USGS · 12150800

SNOHOMISH RIVER

USGS · 12150800LIVE

SNOHOMISH RIVER NEAR MONROE, WA

SNOHOMISH COUNTY, WA47.8309°N, -122.0485°W Updated 10 hr ago

FLOW RATE

2,669cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

2,669cfs 45.6% vs avg

Optimal band: 3,137–4,244 cfs

PERIOD HIGH

15,449cfs

PERIOD LOW

2,669cfs

RUNNABLE

39%

last 30 day in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

33.5in

≈ normal

33.48 in of precipitation so far this year — about average for this point in the season (normal 35.79 in).

YTD Total

33.5in

This year so far

Normal to Date

35.8in

30-yr average

Typical Range

29.1–45.5in

10th–90th pct YTD

Departure

-6%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 6.28" · normal 8.72" (6.1–11.6)

Jan

Feb: 4.51" · normal 5.92" (3.0–8.3)

Feb

Mar: 11.70" · normal 7.03" (4.0–11.4)

Mar

Apr: 4.08" · normal 5.85" (2.8–8.7)

Apr

May: 2.71" · normal 4.20" (2.5–5.9)

May

Jun: 3.89" · normal 3.56" (1.4–5.7)

Jun

Jul: 0.31" (so far)· normal 1.57" (0.3–3.2)

Jul

Aug: normal 1.86" (0.4–3.8)

Aug

Sep: normal 3.72" (0.8–6.8)

Sep

Oct: normal 7.12" (3.8–11.4)

Oct

Nov: normal 9.81" (5.1–13.3)

Nov

Dec: normal 8.37" (5.6–12.5)

Dec

Baseline 1991–2020 · Source: Open-Meteo10:04 AM

Your History · SNOHOMISH RIVER NEAR MONROE, WA

Track your history

Station Location

47.8309, -122.0485

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC

Site #12150800·USGS

Create a free account to save favorites, set flow alerts, and track conditions