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King County Flood Warning Center closes as river levels recede, and will monitor flows with more heavy rain expected


The King County Flood Warning Center closed at 2 p.m. on Friday, June 10, as river levels receded from their peak flows following a strong late spring rainstorm that led to isolated minor flooding on the Snoqualmie River.


The King County Flood Warning Center closedfcd_color_logo at 2 p.m. on Friday, June 10, after more than 12 hours of operation to monitor minor flooding from heavy rainfall. Flood Warning Center employees will monitor river conditions as another strong rainstorm could impact the region this weekend.

The Flood Warning Center opened at 12:45 a.m. on Friday, June 10, to monitor minor flooding along the Snoqualmie River, the result of a powerful late spring rainstorm that dropped more than 1 inch of rain across eastern King County.

While staying comfortably within the Phase 2 flood alert levels indicating minor flooding and few impacts to property or roads, the Snoqualmie River’s peak flow on Friday morning – approximately 14,920 cubic feet per second at about 2:15 a.m. – is the highest flow recorded on the Snoqualmie River in June since 1985.

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. 
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.

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.

Sign up for flood warnings and alerts
King County Flood Control District

Doug Williams, Department of Natural Resources and Parks, 206-477-4543

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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