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Mill Creek (IL) at Old Mill Creek

Highest listed crest 13.21 ftFlood stage 11.0 ft38 crests since 1966

The Mill Creek (IL) at Old Mill Creek crested above flood stage 26 times among the 38 crests the National Weather Service lists from 1966 to 2020. The highest, 13.21 ft on July 12, 2017, was moderate flooding, 2.21 feet above flood stage.

The gauge

Highest listed crest
13.21 ft
July 12, 2017; 1,890 cubic feet per second
Flood stage
11.0 ft
Major flooding from 15.0 ft
Crests at major
0
26 above flood stage
Most recent flood crest
May 17, 2020
11.84 ft, minor flooding
Location
Lake County
Near Lindenhurst (2.9 mi), Gurnee (3.5 mi), Beach Park (5.1 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Mill Creek (IL) at Old Mill Creek
Action stage10.011Mar 28, 2020The level at which the NWS or its partners begin to take action
Flood stage (minor)11.017May 17, 2020Minimal or no property damage, but possibly some public threat
Moderate flood stage12.09Sep 13, 2019Some inundation of structures and roads near the stream
Major flood stage15.00—Extensive inundation of structures and roads

Every listed crest

38 crests from 1966 to 2020. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mill Creek (IL) at Old Mill Creek, 1966 to 2020 810121416ft Flood stage 11.0 ftMajor 15.0 ft Feb 10, 1966: 11.95 ft, minor flooding; 500 cubic feet per secondMar 11, 1990: 10.94 ft, action stage; 486 cubic feet per secondMar 27, 1991: 11.79 ft, minor flooding; 931 cubic feet per secondNov 29, 1991: 10.26 ft, action stage; 336 cubic feet per secondJun 30, 1993: 12.06 ft, moderate flooding; 1,090 cubic feet per secondFeb 20, 1994: 11.87 ft, minor flooding; 988 cubic feet per secondApr 27, 1995: 11.16 ft, minor flooding; 696 cubic feet per secondMay 20, 1996: 11.94 ft, minor flooding; 1,020 cubic feet per secondFeb 21, 1997: 11.90 ft, minor flooding; 1,000 cubic feet per secondApr 16, 1998: 10.99 ft, action stage; 609 cubic feet per secondApr 23, 1999: 12.21 ft, moderate flooding; 1,160 cubic feet per secondMay 18, 2000: 12.01 ft, moderate flooding; 1,060 cubic feet per secondFeb 25, 2001: 10.34 ft, action stage; 405 cubic feet per secondOct 24, 2001: 10.91 ft, action stage; 581 cubic feet per secondMay 22, 2004: 11.54 ft, minor flooding; 831 cubic feet per secondJan 13, 2005: 10.45 ft, action stage; 436 cubic feet per secondMar 13, 2006: 10.55 ft, action stage; 465 cubic feet per secondAug 20, 2007: 11.60 ft, minor flooding; 770 cubic feet per secondJun 9, 2008: 12.03 ft, moderate flooding; 1,070 cubic feet per secondJun 19, 2009: 13.18 ft, moderate flooding; 1,730 cubic feet per secondMay 13, 2010: 11.98 ft, minor flooding; 963 cubic feet per secondJul 27, 2011: 11.81 ft, minor flooding; 958 cubic feet per secondApr 15, 2012: 9.98 ft, below flood stage; 316 cubic feet per secondApr 15, 2013: 12.98 ft, moderate flooding; 1,700 cubic feet per secondJun 11, 2014: 11.48 ft, minor flooding; 804 cubic feet per secondApr 10, 2015: 11.95 ft, minor flooding; 1,030 cubic feet per secondNov 27, 2015: 11.27 ft, minor flooding; 741 cubic feet per secondJul 12, 2017: 13.21 ft, moderate flooding; 1,890 cubic feet per secondJun 27, 2018: 12.34 ft, moderate flooding; 1,270 cubic feet per secondFeb 7, 2019: 11.15 ft, minor flooding; 788 cubic feet per secondFeb 24, 2019: 10.25 ft, action stage; 523 cubic feet per secondMar 14, 2019: 10.34 ft, action stage; 547 cubic feet per secondMay 9, 2019: 11.52 ft, minor flooding; 901 cubic feet per secondSep 13, 2019: 12.77 ft, moderate flooding; 1,730 cubic feet per secondOct 27, 2019: 10.67 ft, action stage; 617 cubic feet per secondMar 28, 2020: 10.68 ft, action stage; 605 cubic feet per secondApr 30, 2020: 11.77 ft, minor flooding; 1,050 cubic feet per secondMay 17, 2020: 11.84 ft, minor flooding; 1,100 cubic feet per second Highest, 13.21 ft, Jul 12, 2017 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mill Creek (IL) at Old Mill Creek 1960s: 1 1970s: 0 1980s: 0 1990s: 7 2000s: 5 2010s: 11 11 2020s: 2 1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
  3. 12 crests measured on an earlier gauge datum are left out: 12.35 ft on Mar 31, 1960; 11.32 ft on Mar 19, 1962; 11.25 ft on Apr 6, 1965; 11.13 ft on Jun 10, 1967; 12.21 ft on Jun 8, 1969; 12.27 ft on Jun 2, 1970; and more.

