MEDIAN FLOW RATE · 30 DAY
459cfs 34.4% vs avg
Optimal band: 438–592 cfs
PERIOD HIGH
688cfs
PERIOD LOW
445cfs
RUNNABLE
84%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
40.9in
≈ normal
40.89 in of precipitation so far this year — about average for this point in the season (normal 45.38 in).
YTD Total
40.9in
This year so far
Normal to Date
45.4in
30-yr average
Typical Range
34.2–57.1in
10th–90th pct YTD
Departure
-10%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 6.08" · normal 11.36" (6.2–15.8)
Feb: 8.92" · normal 8.77" (4.8–14.2)
Mar: 10.00" · normal 9.07" (5.6–14.4)
Apr: 6.44" · normal 7.35" (3.6–11.0)
May: 3.64" · normal 5.03" (2.1–7.6)
Jun: 5.74" · normal 3.55" (1.8–5.5)
Jul: 0.07" (so far)· normal 0.90" (0.2–1.8)
Aug: normal 1.17" (0.1–2.1)
Sep: normal 3.40" (0.4–7.1)
Oct: normal 8.13" (3.7–13.9)
Nov: normal 12.06" (5.1–16.8)
Dec: normal 12.43" (7.9–18.2)
Baseline 1991–2020 · Source: Open-Meteo03:35 PM
Your History · SANDY RIVER NEAR MARMOT, OR
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Station Location
45.3996, -122.1373Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC
Site #14137000·USGS
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