MEDIAN FLOW RATE · 30 DAY
1,603cfs 137.4% vs avg
Optimal band: 2,239–3,029 cfs
PERIOD HIGH
8,478cfs
PERIOD LOW
293cfs
RUNNABLE
19%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
19.0in
≈ normal
19.04 in of precipitation so far this year — about average for this point in the season (normal 20.65 in).
YTD Total
19.0in
This year so far
Normal to Date
20.6in
30-yr average
Typical Range
14.0–26.9in
10th–90th pct YTD
Departure
-8%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.42" · normal 2.15" (1.0–3.5)
Feb: 0.12" · normal 2.09" (0.7–3.4)
Mar: 4.08" · normal 3.00" (1.6–4.7)
Apr: 4.87" · normal 4.34" (2.7–6.5)
May: 1.26" · normal 4.67" (2.5–7.4)
Jun: 7.28" · normal 4.27" (2.2–7.4)
Jul: 0.02" (so far)· normal 3.61" (1.6–5.3)
Aug: normal 3.01" (1.6–4.3)
Sep: normal 3.08" (1.3–6.0)
Oct: normal 3.15" (1.4–5.9)
Nov: normal 2.94" (1.2–5.3)
Dec: normal 2.29" (1.4–4.3)
Baseline 1991–2020 · Source: Open-Meteo01:16 AM
Your History · MACKINAW RIVER NEAR GREEN VALLEY, IL
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Weather Conditions
WEATHER CONDITIONS
TODAY
90°
74°
THU
94°
74°
FRI
92°
73°
SAT
90°
71°
SUN
84°
72°
MON
79°
67°
TUE
79°
64°
FISH INDEX
Temperature
Too Hot
Wind
Light
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:32 AM
SUNSET
08:32 PM
15H 0M OF DAYLIGHT18H 18M REMAINING
MOON PHASE
Waning Gibbous
95% illuminated
Station Location
40.4547, -89.6062Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 02:14 UTC
Site #05568000·USGS
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