Flooding risk continues to grow

Flooding along the Cedar River continues to increase to levels that have not been experienced since 2009. Residents from Renton to Landsburg, and travelers through the valley corridor, should prepare for rising waters to overtop major arterials and sole access roads. This will cut off access to neighborhoods throughout the valley. Expect fast and deep flows which will create dangerous conditions throughout the floodplain.

Do not walk or drive through closed roadways or standing water. Stay off the roads if possible. Follow My Commute to monitor King County road closures and WSDOT Travel Alerts for state route closures.

Free sandbag materials are available 24/7 at the King County Roads facility, 20827 SE Auburn-Black Diamond Rd. in Black Diamond. Limit 25 bags per vehicle. Empty sandbags and sand are available. Shovels are not provided. For a complete list of distribution locations, go to kingcounty.gov/flood.

If you are unable to safely leave your home or a building due to rapidly rising waters, call 9-1-1 for help. Then move to a higher floor or to the roof. Take warm, weatherproof clothing, a flashlight, a mobile phone and a portable radio. Please reach out to neighbors who may not have access to social media or automatic alerts, or who may need assistance with evacuation in the event of a neighborhood being cut off.

Many roads are restricted or closed in the region due to rising water. Stay alert to changing conditions, and never drive around barricades.

  • Closed: State Route 169 from 196th Avenue SE to SE 231st Street
  • Closed: State Route 900 eastbound and westbound from Talus Drive to SE May Valley Road

Other roads in King County are at risk of closing. They include:

  • Byers Road SE off Cedar Grove Road (could cut off access to SE 184th Street, SE 183rd Street, 216th Avenue SE, and 215th Avenue SE)
  • 218th Place SE (aka Pebble Beach Road), off of State Route 169
  • SE 214th Street off of State Route 169
  • SE Bain Road, off of State Route 169
  • Dorre Don Way SE, off of 216th Avenue SE

Check My Commute frequently for current status of King County roads, and WSDOT Travel Alerts for state route closures.

Be ready to protect your health if it floods.

  • Minimize the risk of chemical contamination. Check product labels on automotive products, cleaners, fuels, weed killer, and other household chemicals. If they say Caution, Warning, Danger, or Poison, store them up high, above possible flood levels.
  • Do not allow children to play or wade in flood water.
  • Clean surfaces that may have been contaminated by flood water. Wear close-fitting gloves, eye protection, and boots. Clean first with soap and water, then use a mix of one teaspoon bleach to one gallon of water to disinfect.

More information on flood health risks is available here.

For more information about King County’s Flood Services go to kingcounty.gov/flood, or call the King County Flood Warning Center at 206-296-8200 or 1-800-945-9263 (TTY Relay 711). Servicios de intérprete están disponible bajo solicitud.