How high is the Kaskaskia River at Vandalia, IL right now?

The Kaskaskia River at Vandalia, IL is currently flowing at 2,020 cubic feet per second with a gage height of 9.53 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Kaskaskia River at Vandalia, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 72th percentile compared to the long-term historical record at this gauge.

Is the Kaskaskia River at Vandalia, IL at flood stage?

No — the gage height is 8.47 feet below the NWS flood-stage threshold of 18.0 feet.

What is the historical median flow for the Kaskaskia River at Vandalia, IL on June 11?

The long-term median discharge for this date is 1,240 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 123 to 4,870 cfs.

Where is the Kaskaskia River at Vandalia, IL stream gauge located?

The Kaskaskia River at Vandalia, IL stream gauge is operated by the USGS in Fayette County, IL on the Kaskaskia River. USGS site number 05592500 (coordinates 38.9606, -89.0888).

Kaskaskia River at Vandalia, IL

USGS Site No: 05592500 • Kaskaskia River • Fayette County, IL

Kaskaskia River at Vandalia, IL on the Kaskaskia River is currently at 2,020 cfs (Normal — 72th percentile for this date) . Gage height: 9.53 ft.

Reading from 1 week ago

↑ Upstream on Kaskaskia River

Kaskaskia River Near Cowden, IL

Downstream on Kaskaskia River ↓

Kaskaskia River at Carlyle, IL

2,020

CFS Discharge

9.53

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	123
25th	Low threshold	530
50th (Median)	Normal (median)	1,240
75th	High threshold	2,110	Today: 2,020 cfs
95th	Very High threshold	4,870

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	3,460	12.78
May 27, 2026	2,200	9.94
May 26, 2026	1,910	9.24
May 25, 2026	2,010	9.49
May 24, 2026	2,180	9.93
May 23, 2026	1,780	8.88
May 22, 2026	1,400	7.87
May 21, 2026	1,800	8.94
May 20, 2026	3,860	13.51
May 19, 2026	5,140	15.99
May 18, 2026	2,140	9.75
May 17, 2026	2,000	9.47
May 16, 2026	2,040	9.59
May 15, 2026	1,960	9.37
Apr 20, 2026	1,860	9.11
Apr 19, 2026	2,560	10.83
Apr 18, 2026	1,610	8.41
Apr 17, 2026	1,450	8.00
Apr 16, 2026	1,300	7.57
Apr 15, 2026	1,330	7.66
Apr 14, 2026	1,550	8.29
Apr 13, 2026	1,750	8.82
Apr 12, 2026	1,840	9.07
Apr 11, 2026	1,940	9.32
Apr 10, 2026	2,140	9.83
Apr 9, 2026	2,290	10.17
Apr 8, 2026	2,510	10.69
Apr 7, 2026	3,160	12.14
Apr 6, 2026	4,650	15.09
Apr 5, 2026	5,020	15.78

Station Information

USGS Site No: 05592500
State: IL
County: Fayette County
Coordinates: 38.9606, -89.0888
Drainage Area: 1,940 mi²
Datum (ft): 452.8
HUC Code: 07140202

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 16.0 ft
Flood Stage: 18.0 ft
Moderate Flood: 24.0 ft
Major Flood: 26.0 ft

Currently 8.47 ft below flood stage.

Recent Extremes

Max discharge: 8,680 cfs

Jul 22, 2025
Min discharge: 20 cfs

Sep 21, 2025
Days at flood stage: 3

Computed from the local daily-values archive.

Nearby Gauges

Hickory Creek Near Brownstown, IL
7.5 mi · 7 cfs

Normal
Hurricane Creek Near Mulberry Grove, IL
8.4 mi · 46 cfs

Normal
East Fork Kaskaskia River Near Sandoval, IL
18.8 mi · 32 cfs

Normal
East Fork Shoal Creek Near Coffeen, IL
19.2 mi · 9 cfs

Normal
Kaskaskia River Near Cowden, IL
22.8 mi · 1,180 cfs

Normal