National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the North Central River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

About this graph

Forecasts for the Thorn Creek at Thornton are issued as needed during times of high water, but are not routinely available.

Return to Area Map

Downstream Gauge

Zoom Level:15

Flood Categories (in feet)

Major Flood Stage:	15.5
Moderate Flood Stage:	14
Flood Stage:	9
Action Stage:	7.5
Low Stage (in feet):	2.5

Historic Crests
(1) 17.06 ft on 06/14/1981
(2) 16.87 ft on 11/28/1990
(3) 16.24 ft on 07/18/1996
(4) 16.00 ft on 07/13/1957
(5) 15.95 ft on 12/03/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.95 ft on 05/09/2021
(2) 12.07 ft on 05/18/2020
(3) 11.41 ft on 04/30/2020
(4) 11.13 ft on 01/11/2020
(5) 10.08 ft on 10/27/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.85 ft on 10/05/1994
(2) 1.94 ft on 09/27/1995
(3) 2.16 ft on 10/16/1999
(4) 2.48 ft on 10/10/2020
(5) 2.53 ft on 08/21/2017
Show More Low Water Records

	Gauge Location	Disclaimer
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.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
23	Chicago & Eastern Illinois Railroad tracks are threatened near Glenwood.
21	I-94 may be threatened in South Holland.
20	Structures may be threatened along Clyde Avenue, 173rd Street, and 173rd Place in South Holland.
19	I-294/I-80 onramps may be threatened west of the creek south of South Holland. Residential structures may be threatened along Everett Avenue, Cregier Avenue, and Vollbrecht Road in South Holland. Clyde Avenue, 173rd Street, and 173rd Place may be threatened in South Holland.
18.5	170th Street may be threatened in South Holland. Industrial structures may be threatened along Bernice Road in South Holland.
18	Margaret Street threatened in Thornton.
17.5	Residential structures may be threatened along Kimbark Avenue, University Avenue, and 173rd Street in South Holland. Everett Avenue, Cregier Avenue, and Vollbrecht Road may be threatened in South Holland.
17	Kimbark Avenue, University Avenue, and 173rd Street may be threatened in South Holland. Thorn Creek Diversion Tunnel reaches capacity.
16	Residential structures threatened along Margaret Street in Thornton.
15.5	Structures threatened at Glenwood Academy. Residences threatened along Park Drive in Glenwood.
15	Industrial structures threatened south of Margaret Street in Thornton.
14.5	Park Drive threatened in Glenwood. Industrial parking lots threatened south of Margaret Street in Thornton.
13.5	Chicago Heights Glenwood Road threatened in Glenwood. Residential parking lots threatened along Maragaret Street in Thornton.
13	Parking lots threatened at Glenwood Academy.
12	Structures threatened along Glenwood Thornton Road north of Glenwood.
11.5	Glenwood Thornton Road threatened north of Glenwood.
11	187th Street threatened in Glenwood.
9	Water begins to be diverted through Thorn Creek Diversion Tunnel.
8	Athletic fields are inundated at Glenwood Academy.
7	Water overflows low-lying banks in Glenwood, Thornton, and South Holland.

Low Water Impacts

If you notice any errors in the below information, please contact our Webmaster

1.5	River nears zero flow.
2.5	Approximate stage of the 1-in-10 annual chance flow (7-day average).

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Thornton

Additional Information

How much forecast precipitation was used for the current river forecast?
USGS Streamflow Duration Hydrograph
How low could the river get?

Collaborative Agencies

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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