolt rivers. Flood Warning Center crews will continue to monitor river gages and weather forecasts.


The King County Flood Warning Center closed at 2:30 p.m.fcd_color_2018 on Sunday, Nov. 4, following a half-day opening to monitor high flows on the rain-swollen Snoqualmie and Tolt rivers. 

The Flood Warning Center opened at 3:30 a.m. on Sunday, Nov. 4, after heavy rain in the Cascade Mountains brought the Snoqualmie and Tolt rivers into a minor Phase 2 flood alert level. 

Additional rain brought the Snoqualmie River up to a higher Phase 3 flood alert level, with flooding in low-lying areas of the Snoqualmie Valley. Flood flows have subsided in the upper Snoqualmie watershed and are slowly making their way downstream. 
While the heavy rainfall that led to the flooding has ended, King County employees will continue to monitor stream gages and weather reports as the high flows make their way downstream. 

Additional rainfall later this weekend could bring a new round of minor flooding to King County rivers. Employees will provide updated information on river conditions as necessary. Real-time river level information is available online at

During river flooding events, King County serves as a clearinghouse for information on flood conditions, operating a recorded message center with continuous updates of river gage readings and flood phases and other related information. Reach the Flood Warning Center at 206-296-8200 or 1-800-945-9263. Interpreter assistance in multiple languages is available.
King County offers everyone free access to KC Flood Alerts, an automated system that allows subscribers to receive customized alerts of potential flooding for any or all of King County’s seven major river systems.

Immediate notifications about pending high water are sent to email, smart phone text or voicemail, providing subscribers with the maximum amount of warning about potential high water.

Find the KC Flood Alerts link at This website is a valuable preparedness resource, with all of the latest information about river levels and road conditions, plus weather reports and other critical links.

Questions or assistance with flooding on smaller streams or urban drainage problems can be called in to 206-477-4811 during business hours, or 206-477-8100 after hours or on weekends.

Problems on County maintained roads can be reported by calling 206-477-8100 or 1-800-KC-ROADS.
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The King County Flood Control District is a special purpose government created to provide funding and policy oversight for flood protection projects and programs in King County. The Flood Control District’s Board is composed of the members of the King County Council. The Water and Land Resources Division of the King County Department of Natural Resources and Parks develops and implements the approved flood protection projects and programs. Information is available at