How high is the Kishwaukee River at Belvidere, IL right now?

The Kishwaukee River at Belvidere, IL is currently flowing at 233 cubic feet per second with a gage height of 1.64 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Kishwaukee River at Belvidere, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 35th percentile compared to the long-term historical record at this gauge.

Is the Kishwaukee River at Belvidere, IL at flood stage?

No — the gage height is 7.36 feet below the NWS flood-stage threshold of 9.0 feet.

What is the historical median flow for the Kishwaukee River at Belvidere, IL on June 11?

The long-term median discharge for this date is 308 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 124 to 2,310 cfs.

Where is the Kishwaukee River at Belvidere, IL stream gauge located?

The Kishwaukee River at Belvidere, IL stream gauge is operated by the USGS in Boone County, IL on the Kishwaukee River. USGS site number 05438500 (coordinates 42.2561, -88.8632).

Kishwaukee River at Belvidere, IL

USGS Site No: 05438500 • Kishwaukee River • Boone County, IL

Kishwaukee River at Belvidere, IL on the Kishwaukee River is currently at 233 cfs (Normal — 35th percentile for this date) . Gage height: 1.64 ft.

Reading from 1 week ago

↑ Upstream on Kishwaukee River

Kishwaukee River at Marengo, IL

Downstream on Kishwaukee River ↓

Kishwaukee River Near Perryville, IL

233

CFS Discharge

1.64

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	124
25th	Low threshold	179
50th (Median)	Normal (median)	308	Today: 233 cfs
75th	High threshold	605
95th	Very High threshold	2,310

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	245	1.68
May 27, 2026	262	1.73
May 26, 2026	285	1.81
May 25, 2026	302	1.86
May 24, 2026	278	1.78
May 23, 2026	267	1.75
May 22, 2026	271	1.76
May 21, 2026	277	1.78
May 20, 2026	297	1.84
May 19, 2026	320	1.91
May 18, 2026	332	1.94
May 17, 2026	338	1.96
May 16, 2026	347	1.99
May 15, 2026	348	1.99
Apr 20, 2026	3,110	7.58
Apr 19, 2026	4,400	9.17
Apr 18, 2026	4,530	9.31
Apr 17, 2026	4,230	9.06
Apr 16, 2026	3,840	8.57
Apr 15, 2026	1,710	5.30
Apr 14, 2026	1,060	3.96
Apr 13, 2026	1,020	3.88
Apr 12, 2026	1,160	4.19
Apr 11, 2026	1,340	4.59
Apr 10, 2026	1,230	4.34
Apr 9, 2026	1,280	4.45
Apr 8, 2026	1,650	5.22
Apr 7, 2026	2,200	6.22
Apr 6, 2026	3,250	7.77
Apr 5, 2026	4,150	8.97

Station Information

USGS Site No: 05438500
State: IL
County: Boone County
Coordinates: 42.2561, -88.8632
Drainage Area: 538 mi²
Datum (ft): 738.5
HUC Code: 07090006

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 6.0 ft
Flood Stage: 9.0 ft
Moderate Flood: 10.0 ft
Major Flood: 12.0 ft

Currently 7.36 ft below flood stage.

Recent Extremes

Max discharge: 4,530 cfs

Apr 18, 2026
Min discharge: 45 cfs

Aug 9, 2025
Days at flood stage: 3

Computed from the local daily-values archive.

Nearby Gauges

Kishwaukee River Near Perryville, IL
8.1 mi · 570 cfs

Normal
South Branch Kishwaukee River near Fairdale IL
10.2 mi · 73 cfs

Low
Kishwaukee River at Marengo, IL
13.0 mi · 64 cfs

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

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

Normal