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Tolt River rises to Phase III flood alert level; King County Flood Warning Center notes moderate flooding

Summary

Persistent rainfall in the Cascade foothills has pushed the Tolt River up to a Phase III flood alert level, with moderate flooding possible in low-lying areas as well as possible road closures.

Story

Persistent rainfall in the Cascade foothills has pushed the Tolt River up to a Phase III flood alert level, with moderate flooding Flood Control Zone District Logo possible in low-lying areas as well as possible road closures. The King County Flood Warning Center, which opened at 5:30 a.m. today, Nov. 28, is also monitoring minor flooding along the Snoqualmie River.

As of 11:30 a.m. the Tolt River at Carnation was just surpassing the Phase III flood alert threshold of 5,000 cubic feet per second (CFS). At these flows, some flooding could occur along the Tolt River upstream of Carnation, including in the San Souci area. Increased floodwater depths and velocities are possible over 353rd Avenue Northeast, and water could possibly come across Tolt River Road Northeast.

Meanwhile, the Snoqualmie River has been at a Phase II flood alert level since about 5:30 a.m. today. As of 11: 30 a.m., the sum of the Snoqualmie River's three forks recorded a flow of 15,490 CFS. The Snoqualmie River reached - and exceeded - these flows earlier in the week with a moderate flood event.

Flood Warning Center employees will monitor stream gages and weather reports, and will provide updated information on river conditions as necessary. Real-time river level information is available online at kingcounty.gov/flood.

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 six 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 kingcounty.gov/flood. 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 206-296-1900 during business hours, or 206-296-8100 after hours or on weekends.

Problems on County maintained roads can be reported by calling 206-296-8100 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 http://www.kingcountyfloodcontrol.org/.