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King County Flood Warning Center issues Phase 3 flood alert for Snoqualmie River – moderate flooding possible


Natural Resources and Parks
Public Affairs

King County Flood Warning Center issues Phase 3 flood alert for Snoqualmie River – moderate flooding possible


The King County Flood Warning Center has issued a Phase 3 flood alert for the Snoqualmie River, as another storm with heavy rainfall strikes the region and sends river flows higher.


King County’s Flood Warning Center has issuedrsz_kcfcd_21 a Phase 3 flood alert for the Snoqualmie River, with flooding of varied depths possible within the Snoqualmie Valley and an increased risk of road closures.

As of 7 a.m. on Sunday, Nov. 14, the sum of the Snoqualmie River’s three forks was flowing at 21,220 cubic feet per second (CFS), easily surpassing the Phase 3 flood alert threshold of 20,000 CFS for the river. At these flows, At these flows, flooding of varied depths could occur across the Snoqualmie Valley, with floodwaters possibly leading to road closures.

The Flood Warning Center opened at 2:30 a.m. on Sunday, Nov. 14, to coordinate King County’s response to rising river levels – the result of a second atmospheric river to strike the region over the past 48 hours.

Flood Warning Center employees are monitoring stream gauges and weather reports to provide updated information on river conditions as necessary. Find 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 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