USGS · 14206241

TUALATIN RIVER

USGS · 14206241LIVE

TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR

WASHINGTON COUNTY, OR45.5001°N, -122.9912°W Updated 17 hr ago

FLOW RATE

131cfs

AIR TEMP

67°F

WIND

6mph N

FISH INDEX

81SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

131cfs 20.6% vs avg

Optimal band: 228–308 cfs

PERIOD HIGH

3,516cfs

PERIOD LOW

83cfs

RUNNABLE

last 1 year in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

19.8in

-26% vs normal

19.78 in of precipitation so far this year, 26% below the 30-year normal of 26.84 in for this point in the season.

YTD Total

19.8in

This year so far

Normal to Date

26.8in

30-yr average

Typical Range

19.9–34.0in

10th–90th pct YTD

Departure

-26%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 3.64" · normal 6.77" (3.1–10.5)

Jan

Feb: 4.69" · normal 5.22" (2.3–7.8)

Feb

Mar: 5.02" · normal 5.91" (3.2–9.5)

Mar

Apr: 3.40" · normal 4.45" (2.6–6.5)

Apr

May: 1.02" · normal 2.75" (0.6–4.6)

May

Jun: 2.01" · normal 1.61" (1.0–2.6)

Jun

Jul: 0.00" (so far)· normal 0.43" (0.0–0.9)

Jul

Aug: normal 0.53" (0.0–1.1)

Aug

Sep: normal 1.71" (0.1–3.6)

Sep

Oct: normal 4.15" (1.3–7.5)

Oct

Nov: normal 7.00" (3.0–10.1)

Nov

Dec: normal 7.98" (4.2–11.3)

Dec

Baseline 1991–2020 · Source: Open-Meteo01:37 PM

Your History · TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR

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Station Location

45.5001, -122.9912

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

Site #14206241·USGS

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