USGS · 414119087340101

BIG MARSH RIVER

USGS · 414119087340101LIVE

BIG MARSH AT POND C AT SEEP 2 AT SOUTH DEERING, IL

CHICAGO, IL41.6886°N, -87.5669°W

AIR TEMP

80°F

WIND

5mph NE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

—cfs

No flow data available

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

23.2in

≈ normal

23.18 in of precipitation so far this year — about average for this point in the season (normal 21.79 in).

YTD Total

23.2in

This year so far

Normal to Date

21.8in

30-yr average

Typical Range

15.5–26.3in

10th–90th pct YTD

Departure

+6%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.81" · normal 2.44" (1.3–3.9)

Jan

Feb: 0.58" · normal 2.16" (0.8–3.5)

Feb

Mar: 4.10" · normal 2.74" (1.6–4.7)

Mar

Apr: 6.26" · normal 4.30" (2.6–6.6)

Apr

May: 0.99" · normal 4.49" (2.1–6.3)

May

Jun: 7.94" · normal 4.07" (2.1–6.6)

Jun

Jul: 1.50" (so far)· normal 3.79" (1.8–5.3)

Jul

Aug: normal 3.90" (2.1–5.6)

Aug

Sep: normal 3.09" (1.2–5.6)

Sep

Oct: normal 3.42" (1.4–6.1)

Oct

Nov: normal 2.85" (1.6–4.7)

Nov

Dec: normal 2.36" (1.2–4.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo00:03 UTC

Your History · BIG MARSH AT POND C AT SEEP 2 AT SOUTH DEERING, IL

Track your history

Sign in to track your sessions at BIG MARSH AT POND C AT SEEP 2 AT SOUTH DEERING, IL — best days, monthly trends, and time on the water.

Station Location

41.6886, -87.5669

Loading map…

DATA · USGS · NOAA · NWS

Site #414119087340101·USGS

Create a free account to save favorites, set flow alerts, and track conditions