USGS · 05439500

SOUTH BRANCH

USGS · 05439500LIVE

SOUTH BRANCH KISHWAUKEE RIVER NR FAIRDALE IL

DEKALB COUNTY, IL42.1106°N, -88.9007°W Updated 10 hr ago

FLOW RATE

1,295cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

1,295cfs 36.4% vs avg

Optimal band: 50–68 cfs

PERIOD HIGH

4,328cfs

PERIOD LOW

21cfs

RUNNABLE

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

20.8in

≈ normal

20.8 in of precipitation so far this year — about average for this point in the season (normal 20.09 in).

YTD Total

20.8in

This year so far

Normal to Date

20.1in

30-yr average

Typical Range

14.5–24.0in

10th–90th pct YTD

Departure

+4%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.25" · normal 1.93" (1.0–2.9)

Jan

Feb: 0.34" · normal 1.85" (0.7–3.3)

Feb

Mar: 3.71" · normal 2.55" (1.2–4.0)

Mar

Apr: 7.18" · normal 4.30" (2.5–6.0)

Apr

May: 0.85" · normal 4.63" (1.9–7.3)

May

Jun: 6.03" · normal 4.09" (2.2–5.7)

Jun

Jul: 1.43" (so far)· normal 3.58" (1.4–5.5)

Jul

Aug: normal 3.47" (1.7–5.7)

Aug

Sep: normal 3.16" (1.3–6.1)

Sep

Oct: normal 3.04" (1.2–5.0)

Oct

Nov: normal 2.43" (0.8–4.2)

Nov

Dec: normal 2.16" (1.0–3.9)

Dec

Baseline 1991–2020 · Source: Open-Meteo10:03 AM

Your History · SOUTH BRANCH KISHWAUKEE RIVER NR FAIRDALE IL

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Station Location

42.1106, -88.9007

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

Site #05439500·USGS

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