How high is the Rock River at Dixon, IL right now?

The Rock River at Dixon, IL is currently flowing at 5,770 cubic feet per second with a gage height of 9.12 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Rock River at Dixon, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 28th percentile compared to the long-term historical record at this gauge.

Is the Rock River at Dixon, IL at flood stage?

No — the gage height is 6.88 feet below the NWS flood-stage threshold of 16.0 feet.

What is the historical median flow for the Rock River at Dixon, IL on June 11?

The long-term median discharge for this date is 7,570 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 3,600 to unavailable cfs.

Where is the Rock River at Dixon, IL stream gauge located?

The Rock River at Dixon, IL stream gauge is operated by the USGS in Lee County, IL on the Rock River. USGS site number 05442300 (coordinates 41.8442, -89.4858).

Rock River at Dixon, IL

USGS Site No: 05442300 • Rock River • Lee County, IL

Rock River at Dixon, IL on the Rock River is currently at 5,770 cfs (Normal — 28th percentile for this date) . Gage height: 9.12 ft.

Reading from 1 week ago

↑ Upstream on Rock River

Rock River at Byron, IL

Downstream on Rock River ↓

Rock River at Como, IL

5,770

CFS Discharge

9.12

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	3,600
25th	Low threshold	5,500
50th (Median)	Normal (median)	7,570	Today: 5,770 cfs
75th	High threshold	13,100
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	5,370	8.97
May 27, 2026	5,530	9.03
May 26, 2026	6,380	9.36
May 25, 2026	6,520	9.41
May 24, 2026	6,810	9.51
May 23, 2026	6,910	9.55
May 22, 2026	7,080	9.61
May 21, 2026	7,140	9.63
May 20, 2026	7,430	9.74
May 19, 2026	7,780	9.86
May 18, 2026	8,030	9.94
May 17, 2026	8,240	10.02
May 16, 2026	8,710	10.17
May 15, 2026	8,420	10.08
Apr 20, 2026	32,400	15.93
Apr 19, 2026	30,700	15.57
Apr 18, 2026	26,700	14.73
Apr 17, 2026	23,100	13.93
Apr 16, 2026	17,600	12.62
Apr 15, 2026	12,100	11.16
Apr 14, 2026	10,600	10.72
Apr 13, 2026	10,900	10.80
Apr 12, 2026	11,300	10.93
Apr 11, 2026	11,300	10.93
Apr 10, 2026	10,900	10.83
Apr 9, 2026	11,300	10.93
Apr 8, 2026	13,000	11.41
Apr 7, 2026	15,700	12.14
Apr 6, 2026	18,400	12.82
Apr 5, 2026	18,000	12.73

Station Information

USGS Site No: 05442300
State: IL
County: Lee County
Coordinates: 41.8442, -89.4858
Drainage Area: 8,615 mi²
Datum (ft): 628.5
HUC Code: 07090005

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 13.0 ft
Flood Stage: 16.0 ft
Moderate Flood: 18.0 ft
Major Flood: 20.0 ft

Currently 6.88 ft below flood stage.

Recent Extremes

Max discharge: 32,400 cfs

Apr 20, 2026
Min discharge: 2,300 cfs

Nov 16, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Elkhorn Creek Near Penrose, IL
11.6 mi · 60 cfs

Normal
Rock River at Como, IL
14.3 mi · 6,220 cfs

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

Normal
Pecatonica River at Freeport, IL
32.2 mi · 769 cfs

Normal
Big Bureau Creek at Princeton, IL
32.9 mi · 19 cfs

Very Low