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

The Illinois River at Valley City, IL is currently flowing at 14,900 cubic feet per second with a gage height of 4.51 feet, based on the most recent USGS instantaneous reading.

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

Current flow is classified as low for June 11. Today's discharge is at the 20th percentile compared to the long-term historical record at this gauge.

Is the Illinois River at Valley City, IL at flood stage?

No — the gage height is 9.49 feet below the NWS flood-stage threshold of 14.0 feet.

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

The long-term median discharge for this date is 26,400 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 11,500 to 78,900 cfs.

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

The Illinois River at Valley City, IL stream gauge is operated by the USGS in Scott County, IL on the Illinois River. USGS site number 05586100 (coordinates 39.7032, -90.6431).

Illinois River at Valley City, IL

USGS Site No: 05586100 • Illinois River • Scott County, IL

Illinois River at Valley City, IL on the Illinois River is currently at 14,900 cfs (Low — 20th percentile for this date) . Gage height: 4.51 ft.

Reading from 1 week ago

↑ Upstream on Illinois River

Illinois River at Meredosia, IL

14,900

CFS Discharge

4.51

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	11,500
25th	Low threshold	16,700	Today: 14,900 cfs
50th (Median)	Normal (median)	26,400
75th	High threshold	41,000
95th	Very High threshold	78,900

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	15,800	4.74
May 27, 2026	15,700	4.71
May 26, 2026	15,900	4.75
May 25, 2026	16,300	4.88
May 24, 2026	18,200	5.37
May 23, 2026	20,400	5.96
May 22, 2026	22,400	6.46
May 21, 2026	—	7.09
May 20, 2026	25,100	7.65
May 19, 2026	25,900	8.23
May 18, 2026	27,500	7.99
May 17, 2026	31,500	8.91
May 16, 2026	34,200	9.57
May 15, 2026	35,600	9.89
Apr 20, 2026	49,700	12.97
Apr 19, 2026	49,200	12.74
Apr 18, 2026	47,200	12.61
Apr 17, 2026	45,500	11.90
Apr 16, 2026	46,100	11.96
Apr 15, 2026	46,300	11.88
Apr 14, 2026	46,600	11.81
Apr 13, 2026	46,900	11.86
Apr 12, 2026	46,900	11.86
Apr 11, 2026	46,800	11.76
Apr 10, 2026	46,500	11.62
Apr 9, 2026	46,200	11.46
Apr 8, 2026	45,500	11.28
Apr 7, 2026	44,700	10.99
Apr 6, 2026	42,900	10.58
Apr 5, 2026	39,900	9.92

Station Information

USGS Site No: 05586100
State: IL
County: Scott County
Coordinates: 39.7032, -90.6431
Drainage Area: 26,743 mi²
Datum (ft): 417.7
HUC Code: 07130011

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 11.0 ft
Flood Stage: 14.0 ft
Moderate Flood: 21.0 ft
Major Flood: 23.0 ft

Currently 9.49 ft below flood stage.

Recent Extremes

Max discharge: 49,700 cfs

Apr 20, 2026
Min discharge: 2,730 cfs

Sep 17, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Illinois River at Meredosia, IL
9.9 mi · 5,790 cfs

Very Low
LA Moine River at Ripley, IL
22.3 mi · 276 cfs

Normal
Hadley Creek Near Barry, IL
22.5 mi

Unknown
North Fork Mauvaise Terre Creek near Jacksonville, IL
27.6 mi

Unknown
Macoupin Creek Near Kane, IL
35.0 mi · 220 cfs

Normal