Highest crests

Highest listed crests, Mill Creek (IL) at Old Mill Creek
1Jul 12, 201713.21+2.21Moderate1,890
2Jun 19, 200913.18+2.18Moderate1,730
3Apr 15, 201312.98+1.98Moderate1,700
4Sep 13, 201912.77+1.77Moderate1,730
5Jun 27, 201812.34+1.34Moderate1,270
6Apr 23, 199912.21+1.21Moderate1,160
7Jun 30, 199312.06+1.06Moderate1,090
8Jun 9, 200812.03+1.03Moderate1,070
9May 18, 200012.01+1.01Moderate1,060
10May 13, 201011.98+0.98Minor963
11Feb 10, 196611.95+0.95Minor500
12Apr 10, 201511.95+0.95Minor1,030
13May 20, 199611.94+0.94Minor1,020
14Feb 21, 199711.90+0.90Minor1,000
15Feb 20, 199411.87+0.87Minor988
16May 17, 202011.84+0.84Minor1,100
17Jul 27, 201111.81+0.81Minor958
18Mar 27, 199111.79+0.79Minor931
19Apr 30, 202011.77+0.77Minor1,050
20Aug 20, 200711.60+0.60Minor770
21May 22, 200411.54+0.54Minor831
22May 9, 201911.52+0.52Minor901
23Jun 11, 201411.48+0.48Minor804
24Nov 27, 201511.27+0.27Minor741
25Apr 27, 199511.16+0.16Minor696
26Feb 7, 201911.15+0.15Minor788
27Apr 16, 199810.99−0.01Action609
28Mar 11, 199010.94−0.06Action486
29Oct 24, 200110.91−0.09Action581
30Mar 28, 202010.68−0.32Action605
31Oct 27, 201910.67−0.33Action617
32Mar 13, 200610.55−0.45Action465
33Jan 13, 200510.45−0.55Action436
34Feb 25, 200110.34−0.66Action405
35Mar 14, 201910.34−0.66Action547
36Nov 29, 199110.26−0.74Action336
37Feb 24, 201910.25−0.75Action523
38Apr 15, 20129.98−1.02Below flood stage316

The worst floods along the Mill Creek (IL)

For this gauge's highest crests, the other gauges on the Mill Creek (IL) that crested above flood stage within a week.

April 15, 2013: 12.98 ft here, moderate flooding

  • BataviaIL · Apr 18, 2013 · 7.52 ft · Minor

Gauges on the Mill Creek (IL)

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Mill Creek (IL)
Old Mill Creek this gaugeIL11.013.21 ft, Jul 12, 20170
BataviaIL6.59.48 ft, Sep 13, 20080

Other gauges in Lake County

Flood gauges in Lake County
Lincolnshire12.516.55 ft, Jul 13, 20174
Gurnee7.012.09 ft, Jul 16, 20174
Russell7.012.11 ft, Jul 14, 20178
Fox Lake6.08.12 ft, Apr 5, 19606
Lake Villa6.08.90 ft, Jul 4, 19387
Antioch6.08.34 ft, Apr 5, 19606
Deerfield9.512.75 ft, Jul 13, 20170
Highland Park9.010.44 ft, Jul 13, 20170
Lake Forest6.09.09 ft, Jul 12, 20170
Deerfield13.016.84 ft, Jun 10, 19671

Lake County: every hazard · River floods across the country · Illinois

NOAA National Water Prediction Service, gauge OMCI2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.