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Hydrograph River at a Glance Download
North Branch Chicago River at Niles Stage (ft)Flow (kcfs)USGS--Water Resources of the United StatesNILI2(plotting HGIRG) Graph Created (5:39AM Jan 24, 2022)Flood Stage is 10 ft
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Tabular Data (CST)
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NOTE: Graphical forecasts are not available for the North Branch Chicago River at Niles. During times of high water, forecast crest information can be found in the text products.
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Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at Chicago (Pulaski Rd)
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11
Flood Stage: 10
Action Stage: 7
Low Stage (in feet): 1

Historic Crests
(1) 12.13 ft on 09/14/2008
(2) 12.12 ft on 04/18/2013
(3) 11.35 ft on 08/14/1987
(4) 10.63 ft on 02/21/1997
(5) 10.26 ft on 05/18/2020
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(P): Preliminary values subject to further review.

Recent Crests
(1) 10.26 ft on 05/18/2020
(2) 8.89 ft on 04/30/2020
(3) 8.14 ft on 03/28/2020
(4) 9.28 ft on 05/01/2019
(5) 8.11 ft on 06/22/2018
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(P): Preliminary values subject to further review.

Low Water Records
(1) 0.85 ft on 08/05/1993
(2) 0.92 ft on 07/06/2001
(3) 0.99 ft on 09/21/1994
(4) 1.02 ft on 11/06/2007
(5) 1.17 ft on 10/01/2014
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For more information on your flood risk go to

Zoom Level:15
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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13.5 Howard Avenue is threatened in Niles.
12 Widespread flooding of wooded areas along the river including numerous trails and recreation areas.
11 Structures are threatened near the river in Niles.
10 N Riverside Drive, W Harts Road, and W Jarvis Avenue are threatened near the river in Niles.
8 Low-lying areas in Bunker Hill Woods, Caldwell Woods, and multiple golf courses are inundated.
7 Sections of the North Branch Trail are inundated near Cicero Avenue in Chicago. Trails are threatened at Tam O'Shanter Golf Course in Niles.
6.5 Water overtops low-lying banks in Niles.
6 Water overtops low-lying banks near the gauge.
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1.0 River nears zero flow.
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Latitude: 42.012222° N, Longitude: 87.795833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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Page last modified: 2-Nov-2020 7:29 PM
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