MEDIAN FLOW RATE · 1 YEAR
160cfs 37.2% vs avg
Optimal band: 73–99 cfs
PERIOD HIGH
2,685cfs
PERIOD LOW
42cfs
RUNNABLE
14%
last 1 year in band
Precipitation History
Precipitation · YTD
WetWetter than normal
2026 to date
23.7in
+21% vs normal
23.68 in of precipitation so far this year, 21% above the 30-year normal of 19.61 in for this point in the season.
YTD Total
23.7in
This year so far
Normal to Date
19.6in
30-yr average
Typical Range
14.8–26.3in
10th–90th pct YTD
Departure
+21%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.84" · normal 1.42" (0.7–2.3)
Feb: 1.09" · normal 1.47" (0.7–2.1)
Mar: 2.29" · normal 2.44" (1.1–4.3)
Apr: 6.70" · normal 4.10" (2.5–6.2)
May: 3.16" · normal 4.34" (2.6–6.2)
Jun: 6.09" · normal 4.60" (2.7–6.4)
Jul: 2.51" (so far)· normal 3.72" (2.0–4.8)
Aug: normal 3.73" (1.6–6.5)
Sep: normal 3.50" (1.3–5.7)
Oct: normal 2.68" (0.9–5.1)
Nov: normal 2.11" (0.7–3.5)
Dec: normal 1.74" (0.8–2.8)
Baseline 1991–2020 · Source: Open-Meteo01:44 AM
Your History · Yellow River near Ion, IA
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Weather Conditions
WEATHER CONDITIONS
TODAY
84°
69°
FRI
88°
69°
SAT
83°
67°
SUN
82°
62°
MON
83°
65°
TUE
83°
64°
WED
85°
68°
FISH INDEX
Temperature
Warm
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:34 AM
SUNSET
08:45 PM
15H 11M OF DAYLIGHT
MOON PHASE
Waning Crescent
23% illuminated
Station Location
43.1119, -91.2651Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-10 00:00 UTC
Site #05389000·USGS
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