MEDIAN FLOW RATE · 1 DAY
4.66cfs 82.0% vs avg
Optimal band: 4–6 cfs
PERIOD HIGH
5.73cfs
PERIOD LOW
4.55cfs
RUNNABLE
100%
last 1 day in band
Gauge Height
1.67ft
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
22.4in
≈ normal
22.45 in of precipitation so far this year — about average for this point in the season (normal 25.71 in).
YTD Total
22.4in
This year so far
Normal to Date
25.7in
30-yr average
Typical Range
18.9–33.5in
10th–90th pct YTD
Departure
-13%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.81" · normal 3.27" (1.5–4.9)
Feb: 1.13" · normal 2.94" (1.6–4.3)
Mar: 6.02" · normal 4.06" (2.4–6.2)
Apr: 3.65" · normal 5.20" (2.7–7.4)
May: 3.52" · normal 4.90" (2.5–7.5)
Jun: 4.81" · normal 3.85" (1.9–6.3)
Jul: 1.52" (so far)· normal 3.55" (1.5–5.7)
Aug: normal 2.92" (0.9–5.4)
Sep: normal 3.07" (0.8–5.7)
Oct: normal 3.35" (1.2–6.0)
Nov: normal 3.76" (1.9–5.8)
Dec: normal 3.20" (1.8–5.4)
Baseline 1991–2020 · Source: Open-Meteo06:39 UTC
Your History · CASEY FORK AT MOUNT VERNON, IL
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Weather Conditions
WEATHER CONDITIONS
TODAY
89°
69°
MON
91°
69°
TUE
86°
68°
WED
87°
70°
THU
87°
72°
FRI
90°
74°
SAT
89°
72°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:42 AM
SUNSET
08:19 PM
14H 37M OF DAYLIGHT
MOON PHASE
Waning Crescent
7% illuminated
Station Location
38.2867, -88.8722Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 05:30 UTC
Site #05595820·USGS
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