MEDIAN FLOW RATE · 30 DAY
13,793cfs 2.0% vs avg
Optimal band: 12,164–16,457 cfs
PERIOD HIGH
17,851cfs
PERIOD LOW
10,852cfs
RUNNABLE
74%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
24.0in
≈ normal
24.03 in of precipitation so far this year — about average for this point in the season (normal 26.83 in).
YTD Total
24.0in
This year so far
Normal to Date
26.8in
30-yr average
Typical Range
19.1–35.0in
10th–90th pct YTD
Departure
-10%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 4.01" · normal 6.61" (3.4–9.5)
Feb: 6.43" · normal 5.12" (2.7–7.7)
Mar: 5.85" · normal 5.74" (3.2–8.8)
Apr: 3.67" · normal 4.52" (2.5–6.4)
May: 1.30" · normal 2.86" (0.9–4.6)
Jun: 2.77" · normal 1.79" (1.0–3.0)
Jul: 0.00" (so far)· normal 0.50" (0.1–1.0)
Aug: normal 0.60" (0.1–1.1)
Sep: normal 1.78" (0.1–3.4)
Oct: normal 4.24" (1.6–6.7)
Nov: normal 6.94" (3.1–10.3)
Dec: normal 7.62" (4.2–10.5)
Baseline 1991–2020 · Source: Open-Meteo03:04 PM
Your History · WILLAMETTE RIVER AT PORTLAND, OR
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Station Location
45.5175, -122.6692Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #14211720·USGS
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