MEDIAN FLOW RATE · 1 YEAR
2,543cfs 9.3% vs avg
Optimal band: 2,402–3,250 cfs
PERIOD HIGH
27,413cfs
PERIOD LOW
1,248cfs
RUNNABLE
29%
last 1 year in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
35.8in
≈ normal
35.76 in of precipitation so far this year — about average for this point in the season (normal 33.73 in).
YTD Total
35.8in
This year so far
Normal to Date
33.7in
30-yr average
Typical Range
0.0–60.9in
10th–90th pct YTD
Departure
+6%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 6.87" · normal 7.78" (0.0–15.0)
Feb: 8.00" · normal 6.66" (0.0–13.5)
Mar: 10.35" · normal 7.36" (0.0–16.8)
Apr: 4.64" · normal 6.01" (0.0–11.6)
May: 2.68" · normal 3.30" (0.0–7.2)
Jun: 3.14" · normal 2.58" (0.0–5.0)
Jul: 0.08" (so far)· normal 0.84" (0.0–2.0)
Aug: normal 0.90" (0.0–2.4)
Sep: normal 2.47" (0.0–5.8)
Oct: normal 6.66" (0.0–13.2)
Nov: normal 9.34" (0.0–15.8)
Dec: normal 9.22" (0.0–17.0)
Baseline 1991–2020 · Source: Open-Meteo09:19 AM
Your History · LEWIS RIVER AT ARIEL, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
66°
53°
THU
73°
50°
FRI
78°
51°
SAT
78°
52°
SUN
81°
46°
MON
85°
51°
TUE
80°
47°
FISH INDEX
Temperature
Ideal
Wind
Calm
Pressure
Stable
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:24 AM
SUNSET
09:04 PM
15H 40M OF DAYLIGHT10H 40M REMAINING
MOON PHASE
Full Moon
98% illuminated
PEAK ACTIVITY
Station Location
45.9517, -122.5640Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-01 10:24 UTC
Site #14220500·USGS
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