How high is the Illinois River at Morris, IL right now?

The Illinois River at Morris, IL is currently flowing at 5,290 cubic feet per second with a gage height of 5.21 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Illinois River at Morris, IL normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 14th percentile compared to the long-term historical record at this gauge.

Is the Illinois River at Morris, IL at flood stage?

No — the gage height is 10.79 feet below the NWS flood-stage threshold of 16.0 feet.

What is the historical median flow for the Illinois River at Morris, IL on June 11?

The long-term median discharge for this date is 8,070 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 4,600 to unavailable cfs.

Where is the Illinois River at Morris, IL stream gauge located?

The Illinois River at Morris, IL stream gauge is operated by the USGS in Grundy County, IL on the Illinois River. USGS site number 05542500 (coordinates 41.3546, -88.4285).

Illinois River at Morris, IL

USGS Site No: 05542500 • Illinois River • Grundy County, IL

Illinois River at Morris, IL on the Illinois River is currently at 5,290 cfs (Low — 14th percentile for this date) . Gage height: 5.21 ft.

Reading from 1 week ago

Downstream on Illinois River ↓

Illinois River at Marseilles, IL

5,290

CFS Discharge

5.21

Gage Height (ft)

Low

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	4,600
25th	Low threshold	7,110	Today: 5,290 cfs
50th (Median)	Normal (median)	8,070
75th	High threshold	11,600
95th	Very High threshold	0

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	4,950	5.17
May 27, 2026	6,320	5.46
May 26, 2026	6,240	5.47
May 25, 2026	6,950	5.63
May 24, 2026	6,450	5.50
May 23, 2026	5,270	5.20
May 22, 2026	5,170	5.20
May 21, 2026	5,330	5.22
May 20, 2026	6,050	5.40
May 19, 2026	6,020	5.41
May 18, 2026	6,290	5.46
May 17, 2026	5,290	5.21
May 16, 2026	5,970	5.38
May 15, 2026	5,490	5.26
Apr 20, 2026	23,600	10.10
Apr 19, 2026	25,600	10.67
Apr 18, 2026	26,500	10.91
Apr 17, 2026	22,700	9.87
Apr 16, 2026	19,100	8.85
Apr 15, 2026	17,500	8.41
Apr 14, 2026	15,100	7.74
Apr 13, 2026	14,200	7.49
Apr 12, 2026	15,500	7.84
Apr 11, 2026	15,800	7.93
Apr 10, 2026	17,000	8.26
Apr 9, 2026	19,500	8.97
Apr 8, 2026	21,200	9.45
Apr 7, 2026	25,300	10.59
Apr 6, 2026	31,000	12.18
Apr 5, 2026	39,400	14.53

Station Information

USGS Site No: 05542500
State: IL
County: Grundy County
Coordinates: 41.3546, -88.4285
Drainage Area: 7,483 mi²
Datum (ft): 478.2
HUC Code: 07120005

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 13.0 ft
Flood Stage: 16.0 ft
Moderate Flood: 18.0 ft
Major Flood: 22.0 ft

Currently 10.79 ft below flood stage.

Recent Extremes

Max discharge: 39,400 cfs

Apr 5, 2026
Min discharge: 729 cfs

Dec 26, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Aux Sable Creek Near Morris, IL
6.0 mi · 35 cfs

Low
Kankakee River Near Wilmington, IL
12.6 mi · 2,570 cfs

Low
Du Page River at Shorewood, IL
16.8 mi · 171 cfs

Normal
Kankakee River at Custer Park, IL
17.3 mi

Unknown
Hickory Creek at Joliet, IL
21.5 mi · 44 cfs

Normal