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Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Seattle, WA

Northwest River Forecast Center

Flood Watch

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PST) Datum: NAVD88 Metadata

NOTE: River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast. NOTE: Forecasts for the Skookumchuck River at Centralia are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 191 Moderate Flood Stage: 190 Flood Stage: 189 Action Stage: 187 Low Stage (in feet): 0 Historic Crests (1) 191.03 ft on 02/08/1996 (2) 190.86 ft on 01/10/1990 (3) 190.34 ft on 01/08/2009 (4) 190.18 ft on 01/07/2022 (P) (5) 187.57 ft on 01/06/2015 (P) Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 190.18 ft on 01/07/2022 (P) (2) 187.57 ft on 01/06/2015 (P) (3) 83.76 ft on 02/18/2014 (P) (4) 190.34 ft on 01/08/2009 (5) 85.02 ft on 01/31/2006 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 176.44 ft on 10/17/2015

Zoom Level:16 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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191.5	the Skookumchuck River will cause severe...record flooding in Centralia and the surrounding area. The river will flood most residential areas and roads and cover most of the farmland in the Skookumchuck River valley. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Skookumchuck River Basin. This stage corresponds to a Phase 4 flood in the Lewis County flood warning system.
191	the Skookumchuck River will cause major flooding in Centralia and the surrounding area. The river will flood many roads and residential areas and cover much of the farmland in the Skookumchuck River valley. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Skookumchuck River Basin. This stage corresponds roughly to a Phase 3 flood in the Lewis County flood warning system.
190	the Skookumchuck River will cause moderate flooding in Centralia and the surrounding area. The river will flood many roads and residential areas and cover much of the farmland in the Skookumchuck River valley. This stage corresponds roughly to a Phase 2 flood in the Lewis County flood warning system.
189	the Skookumchuck River in Lewis County will flood several roads and farm lands near Centralia. This stage corresponds roughly to a Phase 2 flood in the Lewis County flood system.
187	the Skookumchuck River in Lewis county will spill into low areas along the river near Centralia. This river level on the Skookumchuck corresponds roughly to a Phase 1 flood in the Lewis County flood system.

About This Location

Latitude: 46.730663° N, Longitude: 122.953704° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 189 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 0.0 ft 189.0 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 100 ft 185 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Centralia

Additional Information

Chehalis River Basin Flood Authority link to Chehalis River Basin Early Warning System: http://lewiscountywa.gov/chehalis-river-basin-flood-authority

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary USGS Streamflow Data USACE real time/archived data query

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Inundation Mapping Locations Snow Information Flood Smart/National Flood Insurance Program

Collaborative Agencies The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. NWS Information National Weather Service Seattle Weather Forecast Office 7600 Sandpoint Way NE Seattle, WA 98115-6349 (206) 526-6087 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities