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Mackinaw River near Green Valley water level

River gauge, Mackinaw River, Illinois, United States

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Right now

Normal for mid-October

Water level

13.84ft Steady over the last 24 hours

Flow
99.9 cfs
20 30 Highest onrecord 29.18 ft

History

History
131415ftOct 13Oct 14Oct 16Oct 17Oct 19131415ftOct 13Oct 16Oct 19
13141516ftSep 20Sep 27Oct 4Oct 12Oct 1913141516ftSep 20Oct 4Oct 19
152025ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026152025ftOct 2025Apr 2026Oct 2026
152025ftJanMarMayJulSepNov2026152025ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The Mackinaw River near Green Valley is at 13.84 ft, in the normal range for mid-October.

That puts it 0.52 ft above the median of 13.32 ft for mid-October, based on 31 years of readings. A year ago it stood at 12.95 ft (+0.89 ft).

The level has held steady over the past 24 hours. In the last month it has stayed between 13.80 ft and 14.18 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 31 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
13.32 ft0.52 ft above the median for this date
Normal for this date
12.97 ft – 15.00 ft8 years in 10 fall in this range (31 years of records)
Same day last year
12.95 ft+0.89 ft
Lowest and highest in 30 days
13.80 ft – 14.18 ft
Lowest and highest in 12 months
12.91 ft – 25.51 ft
Highest on record
29.18 ftDecember 31, 2015

Floating and fishing near Mackinaw River near Green Valley

Normal flows mean predictable rapids and good access at most put-ins.

Highest crests on record

RankLevelDate
129.18 ftDecember 31, 2015
228.48 ftApril 20, 2013
328.44 ftJanuary 16, 2005
428.29 ftSeptember 16, 1993
528.19 ftMay 4, 2019
627.94 ftSeptember 17, 2008
727.65 ftJanuary 26, 2024
827.62 ftMay 14, 2002
927.14 ftJuly 12, 2015
1026.83 ftMay 26, 1995

Weather at the gauge

No rain in the last 3 days.

19 Mon 69° 38° – Wind 7 mph
20 Tue 72° 43° – Wind 7 mph
21 Wed 73° 52° – Wind 6 mph
22 Thu 75° 55° – Wind 6 mph
23 Fri 76° 56° – Wind 10 mph
24 Sat 75° 55° – Wind 13 mph
25 Sun 68° 57° – Wind 13 mph

Forecast: Open-Meteo

Sunrise 07:14 AM Sunset 06:14 PM Daylight 11 hr First quarter 59%

Map

Other gauges on the Mackinaw River

Gauge Level Compared with normal 24 hours Distance
Mackinaw River near HudsonRiver gauge, Mackinaw River 12.76 ft No reference yet ±0 32 mi
Mackinaw River near CongervilleRiver gauge, Mackinaw River 1.16 ft Normal ±0 22 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Illinois River at Kingston MinesRiver gauge, Illinois River 5.85 ft Normal +0.09 ft 11 mi
Illinois River at Copperas CreekRiver gauge, Illinois River 5.38 ft Normal +0.03 ft 15 mi
Farm Creek at FarmdaleRiver gauge, Farm Creek 0.64 ft Very low −0.01 ft 16 mi
Fondulac Creek near East PeoriaRiver gauge, Fondulac Creek 1.36 ft Very low −0.01 ft 16 mi
Mason Tazewell Drainage D at Cr2350e near TopekaRiver gauge, Mason Tazewell Drainage D 15.44 ft Very high ±0 18 mi
Salt Creek near GreenviewRiver gauge, Salt Creek 1.34 ft Normal −0.04 ft 23 mi
Kickapoo Creek at WaynesvilleRiver gauge, Kickapoo Creek 2.46 ft Normal −0.02 ft 29 mi
Sangamon River near OakfordRiver gauge, Sangamon River 3.44 ft Normal −0.04 ft 30 mi

Questions and answers

How does the Mackinaw River near Green Valley compare with last year?

It is 0.89 ft higher than on the same day last year, when the reading was 12.95 ft.

What is a normal level for the Mackinaw River near Green Valley in mid-October?

The median for mid-October is 13.32 ft. In 8 years out of 10 the reading falls between 12.97 ft and 15.00 ft, based on 31 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Mackinaw River near Green Valley today?

On Oct 19, 2026, 08:45 AM CDT, the water level was 13.84 ft. Steady over the last 24 hours.

Is Mackinaw River near Green Valley rising or falling?

Steady over the last 24 hours. Down 0.05 ft over the last 7 days.

Is the level of Mackinaw River near Green Valley normal?

Normal for mid-October. Compared with 31 years of daily readings for this time of year.

What is the highest water level ever recorded at Mackinaw River near Green Valley?

The highest level on record is 29.18 ft on December 31, 2015.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:05568000 (Agency page)
Coordinates
40.45467, -89.60617 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 13.84 ft 2026-10-19 13:45 Provisional
Flow 99.9 cfs 2026-10-19 13:45 Provisional

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How to cite

U.S. Geological Survey: Mackinaw River near Green Valley (usgs:05568000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/illinois/mackinaw-river-near-green-valley

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.