MEDIAN FLOW RATE · 7 DAY
929cfs 54.7% vs avg
Optimal band: 774–1,048 cfs
PERIOD HIGH
929cfs
PERIOD LOW
631cfs
RUNNABLE
75%
last 7 day in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
14.1in
-24% vs normal
14.12 in of precipitation so far this year, 24% below the 30-year normal of 18.71 in for this point in the season.
YTD Total
14.1in
This year so far
Normal to Date
18.7in
30-yr average
Typical Range
15.1–22.7in
10th–90th pct YTD
Departure
-24%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.77" · normal 0.84" (0.4–1.4)
Feb: 0.14" · normal 1.01" (0.4–1.6)
Mar: 1.16" · normal 2.06" (0.8–3.2)
Apr: 4.43" · normal 3.83" (2.0–6.2)
May: 3.25" · normal 4.76" (2.0–7.0)
Jun: 2.91" · normal 5.40" (3.0–8.7)
Jul: 1.46" (so far)· normal 3.15" (1.1–5.0)
Aug: normal 3.63" (1.6–6.2)
Sep: normal 2.91" (0.7–4.8)
Oct: normal 2.47" (0.8–4.7)
Nov: normal 1.69" (0.3–3.3)
Dec: normal 1.10" (0.4–2.0)
Baseline 1991–2020 · Source: Open-Meteo01:11 AM
Your History · Rock River near Rock Valley, IA
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Weather Conditions
WEATHER CONDITIONS
TODAY
86°
62°
MON
89°
67°
TUE
92°
70°
WED
92°
68°
THU
88°
67°
FRI
84°
66°
SAT
90°
67°
FISH INDEX
Temperature
Too Hot
Wind
Calm
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:51 AM
SUNSET
09:07 PM
15H 16M OF DAYLIGHT
MOON PHASE
Last Quarter
64% illuminated
Station Location
43.2151, -96.2950Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-06 00:00 UTC
Site #06483500·USGS
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