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King County Flood Warning Center opens as more rain brings another minor flood threat to Snoqualmie River


The King County Flood Warning Center opened at 11:45 a.m. on Thursday, Nov. 5, to monitor potential minor flooding from heavy rainfall along the Snoqualmie River.


For the second consecutive day, heavy rain across fcd_color_logoeastern King County has led to potential minor flooding along the Snoqualmie River, and the King County Flood Warning Center has opened to monitor conditions and ensure public safety.

The Flood Warning Center opened at 11:45 a.m. on Thursday, Nov. 5, in response to rising flows along the Snoqualmie River. As of 11:45 a.m., the sum of the Snoqualmie River’s three forks was flowing at 12,840 cubic feet per second (CFS), well past the Phase 2 flood alert threshold of 12,000 CFS.

At these flows, only minor flooding in low-lying areas along the Snoqualmie River could be expected.

Flood Warning Center employees operating remotely as part of COVID-19 safety precautions will monitor stream gauges and weather reports to provide updated information on river conditions as necessary. Real-time river level information is available online at

The Flood Warning Center also opened during the morning hours of Wednesday, Nov. 4, when rainfall brought flows along the Snoqualmie River up to a minor flood phase. Conditions improved throughout the day, and the Flood Warning Center closed late in the afternoon on Nov. 4.

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 gauge 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