びびなび : 西雅图 : (美國) Seattle

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City of Auburn Blog

"Dec. 9, 2025"

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Monitoring River Conditions and Potential Flooding on the White River
A graphic that says Weather Update against a blue background with an icon that looks like clouds and lightning.

The City of Auburn is closely monitoring river conditions as a strong atmospheric river continues to bring heavy rainfall to our region. We are coordinating with the U.S. Army Corps of Engineers (USACE), King County, and the National Weather Service to ensure we have the most current information and can respond quickly as conditions evolve.

USACE has approved Auburn to receive approximately 650 feet of temporary flood-control barriers (Hesco barriers) for potential placement along a section of the White River Trail near the A Street Bridge, directly south of the White River. These barriers arrived on Tuesday morning, and a contractor is preparing to install them if needed. *A portion of Roegner Park will be closed*, along with the White River trail from the Park’s parking lot to the A Street Bridge, as crews assess the situation and complete any flood-control efforts. Neighboring jurisdictions along the White River are taking similar precautions. At this time, we are not anticipating any flooding north of the river.

Because of the back-to-back atmospheric rivers saturating the basin, USACE must release significantly increased flows from Mud Mountain Dam [ https://www.nws.usace.army.mil/Media/News-Releases/Article/4354724/seattle-district-monitors-white-river-as-back-to-back-atmospheric-rivers-threat/ ] on the White River to protect upstream communities and maintain safe reservoir operations. Outflows are forecast to climb rapidly, reaching approximately *12,000 cubic feet per second (cfs) by Wednesday morning*, with high flows expected to persist for several days. These elevated flows may push the White River near the A Street Bridge over its southern bank during *the day on Thursday*, resulting in *localized minor flooding* in the low-lying area immediately adjacent to the trail.

Similarly, increased releases from the Howard Hanson Dam are expected to raise flows on the Green River to between *9,000 and 10,000 cfs* later this week. This may place the river at *“Minor” Flood Stage* at the Auburn gage. We expect to see minor flooding in Isaac Evans Park during the event. Updated inundation mapping and further details will be shared as they become available.

These actions are standard flood-risk-management operations during severe storm events, and while they are precautionary, it is important for residents to remain aware of changing conditions. We encourage the public to stay alert and use extra caution in areas near the river, especially on Thursday, when flows are expected to peak.

If you spot flooding in your area, please let us know via a Service Request on SeeClickFix [ https://www.auburnwa.gov/city_hall/online_citizen_reporting/service_request ] or by calling our non-emergency line at 253-288-2121. If it is an emergency, *please call 911. *

*Flood Safety Tips*

* Avoid walking or driving through standing or moving water -- just a few inches can sweep a vehicle off the roadway.
* Never go around “Road Closed” or “Flooded” signs.
* Keep storm drains near your home clear of leaves and debris.
* Stay informed by monitoring local weather alerts and updates from city and county agencies.
* If you live in a flood-prone area, review your emergency plan and secure outdoor items that could wash away.

We will continue to provide updates as conditions change. Thank you for your cooperation in helping keep our community safe!

*Helpful Resources*

For the latest information, please refer to:


* *National Weather Service Seattle*: Forecasts, river levels, and flood warnings [ https://www.weather.gov/sew/ ]
* *King County Flood Services*: Regional flood alerts and preparedness information [ https://kingcounty.gov/en/dept/dnrp/nature-recreation/environment-ecology-conservation/flood-services ]
* *U.S. Army Corps of Engineers -- Seattle District*: Reservoir and dam flow updates [ https://www.nws.usace.army.mil/Media/News-Releases/Article/4354724/seattle-district-monitors-white-river-as-back-to-back-atmospheric-rivers-threat/ ]
* *City of Auburn Emergency Management*: Local preparedness tips and emergency notifications [ https://www.auburnwa.gov/city_hall/emergency_preparedness ]
* *Auburn River Gages (White & Green Rivers)*: Real-time river level data [ https://waterdata.usgs.gov/monitoring-location/USGS-12113000/#dataTypeId=continuous-00065-1998625418&period=P7D&showFieldMeasurements=true ]
* *Washington State Department of Transportation (WSDOT)*: Road closures and travel impacts [ https://wsdot.com/Travel/Real-time/Map/ ]
* *Regional public information and notification service:* ALERT King County [ https://kingcounty.gov/en/dept/executive-services/health-safety/safety-injury-prevention/emergency-preparedness/alert-king-county ]





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