How high is the Thorn Creek at Glenwood, IL right now?

The Thorn Creek at Glenwood, IL is currently flowing at 23 cubic feet per second with a gage height of 2.59 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Thorn Creek at Glenwood, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 33th percentile compared to the long-term historical record at this gauge.

Is the Thorn Creek at Glenwood, IL at flood stage?

No — the gage height is 5.91 feet below the NWS flood-stage threshold of 8.5 feet.

What is the historical median flow for the Thorn Creek at Glenwood, IL on June 11?

The long-term median discharge for this date is 28 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 17 to 163 cfs.

Where is the Thorn Creek at Glenwood, IL stream gauge located?

The Thorn Creek at Glenwood, IL stream gauge is operated by the USGS in Cook County, IL on the Thorn Creek. USGS site number 05536215 (coordinates 41.5302, -87.6226).

Thorn Creek at Glenwood, IL

USGS Site No: 05536215 • Thorn Creek • Cook County, IL

Thorn Creek at Glenwood, IL on the Thorn Creek is currently at 23 cfs (Normal — 33th percentile for this date) . Gage height: 2.59 ft.

Reading from 1 week ago

Downstream on Thorn Creek ↓

Thorn Creek at Thornton, IL

CFS Discharge

2.59

Gage Height (ft)

Normal

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	17
25th	Low threshold	21
50th (Median)	Normal (median)	28	Today: 23 cfs
75th	High threshold	43
95th	Very High threshold	163

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	23	2.59
May 27, 2026	27	2.62
May 26, 2026	24	2.60
May 25, 2026	29	2.65
May 24, 2026	49	2.81
May 23, 2026	23	2.58
May 22, 2026	23	2.59
May 21, 2026	24	2.60
May 20, 2026	26	2.62
May 19, 2026	33	2.69
May 18, 2026	62	2.89
May 17, 2026	24	2.60
May 16, 2026	26	2.62
May 15, 2026	26	2.62
Apr 20, 2026	43	2.76
Apr 19, 2026	50	2.82
Apr 18, 2026	72	2.99
Apr 17, 2026	54	2.86
Apr 16, 2026	69	2.98
Apr 15, 2026	52	2.84
Apr 14, 2026	54	2.85
Apr 13, 2026	53	2.85
Apr 12, 2026	47	2.79
Apr 11, 2026	50	2.83
Apr 10, 2026	64	2.94
Apr 9, 2026	63	2.93
Apr 8, 2026	71	2.99
Apr 7, 2026	81	3.05
Apr 6, 2026	109	3.23
Apr 5, 2026	193	3.71

Station Information

USGS Site No: 05536215
State: IL
County: Cook County
Coordinates: 41.5302, -87.6226
Drainage Area: 25 mi²
Datum (ft): 610.9
HUC Code: 07120003

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 7.0 ft
Flood Stage: 8.5 ft
Moderate Flood: 11.0 ft
Major Flood: 12.5 ft

Currently 5.91 ft below flood stage.

Recent Extremes

Max discharge: 458 cfs

Mar 7, 2026
Min discharge: 13 cfs

Jul 23, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Butterfield Creek at Flossmoor, IL
1.5 mi · 1 cfs

Very Low
Deer Creek Near Chicago Heights, IL
1.8 mi · 5 cfs

Normal
Thorn Creek at Thornton, IL
2.7 mi · 41 cfs

Normal
Lansing Ditch Near Lansing, IL
4.8 mi · 0 cfs

Very Low
Calumet Union Drainage Canal Near Markham, IL
5.1 mi · 13 cfs

Very High