How high is the Chicago Sanitary And Ship Canal near Lemont, IL right now?

The Chicago Sanitary And Ship Canal near Lemont, IL is currently flowing at 1,300 cubic feet per second with a gage height of 25.43 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Chicago Sanitary And Ship Canal near Lemont, IL normal for this time of year?

Current flow is classified as very low for June 11. Today's discharge is at the 5th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Chicago Sanitary And Ship Canal near Lemont, IL on June 11?

The long-term median discharge for this date is 3,890 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 2,490 to unavailable cfs.

Where is the Chicago Sanitary And Ship Canal near Lemont, IL stream gauge located?

The Chicago Sanitary And Ship Canal near Lemont, IL stream gauge is operated by the USGS in DuPage County, IL on the Chicago Sanitary and Ship Canal. USGS site number 05536890 (coordinates 41.6912, -87.9638).

Chicago Sanitary And Ship Canal near Lemont, IL

USGS Site No: 05536890 • Chicago Sanitary and Ship Canal • DuPage County, IL

Chicago Sanitary And Ship Canal near Lemont, IL on the Chicago Sanitary and Ship Canal is currently at 1,300 cfs (Very Low — 5th percentile for this date) . Gage height: 25.43 ft. This station is at or above flood stage.

Reading from 1 week ago

Downstream on Chicago Sanitary and Ship Canal ↓

Chicago Sanitary And Ship Canal at Romeoville, IL

1,300

CFS Discharge

25.43

Gage Height (ft)

Very Low

Flow Condition

FLOOD

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	2,490	Today: 1,300 cfs
25th	Low threshold	2,560
50th (Median)	Normal (median)	3,890
75th	High threshold	5,250
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	1,690	25.52
May 27, 2026	2,390	25.39
May 26, 2026	2,150	25.39
May 25, 2026	2,270	25.43
May 24, 2026	2,400	25.26
May 23, 2026	1,570	25.51
May 22, 2026	1,430	25.42
May 21, 2026	1,480	25.45
May 20, 2026	1,490	25.46
May 19, 2026	1,360	24.93
May 18, 2026	1,960	24.91
May 17, 2026	1,440	25.31
May 16, 2026	1,550	25.13
May 15, 2026	1,230	25.45
Apr 20, 2026	3,290	25.18
Apr 19, 2026	3,800	25.28
Apr 18, 2026	5,290	23.99
Apr 17, 2026	5,460	24.38
Apr 16, 2026	3,700	24.71
Apr 15, 2026	4,810	23.88
Apr 14, 2026	3,510	24.57
Apr 13, 2026	1,950	25.30
Apr 12, 2026	2,240	25.07
Apr 11, 2026	2,250	25.37
Apr 10, 2026	2,120	24.86
Apr 9, 2026	3,300	24.94
Apr 8, 2026	2,590	25.41
Apr 7, 2026	2,720	25.22
Apr 6, 2026	3,640	25.22
Apr 5, 2026	4,990	24.70

Station Information

USGS Site No: 05536890
State: IL
County: DuPage County
Coordinates: 41.6912, -87.9638
Drainage Area: 738 mi²
Datum (ft): 551.8
HUC Code: 07120004

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 32.0 ft

Recent Extremes

Max discharge: 8,490 cfs

Apr 4, 2026
Min discharge: 373 cfs

Feb 9, 2026

Computed from the local daily-values archive.

Nearby Gauges

Sawmill Creek Near Lemont, IL
1.1 mi · 1 cfs

Low
Des Plaines River Near Lemont, IL
3.6 mi · 452 cfs

Normal
Long Run Near Lemont, IL
3.8 mi · 3 cfs

Low
Flag Creek Near Willow Springs, IL
4.8 mi · 12 cfs

Normal
Chicago Sanitary And Ship Canal at Romeoville, IL
6.1 mi · 0 cfs

Unknown