MEDIAN FLOW RATE · 7 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
21.9in
≈ normal
21.92 in of precipitation so far this year — about average for this point in the season (normal 22.81 in).
YTD Total
21.9in
This year so far
Normal to Date
22.8in
30-yr average
Typical Range
17.4–28.6in
10th–90th pct YTD
Departure
-4%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.63" · normal 2.69" (1.1–4.2)
Feb: 0.56" · normal 2.36" (1.0–4.3)
Mar: 5.66" · normal 3.25" (1.8–4.8)
Apr: 4.91" · normal 4.51" (2.9–6.6)
May: 2.69" · normal 4.71" (2.5–7.1)
Jun: 5.41" · normal 4.28" (2.6–7.0)
Jul: 1.05" (so far)· normal 3.70" (1.8–6.8)
Aug: normal 2.87" (1.5–4.1)
Sep: normal 3.19" (1.2–6.5)
Oct: normal 3.45" (1.7–6.0)
Nov: normal 3.42" (1.5–5.6)
Dec: normal 2.50" (1.5–4.0)
Baseline 1991–2020 · Source: Open-Meteo04:44 PM
Your History · SANGAMON RIVER AT LAKE DECATUR, IL
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Station Location
39.8275, -88.9566Loading map…
DATA · USGS · NOAA · NWS
Site #05573500·USGS
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