USGS · 05578000

SANGAMON RIVER

USGS · 05578000LIVE

SANGAMON RIVER AT PETERSBURG, IL

PETERSBURG, IL40.0133°N, -89.8383°W Updated 17 hr ago

FLOW RATE

2,558cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

2,558cfs 51.8% vs avg

Optimal band: 169–229 cfs

PERIOD HIGH

9,522cfs

PERIOD LOW

57cfs

RUNNABLE

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

22.6in

≈ normal

22.63 in of precipitation so far this year — about average for this point in the season (normal 21.87 in).

YTD Total

22.6in

This year so far

Normal to Date

21.9in

30-yr average

Typical Range

16.0–29.4in

10th–90th pct YTD

Departure

+4%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.70" · normal 2.26" (1.1–3.5)

Jan

Feb: 0.39" · normal 2.15" (0.7–3.7)

Feb

Mar: 6.70" · normal 3.02" (1.7–4.3)

Mar

Apr: 5.16" · normal 4.47" (2.9–6.5)

Apr

May: 2.12" · normal 4.63" (2.4–7.0)

May

Jun: 5.22" · normal 4.43" (2.2–7.1)

Jun

Jul: 1.34" (so far)· normal 3.55" (1.4–5.4)

Jul

Aug: normal 3.05" (1.4–4.5)

Aug

Sep: normal 3.21" (1.3–6.0)

Sep

Oct: normal 3.15" (1.5–5.1)

Oct

Nov: normal 3.16" (1.2–5.6)

Nov

Dec: normal 2.27" (1.3–4.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo04:45 PM

Your History · SANGAMON RIVER AT PETERSBURG, IL

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Station Location

40.0133, -89.8383

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DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC

Site #05578000·USGS

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