USGS · 12137800

SULTAN RIVER

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SULTAN RIVER BELOW DIVERSION DAM NEAR SULTAN, WA

SNOHOMISH COUNTY, WA47.9593°N, -121.7973°W Updated 2 hr ago

FLOW RATE

109cfs

AIR TEMP

65°F

WIND

7mph NNW

FISH INDEX

81SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

109cfs 18.8% vs avg

Optimal band: 92–124 cfs

PERIOD HIGH

1,235cfs

PERIOD LOW

108cfs

RUNNABLE

71%

last 30 day in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

40.1in

-18% vs normal

40.15 in of precipitation so far this year, 18% below the 30-year normal of 48.77 in for this point in the season.

YTD Total

40.1in

This year so far

Normal to Date

48.8in

30-yr average

Typical Range

38.9–61.8in

10th–90th pct YTD

Departure

-18%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 7.15" · normal 12.68" (7.8–17.0)

Jan

Feb: 5.05" · normal 8.58" (4.1–13.1)

Feb

Mar: 14.01" · normal 9.97" (6.0–15.6)

Mar

Apr: 4.60" · normal 7.45" (3.6–10.6)

Apr

May: 3.46" · normal 5.18" (2.7–7.2)

May

Jun: 5.44" · normal 4.19" (2.0–6.2)

Jun

Jul: 0.45" (so far)· normal 1.92" (0.6–3.9)

Jul

Aug: normal 2.18" (0.6–4.2)

Aug

Sep: normal 4.57" (1.0–8.4)

Sep

Oct: normal 9.68" (4.2–14.5)

Oct

Nov: normal 13.57" (7.7–16.9)

Nov

Dec: normal 12.37" (7.8–19.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo01:31 AM

Your History · SULTAN RIVER BELOW DIVERSION DAM NEAR SULTAN, WA

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Station Location

47.9593, -121.7973

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DATA · USGS · NOAA · NWSUPDATED 2026-07-08 00:00 UTC

Site #12137800·USGS

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