MEDIAN FLOW RATE · 1 YEAR
31cfs 28.3% vs avg
Optimal band: 17–23 cfs
PERIOD HIGH
1,073cfs
PERIOD LOW
7cfs
RUNNABLE
10%
last 1 year in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
22.6in
≈ normal
22.6 in of precipitation so far this year — about average for this point in the season (normal 21.46 in).
YTD Total
22.6in
This year so far
Normal to Date
21.5in
30-yr average
Typical Range
16.4–26.4in
10th–90th pct YTD
Departure
+5%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.26" · normal 1.37" (0.8–2.2)
Feb: 0.45" · normal 1.64" (0.5–2.6)
Mar: 2.56" · normal 2.62" (1.1–5.0)
Apr: 7.89" · normal 4.54" (2.8–7.0)
May: 2.42" · normal 5.06" (2.8–8.1)
Jun: 6.85" · normal 4.98" (2.4–7.5)
Jul: 1.18" (so far)· normal 3.71" (1.5–6.0)
Aug: normal 3.93" (1.2–7.6)
Sep: normal 3.93" (1.7–6.9)
Oct: normal 2.88" (1.0–4.7)
Nov: normal 2.23" (0.9–4.2)
Dec: normal 1.71" (0.8–2.9)
Baseline 1991–2020 · Source: Open-Meteo01:41 AM
Your History · Walnut Creek near Hartwick, IA
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Weather Conditions
WEATHER CONDITIONS
TODAY
85°
68°
FRI
88°
68°
SAT
81°
64°
SUN
82°
65°
MON
83°
65°
TUE
84°
67°
WED
85°
66°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:43 AM
SUNSET
08:46 PM
15H 3M OF DAYLIGHT
MOON PHASE
Waning Crescent
31% illuminated
Station Location
41.8350, -92.3863Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #05452200·USGS
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