USGS · 05439000

SOUTH BRANCH

USGS · 05439000LIVE

SOUTH BRANCH KISHWAUKEE RIVER AT DEKALB, IL

DEKALB, IL41.9311°N, -88.7597°W Updated 9 hr ago

FLOW RATE

349cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

349cfs 105.8% vs avg

Optimal band: 76–102 cfs

PERIOD HIGH

566cfs

PERIOD LOW

13cfs

RUNNABLE

23%

last 30 day in band

Precipitation History

Precipitation · YTD

Wet

Wetter than normal

2026 to date

24.4in

+21% vs normal

24.39 in of precipitation so far this year, 21% above the 30-year normal of 20.22 in for this point in the season.

YTD Total

24.4in

This year so far

Normal to Date

20.2in

30-yr average

Typical Range

14.2–24.0in

10th–90th pct YTD

Departure

+21%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.02" · normal 1.98" (1.1–2.9)

Jan

Feb: 0.37" · normal 1.88" (0.8–3.4)

Feb

Mar: 4.61" · normal 2.56" (1.2–3.9)

Mar

Apr: 7.88" · normal 4.30" (2.6–5.8)

Apr

May: 1.30" · normal 4.70" (1.9–7.3)

May

Jun: 6.96" · normal 4.09" (2.1–5.9)

Jun

Jul: 2.24" (so far)· normal 3.55" (1.6–5.2)

Jul

Aug: normal 3.49" (1.9–5.6)

Aug

Sep: normal 3.11" (1.3–6.2)

Sep

Oct: normal 3.14" (1.2–5.3)

Oct

Nov: normal 2.44" (0.9–4.3)

Nov

Dec: normal 2.17" (1.0–3.9)

Dec

Baseline 1991–2020 · Source: Open-Meteo09:44 AM

Your History · SOUTH BRANCH KISHWAUKEE RIVER AT DEKALB, IL

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Station Location

41.9311, -88.7597

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

Site #05439000·USGS

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