How high is the Kishwaukee River Near Perryville, IL right now?

The Kishwaukee River Near Perryville, IL is currently flowing at 570 cubic feet per second with a gage height of 6.03 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Kishwaukee River Near Perryville, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 47th percentile compared to the long-term historical record at this gauge.

Is the Kishwaukee River Near Perryville, IL at flood stage?

No — the gage height is 5.97 feet below the NWS flood-stage threshold of 12.0 feet.

What is the historical median flow for the Kishwaukee River Near Perryville, IL on June 11?

The long-term median discharge for this date is 595 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 260 to 4,350 cfs.

Where is the Kishwaukee River Near Perryville, IL stream gauge located?

The Kishwaukee River Near Perryville, IL stream gauge is operated by the USGS in Winnebago County, IL on the Kishwaukee River. USGS site number 05440000 (coordinates 42.1944, -88.9989).

Kishwaukee River Near Perryville, IL

USGS Site No: 05440000 • Kishwaukee River • Winnebago County, IL

Kishwaukee River Near Perryville, IL on the Kishwaukee River is currently at 570 cfs (Normal — 47th percentile for this date) . Gage height: 6.03 ft.

Reading from 1 week ago

↑ Upstream on Kishwaukee River

Kishwaukee River at Belvidere, IL

570

CFS Discharge

6.03

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	260
25th	Low threshold	416
50th (Median)	Normal (median)	595	Today: 570 cfs
75th	High threshold	1,240
95th	Very High threshold	4,350

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	607	6.09
May 27, 2026	630	6.13
May 26, 2026	688	6.22
May 25, 2026	725	6.27
May 24, 2026	630	6.13
May 23, 2026	625	6.12
May 22, 2026	628	6.12
May 21, 2026	641	6.14
May 20, 2026	671	6.19
May 19, 2026	699	6.24
May 18, 2026	713	6.26
May 17, 2026	733	6.29
May 16, 2026	743	6.30
May 15, 2026	750	6.31
Apr 20, 2026	6,730	12.08
Apr 19, 2026	8,670	13.86
Apr 18, 2026	8,180	13.42
Apr 17, 2026	7,800	13.06
Apr 16, 2026	6,490	11.89
Apr 15, 2026	3,550	9.32
Apr 14, 2026	2,340	8.16
Apr 13, 2026	2,300	8.12
Apr 12, 2026	2,560	8.38
Apr 11, 2026	2,950	8.76
Apr 10, 2026	2,800	8.61
Apr 9, 2026	2,890	8.70
Apr 8, 2026	3,640	9.42
Apr 7, 2026	5,280	10.85
Apr 6, 2026	7,500	12.78
Apr 5, 2026	8,740	13.93

Station Information

USGS Site No: 05440000
State: IL
County: Winnebago County
Coordinates: 42.1944, -88.9989
Drainage Area: 1,099 mi²
Datum (ft): 692.0
HUC Code: 07090006

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 11.5 ft
Flood Stage: 12.0 ft
Moderate Flood: 18.0 ft
Major Flood: 22.0 ft

Currently 5.97 ft below flood stage.

Recent Extremes

Max discharge: 8,740 cfs

Apr 5, 2026
Min discharge: 154 cfs

Oct 6, 2025
Days at flood stage: 7

Computed from the local daily-values archive.

Nearby Gauges

South Branch Kishwaukee River near Fairdale IL
7.7 mi · 73 cfs

Low
Kishwaukee River at Belvidere, IL
8.1 mi · 233 cfs

Normal
Rock River at Byron, IL
14.1 mi · 5,540 cfs

Normal
Rock River at Rockton, IL
18.1 mi · 4,690 cfs

Normal
Pecatonica River near Shirland, Ill
19.1 mi · 1,380 cfs

Normal