National Weather Service Advanced Hydrologic Prediction Service

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Weather Forecast Office Portland, OR

Northwest River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (PDT)

Datum: NGVD29

Metadata

NOTE: Forecasts for the Nehalem River near Vernonia are issued as needed during times of high water, but are not routinely available.

Return to Area Map

Flood Categories (in feet)

Major Flood Stage:	15
Moderate Flood Stage:	0
Flood Stage:	12
Action Stage:	11
Low Stage (in feet):	-9999

Historic Crests
(1) 19.10 ft on 12/03/2007
(2) 14.60 ft on 12/09/2015
(3) 13.42 ft on 11/20/2012
(4) 12.50 ft on 11/25/2016
(5) 12.40 ft on 12/07/2015
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.50 ft on 11/25/2016
(2) 14.60 ft on 12/09/2015
(3) 12.40 ft on 12/07/2015
(4) 13.42 ft on 11/20/2012
(5) 11.01 ft on 03/30/2012
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 3.10 ft on 08/24/2018
(2) 3.20 ft on 09/08/2020
(3) 3.50 ft on 10/16/2022
Show More Low Water Records

Zoom Level:16

	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

If you notice any errors in the below information, please contact our Webmaster
18	expect widespread major flooding in and near Vernonia, several feet deep in some low-lying parts of town. Flooding at this level is comparable to the floods of February 1996 and December 2007. The areas of the city most susceptible to flooding include the central part near Bridge Street between Madison and Adams Avenues, along with east town near Alder, Cherry, and Elm Streets and Pebble Creek Road. Flooding is also likely south of Vernonia near the intersection of Highway 47 and Timber Road.
16.5	expect major flooding in Vernonia, especially in the central part of town near Bridge Street and Madison, Jefferson, and Adams Avenues, along with the east part of town near Alder, Cherry, and Elm Streets. Also expect flooding south of town near the intersection of Hwy 47 and Sheely Creek Road. Flooding at this level is 1 to 2 feet below the depths experienced in February 1996 and December 2007.
15	expect significant flooding of the lower areas of Vernonia, with some flooding of buildings beginning at this level. Flooding at this level is 2 to 3 feet below the highest levels in the February 1996 and December 2007 floods.
13.5	expect minor flooding of lower areas in and near Vernonia. Some roads near the river may be flooded. High flows on Rock Creek may increase the extent of flooding.
12	expect minor flooding of low-lying areas in and near Vernonia.

About This Location

Latitude: 45.806944° N, Longitude: 123.281944° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	12 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	Not Available	Not Available	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	640	652	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 Vernonia

Additional Information

USGS Precipitation - tabular data for past 7 days
10-day Forecast/Trend, Northwest River Forecast Center

Resources

Hydrologic Resources

Additional Resources

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
Portland Weather Forecast Office
5241 NE 122nd Avenue
Portland, OR 97230-1089
(503) 261-9246
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Page last modified: 2-Nov-2020 7:27 PM

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