USGS · 414745087484901

SUMMIT CONDUIT OUTFALL RIVER

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SUMMIT CONDUIT OUTFALL AT SUMMIT, IL

SUMMIT, IL41.7958°N, -87.8136°W

AIR TEMP

76°F

WIND

4mph E

FISH INDEX

81SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

—cfs

No flow data available

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

23.6in

≈ normal

23.61 in of precipitation so far this year — about average for this point in the season (normal 21.32 in).

YTD Total

23.6in

This year so far

Normal to Date

21.3in

30-yr average

Typical Range

15.4–26.8in

10th–90th pct YTD

Departure

+11%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.76" · normal 2.42" (1.1–3.9)

Jan

Feb: 0.64" · normal 2.12" (0.8–3.5)

Feb

Mar: 4.04" · normal 2.79" (1.6–4.9)

Mar

Apr: 6.80" · normal 4.29" (2.6–6.6)

Apr

May: 1.10" · normal 4.58" (2.1–7.1)

May

Jun: 7.36" · normal 4.18" (2.1–6.7)

Jun

Jul: 1.91" (so far)· normal 3.84" (1.8–5.7)

Jul

Aug: normal 3.90" (1.9–5.6)

Aug

Sep: normal 3.16" (1.2–5.6)

Sep

Oct: normal 3.45" (1.4–7.1)

Oct

Nov: normal 2.82" (1.6–4.7)

Nov

Dec: normal 2.37" (1.2–4.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo12:34 AM

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Station Location

41.7958, -87.8136

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