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

The Kaskaskia River at New Athens, IL is currently flowing at 5,590 cubic feet per second with a gage height of 69.67 feet, based on the most recent USGS instantaneous reading.

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

Current flow is classified as very high for June 11. Today's discharge is at the 95th percentile compared to the long-term historical record at this gauge.

Is the Kaskaskia River at New Athens, IL at flood stage?

No — the gage height is 9.33 feet below the NWS flood-stage threshold of 79.0 feet.

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

The long-term median discharge for this date is 3,300 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 547 to unavailable cfs.

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

The Kaskaskia River at New Athens, IL stream gauge is operated by the USGS in St. Clair County, IL on the Kaskaskia River. USGS site number 05595000 (coordinates 38.3197, -89.8883).

Kaskaskia River at New Athens, IL

USGS Site No: 05595000 • Kaskaskia River • St. Clair County, IL

Kaskaskia River at New Athens, IL on the Kaskaskia River is currently at 5,590 cfs (Very High — 95th percentile for this date) . Gage height: 69.67 ft.

Reading from 1 week ago

↑ Upstream on Kaskaskia River

Kaskaskia River Near Venedy Station, IL

5,590

CFS Discharge

69.67

Gage Height (ft)

Very High

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
10th	Very Low threshold	547
25th	Low threshold	1,420
50th (Median)	Normal (median)	3,300
75th	High threshold	5,560
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	6,530	70.00
May 27, 2026	5,700	69.78
May 26, 2026	5,650	69.84
May 25, 2026	7,350	71.23
May 24, 2026	9,620	73.04
May 23, 2026	11,900	73.84
May 22, 2026	12,800	73.48
May 21, 2026	12,800	72.69
May 20, 2026	12,400	72.56
May 19, 2026	11,400	72.21
May 18, 2026	7,300	70.42
May 17, 2026	7,010	70.36
May 16, 2026	7,340	70.45
May 15, 2026	7,690	70.62
Apr 20, 2026	4,940	72.70
Apr 19, 2026	5,630	71.53
Apr 18, 2026	3,940	70.60
Apr 17, 2026	1,890	69.76
Apr 16, 2026	2,090	69.06
Apr 15, 2026	2,330	69.07
Apr 14, 2026	3,230	69.15
Apr 13, 2026	3,880	69.29
Apr 12, 2026	4,000	69.36
Apr 11, 2026	4,320	69.36
Apr 10, 2026	4,630	69.42
Apr 9, 2026	5,040	69.60
Apr 8, 2026	5,460	69.48
Apr 7, 2026	5,570	69.93
Apr 6, 2026	5,530	69.99
Apr 5, 2026	6,390	70.00

Station Information

USGS Site No: 05595000
State: IL
County: St. Clair County
Coordinates: 38.3197, -89.8883
Drainage Area: 5,189 mi²
Datum (ft): 299.5
HUC Code: 07140204

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 77.0 ft
Flood Stage: 79.0 ft
Moderate Flood: 82.0 ft
Major Flood: 85.0 ft

Currently 9.33 ft below flood stage.

Recent Extremes

Max discharge: 19,000 cfs

Apr 22, 2025
Min discharge: 263 cfs

Sep 11, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Richland Creek Near Hecker, IL
4.5 mi · 54 cfs

Normal
Silver Creek Near Freeburg, IL
6.0 mi · 146 cfs

Normal
Kaskaskia River Near Venedy Station, IL
16.8 mi · 4,680 cfs

Normal
Sugar Creek Near Aviston, IL
24.8 mi · 13 cfs

Very High
Mississippi River at St. Louis, MO
26.6 mi · 225,000 cfs

Normal