Summary
Total streamflow across the
Snoqualmie River
was last observed at
11,290
cfs, and is expected to yield approximately
22,393
acre-ft of water today; about 117%
of normal.
Average streamflow for this time of year is
9,668 cfs,
with recent peaks last observed
on
2015-01-06 when daily discharge volume was observed at
85,200 cfs.
Maximum discharge along the river is currently at the
Snoqualmie River Near Carnation
reporting a streamflow rate of 7,620 cfs.
This is also the highest stage along the Snoqualmie River, with a gauge stage of
48.39 ft at this location.
This river is monitored from 2 different streamgauging stations along the Snoqualmie River, the highest being situated at an altitude of 114 ft, the
Snoqualmie River Near Snoqualmie.
River Details
| Last Updated | 2025-12-25 |
| Discharge Volume | 22,393 ACRE-FT |
| Streamflow |
11,290.0 cfs
+60.0 cfs (+0.53%) |
| Percent of Normal | 116.78% |
| Maximum |
85,200.0 cfs
2015-01-06 |
| Seasonal Avg | 9,668 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Snoqualmie River Near Snoqualmie
USGS 12144500 |
3670 cfs | 6.5 ft | 5.46 | |||||
|
Snoqualmie River Near Carnation
USGS 12149000 |
7620 cfs | 48.39 ft | -1.68 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Snoqualmie River is a 45-mile (72 km) long river in King County and Snohomish County in the U.S. state of Washington. The river's three main tributaries are the North, Middle, and South Forks, which drain the west side of the Cascade Mountains near the town of North Bend and join near the town of Snoqualmie just above the Snoqualmie Falls. After the falls the river flows north through rich farmland and the towns of Fall City, Carnation, and Duvall before meeting the Skykomish River to form the Snohomish River near Monroe. The Snohomish River empties into Puget Sound at Everett. Other tributaries of the Snoqualmie River include the Taylor River and the Pratt River, both of which enter the Middle Fork, the Tolt River, which joins at Carnation, and the Raging River at Fall City.
Many of the Snoqualmie River's headwaters originate as snowmelt within the Alpine Lakes Wilderness. On August 8, 2007, U.S. Representative Dave Reichert (WA-08), King County Executive Ron Sims, and others announced a proposal to expand the Alpine Lakes Wilderness to include the valley of the Pratt River, a tributary of the Middle Fork, near the town of North Bend. The proposal would also give the Pratt River National Wild and Scenic River status.