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This probabilistic forecast is issued by the Northwest River Forecast Center.
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Mapping
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About this graph
Forecasts for the Chehalis River at Centralia are issued routinely year-round.
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Downstream Gauge Downstream Gauge - near Grand Mound
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 175.5
Moderate Flood Stage: 172
Flood Stage: 168.5
Action Stage: 166
Low Stage (in feet): -9999

Historic Crests
(1) 178.10 ft on 12/04/2007
(2) 174.93 ft on 01/07/2022 (P)
(3) 74.78 ft on 12/04/2007
(4) 74.31 ft on 02/09/1996
(5) 73.50 ft on 01/10/1990
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(P): Preliminary values subject to further review.

Recent Crests
(1) 174.93 ft on 01/07/2022 (P)
(2) 65.07 ft on 02/10/2017
(3) 67.86 ft on 12/10/2015 (P)
(4) 62.25 ft on 01/06/2015 (P)
(5) 62.46 ft on 02/18/2014 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 48.00 ft on 09/18/2012
Show More Low Water Records
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
176.7 the Chehalis River in Lewis County will cause severe near record flooding...with deep and swift flood waters inundating farms...residential and business areas...and roads on both sides of I-5...including I-5 and SR 6. Much of Chehalise and Centralia will be flooded. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Chehalis River Basin. This stage corresponds roughly to a Phase 4 flood in the Lewis County flood system.
175.5 the Chehalis River in Lewis County will cause major flooding...inundating residential and commercial areas...farms...and many roads on both sides of I-5...including I-5 and SR 6. Flood waters will be deep and swift in some areas. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Chehalis River Basin. This stage corresponds roughly to a Phase 3 flood in the Lewis County flood system.
173.5 the Chehalis River in Lewis County will cause moderate flooding including Fort Borst Park...residential and commercial areas...farms...and many roads from Chehalis to Centralia. Flood waters begin to inundate SR 6...I-5 ramps at SR 6...Main St Chehalis...and around Plummers and Hayes Lakes. Swift flood waters will cover some roads. This stage corresponds roughly to a Phase 2 flood in the Lewis County flood system.
172 the Chehalis River in Lewis County will cause moderate flooding including Fort Borst Park...farms...and some residential and commercial areas...with water encroaching upon the first floor of some homes and businesses. Flooded roads include SR 6...Florida Ave...Donahue Rd...Airport Rd...Military Rd...and Nick Rd. Swift flood waters will cover some roads. This stage corresponds roughly to a Phase 2 flood in the Lewis County flood system.
170.5 the Chehalis River in Lewis County will flood Riverside Golf Course...farms...and some residential areas around Florida Ave...Donahue Rd...Airport Rd...and Military Rd. Swift flood waters will cover some roads. This stage corresponds roughly to a Phase 1 flood in the Lewis County flood system.
168.5 the Chehalis River in Lewis County will cause shallow flooding of farm lands and some roads. Roads include Airport Rd, Florida Ave in Chehalis and Military Rd in Centralia. This stage corresponds roughly to a Phase 1 flood in the Lewis County flood warning system.
166.5 the Chehalis River in Lewis County will spill over its banks into nearby pasture lands around Chehalis and Centralia.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Chehalis River Basin Flood Authority's Early Warning System: https://lewiscountywa.gov/departments/community-development/chehalis-river-basin-flood-authority/
Collaborative Agencies Collapse
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.
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Page last modified: 2-Nov-2020 7:27 PM
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