Major Flood
44.5 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
43.5 ft
Minor Flood
42.5 ft
Action Stage
39 ft
What Floods at Each Level
44.5 ft
the Wynoochee River will cause major flooding in the Wynoochee Valley...with deep and swift flood waters inundating farms...residences...and roads. Damage from erosion could be significant. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Wynoochee River Basin.
43.5 ft
the Wynoochee River will flood much of the low area of the Wynoochee Valley with moderate flooding. Deep and swift flood waters will inundate farms...residential areas...and roads.
42.5 ft
the Wynoochee River will flood much of the low area of the Wynoochee Valley...with deep and swift flood waters inundating farms...residential areas...and roads.
39.5 ft
the Wynoochee River will locally spill over its banks into fields in the Wynoochee Valley. Flooding threatens residences and roads upper part of river.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 9, 1956 | 45.02 ft | 24,500 cfs |
| Dec 10, 1956 | 20.54 ft | 24,500 cfs |
| Mar 18, 1997 | 20.21 ft | 25,600 cfs |
About This Gauge
USGS Site
NWS LID
MNSW1
River
Wynoochee River
County
Grays Harbor, WA
Coordinates
47.0117°N, 123.6542°W
Get Flood Alerts for Wynoochee River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Wynoochee River near Montesano?
The Wynoochee River near Montesano gauge is maintained by USGS (site 12037400) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Wynoochee River near Montesano?
The NWS-defined flood stage for Wynoochee River near Montesano is 42.5 feet. Action stage begins at 39 feet. Moderate flooding starts at 43.5 feet, and major flooding at 44.5 feet.
How do I get alerts when Wynoochee River rises?
Download StormCast free on Google Play, go to River Gauges, and add Wynoochee River near Montesano to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Wynoochee River near Montesano gauge located?
The gauge is located in Grays Harbor County, Washington at coordinates 47.0117°N, 123.6542°W. USGS site number: 12037400. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- 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.