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Weather Forecast Office Portland, OR

Northwest River Forecast Center

Hydrograph

River at a Glance

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Toutle River at Tower Road near Silver Lake

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About this graph

Tabular Data (UTC)

Tabular Data (PDT)

Datum: NAVD88

Metadata

NOTE: The reference level, or vertical datum, for this gage has been updated to NAVD88. That means the stage heights will now be reported from that reference level which will give the water level as height above mean sea level. All flood stages have been changed accordingly.

NOTE: Forecasts for the Toutle River at Tower Road near Silver Lake are issued routinely year-round.

Return to Area Map

Upstream Gauge

Flood Categories (in feet)

Major Flood Stage:	140
Moderate Flood Stage:	0
Flood Stage:	137
Action Stage:	135
Low Stage (in feet):	-9999

Historic Crests
(1) 145.01 ft on 12/03/1982
(2) 142.53 ft on 01/05/1983
(3) 141.89 ft on 02/08/1996
(4) 141.73 ft on 01/08/1983
(5) 141.61 ft on 12/16/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 139.01 ft on 12/09/2015
(2) 134.07 ft on 01/07/2009
(3) 131.07 ft on 12/03/2007
(4) 134.85 ft on 11/07/2006
(5) 141.89 ft on 02/08/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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
140	expect major bank erosion and areas of flooding along the Toutle River.
137	expect significant bank erosion and some areas of minor flooding along the Toutle.

About This Location

Latitude: 46.335000° N, Longitude: 122.840833° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	137 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	137	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	Not Available	Not Available	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 Tower Road near Silver Lake

Additional Information

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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