Wynoochee River above Black Creek near Montesano, WA

Grays Harbor County, Washington · USGS gauge 12037400 · NWS MNSW1 · Wynoochee River flood status · Washington river levels

Nearby: river levels near Satsop

Is Wynoochee River above Black Creek near Montesano, WA flooding right now?

Wynoochee River above Black Creek near Montesano, WA measured 27.02 ft on 2026-09-11 00:45:00 UTC. That observation was 15.5 ft below its 42.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

27.02 ft

as of 2 hours ago

Streamflow

186 cfs

data refreshed 15 min ago

Minor flooding here begins at 42.5 ft, with major flooding at 44.5 ft. The highest crest on record was 45.02 ft on Mon, Dec 10, 1956.

Flood forecast

NWS forecast, issued 11 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

Category	Stage	Current distance
Action	39 ft	12.0 ft below
Minor flood	42.5 ft	15.5 ft below
Moderate flood	43.5 ft	16.5 ft below
Major flood	44.5 ft	17.5 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

Stage	Date
45.02 ft	1956-12-10
20.54 ft	1956-12-10
20.21 ft	1997-03-19
20.19 ft	1968-01-19
20.12 ft	1961-01-16

Nearby gauges

Gauge	Distance	County
Chehalis River near Montesano, WA	4.2 mi	Grays Harbor County
Satsop River near Satsop, WA	7.6 mi	Grays Harbor County
Chehalis River near Satsop, WA	8.2 mi	Grays Harbor County
Schafer Creek near Grisdale, WA	13.4 mi	Grays Harbor County
Chehalis River at Porter, WA	16.8 mi	Grays Harbor County

Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast