USGS · 12150400

SNOQUALMIE RIVER

USGS · 12150400LIVE

SNOQUALMIE RIVER AT DUVALL, WA

DUVALL, WA47.7432°N, -121.9879°W

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

—cfs

No flow data available

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

32.5in

≈ normal

32.45 in of precipitation so far this year — about average for this point in the season (normal 35.93 in).

YTD Total

32.5in

This year so far

Normal to Date

35.9in

30-yr average

Typical Range

29.1–45.5in

10th–90th pct YTD

Departure

-10%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 6.39" · normal 8.77" (6.2–11.6)

Jan

Feb: 4.61" · normal 6.02" (3.0–9.1)

Feb

Mar: 11.14" · normal 7.05" (4.0–11.4)

Mar

Apr: 4.56" · normal 5.86" (2.9–8.7)

Apr

May: 2.51" · normal 4.20" (2.5–6.0)

May

Jun: 3.00" · normal 3.52" (1.4–5.4)

Jun

Jul: 0.24" (so far)· normal 1.58" (0.3–3.2)

Jul

Aug: normal 1.86" (0.5–3.8)

Aug

Sep: normal 3.69" (0.8–6.7)

Sep

Oct: normal 7.22" (3.8–11.4)

Oct

Nov: normal 9.84" (5.1–13.3)

Nov

Dec: normal 8.47" (5.6–12.5)

Dec

Baseline 1991–2020 · Source: Open-Meteo10:03 AM

Your History · SNOQUALMIE RIVER AT DUVALL, WA

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Station Location

47.7432, -121.9879

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DATA · USGS · NOAA · NWS

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