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Chehalis River at Centralia, WA (CENW1)


Data Type




Inundation Levels
NAVD88 Stage

179.5179.5
Record Crest: 178.1 ft
178.0178.0
177.0177.0
176.0176.0

Major Flooding Begins

175.0175.0
174.0174.0
173.0173.0

Moderate Flooding Begins

172.0172.0
171.0171.0
170.0170.0
169.0169.0

Minor Flooding Begins

168.0168.0
167.0167.0

Near Flooding Begins

166.0166.0
165.0165.0
164.0164.0

Below Flooding Begins

* = Extended rating
Weather Forecast Office Seattle, WA Northwest River Forecast Center
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Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
155.3 ft at 03/19/2024 03:00:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
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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.

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Map Overlays

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
Show More Historic Crests

(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

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Flood Impacts Collapse
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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.
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Additional Information Collapse
Chehalis River Basin Flood Authority's Early Warning System: https://lewiscountywa.gov/departments/community-development/chehalis-river-basin-flood-authority/
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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 7:34 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.