How high is the Big Muddy River at Rte 127 at Murphysboro, IL right now?

The Big Muddy River at Rte 127 at Murphysboro, IL is currently flowing at 509 cubic feet per second with a gage height of 5.25 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Big Muddy River at Rte 127 at Murphysboro, IL normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 18th percentile compared to the long-term historical record at this gauge.

Is the Big Muddy River at Rte 127 at Murphysboro, IL at flood stage?

No — the gage height is 16.75 feet below the NWS flood-stage threshold of 22.0 feet.

What is the historical median flow for the Big Muddy River at Rte 127 at Murphysboro, IL on June 11?

The long-term median discharge for this date is 1,320 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 295 to 8,560 cfs.

Where is the Big Muddy River at Rte 127 at Murphysboro, IL stream gauge located?

The Big Muddy River at Rte 127 at Murphysboro, IL stream gauge is operated by the USGS in Jackson County, IL on the Big Muddy River. USGS site number 05599490 (coordinates 37.7583, -89.3278).

Big Muddy River at Rte 127 at Murphysboro, IL

USGS Site No: 05599490 • Big Muddy River • Jackson County, IL

Big Muddy River at Rte 127 at Murphysboro, IL on the Big Muddy River is currently at 509 cfs (Low — 18th percentile for this date) . Gage height: 5.25 ft.

Reading from 1 week ago

↑ Upstream on Big Muddy River

Big Muddy River at Plumfield, IL

509

CFS Discharge

5.25

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	295
25th	Low threshold	702	Today: 509 cfs
50th (Median)	Normal (median)	1,320
75th	High threshold	3,060
95th	Very High threshold	8,560

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	525	6.66
May 27, 2026	575	8.08
May 26, 2026	632	9.70
May 25, 2026	582	11.21
May 24, 2026	464	12.16
May 23, 2026	263	12.23
May 22, 2026	106	11.07
May 21, 2026	-121	8.33
May 20, 2026	182	4.75
May 19, 2026	358	4.18
May 18, 2026	387	4.26
May 17, 2026	442	4.65
May 16, 2026	481	5.27
May 15, 2026	525	5.82
Apr 20, 2026	91	13.41
Apr 19, 2026	247	12.18
Apr 18, 2026	220	11.59
Apr 17, 2026	142	10.84
Apr 16, 2026	165	9.33
Apr 15, 2026	283	8.47
Apr 14, 2026	363	8.30
Apr 13, 2026	422	8.45
Apr 12, 2026	446	8.64
Apr 11, 2026	507	8.85
Apr 10, 2026	611	9.20
Apr 9, 2026	792	9.64
Apr 8, 2026	1,040	10.58
Apr 7, 2026	1,010	11.31
Apr 6, 2026	812	10.59
Apr 5, 2026	514	7.25

Station Information

USGS Site No: 05599490
State: IL
County: Jackson County
Coordinates: 37.7583, -89.3278
Drainage Area: 2,159 mi²
Datum (ft): 335.1
HUC Code: 07140106

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 20.0 ft
Flood Stage: 22.0 ft
Moderate Flood: 28.0 ft
Major Flood: 36.0 ft

Currently 16.75 ft below flood stage.

Recent Extremes

Max discharge: 9,700 cfs

Apr 22, 2025
Min discharge: -121 cfs

May 21, 2026
Days at flood stage: 4

Computed from the local daily-values archive.

Nearby Gauges

Big Muddy River at Plumfield, IL
19.2 mi · 258 cfs

Low
Crab Orchard Creek Near Marion, IL
24.0 mi · 2 cfs

Normal
Mississippi River at Chester, IL
29.1 mi · 256,000 cfs

Normal
Big Creek Near Wetaug, IL
32.4 mi

Unknown
South Fork Saline Creek Near Perryville, MO
32.8 mi · 21 cfs

Normal