WYNOOCHEE RIVER

RIVER LEVELS
December 25, 2024
47.43, -123.57


TOTAL RIVER DISCHARGE

Total streamflow across the Wynoochee River was last observed at 9,880 cfs, and is expected to yield approximately 19,597 acre-ft of water today; about 193% of normal. River levels are high. Average streamflow for this time of year is 5,128 cfs, with recent peaks last observed on 2020-01-24 when daily discharge volume was observed at 21,710 cfs.

Maximum discharge along the river is currently at the Wynoochee River Above Black Creek Nr Montesano reporting a streamflow rate of 4,010 cfs. This is also the highest stage along the Wynoochee River, with a gauge stage of 32.22 ft at this location. This river is monitored from 3 different streamgauging stations along the Wynoochee River, the highest being situated at an altitude of 632 ft, the Wynoochee River Near Grisdale.

The Wynoochee River is a 42-mile-long river in western Washington, United States. It originates in the Olympic Mountains and flows northwest into Wynoochee Lake, which is created by the Wynoochee Dam. The river then continues west and eventually flows into the Chehalis River near Aberdeen. The Wynoochee River is primarily used for hydroelectric power generation, with the Wynoochee Dam being the main source of power. The reservoir created by the dam is also used for recreational activities such as fishing, camping, and boating. The river has a rich history, with the Wynoochee Dam being built in the 1970s to provide power to the growing population of western Washington. The river also supports various agricultural activities along its banks. Despite the dam's benefits, it has had negative impacts on the river's ecosystem, including a decline in fish populations.

Last Updated 2024-12-25
Discharge Volume 19,597 ACRE-FT
Streamflow 9,880.0 cfs
+1240.0 cfs (+14.35%)
Percent of Normal 192.66%
Maximum 21,710.0 cfs
2020-01-24
Seasonal Avg 5,128 cfs

YEAR OVER YEAR DISCHARGE (CFS)

Streamflow Conditions
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Wynoochee River Near Grisdale
USGS 12035400
2500 cfs 4.08 ft 47.93
Wynoochee River Above Save Creek Near Aberdeen
USGS 12036000
3370 cfs 7.74 ft 17.01
Wynoochee River Above Black Creek Nr Montesano
USGS 12037400
4010 cfs 32.22 ft -1.47
History of the River

The Wynoochee River is a 60-mile (97 km) long river located in the Olympic Peninsula in the U.S. state of Washington. A tributary of the Chehalis River, the Wynoochee River rises in the Olympic Mountains within the Olympic National Park and flows generally south. Its drainage basin is 218 square miles (560 km2) in area. The name Wynoochee comes from the Lower Chehalis placename /xʷənúɬč/, meaning "shifting".

       

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