How high is the Wf Of Nb Chicago River at Northbrook IL right now?

The Wf Of Nb Chicago River at Northbrook IL is currently flowing at 5 cubic feet per second with a gage height of 0.91 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Wf Of Nb Chicago River at Northbrook IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 41th percentile compared to the long-term historical record at this gauge.

Is the Wf Of Nb Chicago River at Northbrook IL at flood stage?

No — the gage height is 6.09 feet below the NWS flood-stage threshold of 7.0 feet.

What is the historical median flow for the Wf Of Nb Chicago River at Northbrook IL on June 11?

The long-term median discharge for this date is 6 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 3 to 105 cfs.

Where is the Wf Of Nb Chicago River at Northbrook IL stream gauge located?

The Wf Of Nb Chicago River at Northbrook IL stream gauge is operated by the USGS in Cook County, IL. USGS site number 05535500 (coordinates 42.1383, -87.8347).

Wf Of Nb Chicago River at Northbrook IL

USGS Site No: 05535500 • Cook County, IL

Wf Of Nb Chicago River at Northbrook IL is currently at 5 cfs (Normal — 41th percentile for this date) . Gage height: 0.91 ft.

Reading from 1 week ago

CFS Discharge

0.91

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	3
25th	Low threshold	4
50th (Median)	Normal (median)	6	Today: 5 cfs
75th	High threshold	18
95th	Very High threshold	105

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	6	0.92
May 27, 2026	7	0.96
May 26, 2026	10	1.01
May 25, 2026	15	1.11
May 24, 2026	37	1.44
May 23, 2026	5	0.89
May 22, 2026	5	0.90
May 21, 2026	6	0.91
May 20, 2026	6	0.93
May 19, 2026	8	0.97
May 18, 2026	16	1.10
May 17, 2026	5	0.90
May 16, 2026	6	0.92
May 15, 2026	5	0.91
Apr 20, 2026	77	2.03
Apr 19, 2026	77	2.04
Apr 18, 2026	164	3.23
Apr 17, 2026	117	2.53
Apr 16, 2026	134	2.84
Apr 15, 2026	199	3.66
Apr 14, 2026	54	1.61
Apr 13, 2026	22	1.19
Apr 12, 2026	18	1.12
Apr 11, 2026	21	1.17
Apr 10, 2026	33	1.37
Apr 9, 2026	16	1.07
Apr 8, 2026	17	1.10
Apr 7, 2026	20	1.16
Apr 6, 2026	29	1.31
Apr 5, 2026	39	1.45

Station Information

USGS Site No: 05535500
State: IL
County: Cook County
Coordinates: 42.1383, -87.8347
Drainage Area: 12 mi²
Datum (ft): 637.8
HUC Code: 07120003

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 6.0 ft
Flood Stage: 7.0 ft
Moderate Flood: 8.0 ft
Major Flood: 8.5 ft

Currently 6.09 ft below flood stage.

Recent Extremes

Max discharge: 199 cfs

Apr 15, 2026
Min discharge: 2 cfs

Feb 7, 2026
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

North Branch Chicago River at Deerfield, IL
1.3 mi · 3 cfs

Normal
Skokie River Near Highland Park, IL
2.4 mi · 1 cfs

Very Low
Des Plaines River Near Des Plaines, IL
4.4 mi · 286 cfs

Normal
Mc Donald Creek Near Mount Prospect, IL
5.0 mi · 2 cfs

Normal
Des Plaines River at Lincolnshire, IL
6.1 mi · 121 cfs

Low