How high is the Pecatonica River at Freeport, IL right now?

The Pecatonica River at Freeport, IL is currently flowing at 769 cubic feet per second with a gage height of 4.86 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Pecatonica River at Freeport, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 44th percentile compared to the long-term historical record at this gauge.

Is the Pecatonica River at Freeport, IL at flood stage?

No — the gage height is 8.14 feet below the NWS flood-stage threshold of 13.0 feet.

What is the historical median flow for the Pecatonica River at Freeport, IL on June 11?

The long-term median discharge for this date is 814 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 369 to 2,780 cfs.

Where is the Pecatonica River at Freeport, IL stream gauge located?

The Pecatonica River at Freeport, IL stream gauge is operated by the USGS in Stephenson County, IL on the Pecatonica River. USGS site number 05435500 (coordinates 42.3003, -89.6153).

Pecatonica River at Freeport, IL

USGS Site No: 05435500 • Pecatonica River • Stephenson County, IL

Pecatonica River at Freeport, IL on the Pecatonica River is currently at 769 cfs (Normal — 44th percentile for this date) . Gage height: 4.86 ft.

Reading from 1 week ago

Downstream on Pecatonica River ↓

Pecatonica River near Shirland, Ill

769

CFS Discharge

4.86

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	369
25th	Low threshold	618
50th (Median)	Normal (median)	814	Today: 769 cfs
75th	High threshold	1,350
95th	Very High threshold	2,780

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	800	5.00
May 27, 2026	822	5.10
May 26, 2026	846	5.21
May 25, 2026	867	5.30
May 24, 2026	892	5.41
May 23, 2026	928	5.57
May 22, 2026	982	5.80
May 21, 2026	1,030	6.00
May 20, 2026	1,040	6.05
May 19, 2026	1,010	5.91
May 18, 2026	969	5.74
May 17, 2026	957	5.69
May 16, 2026	970	5.75
May 15, 2026	966	5.73
Apr 20, 2026	4,480	13.30
Apr 19, 2026	4,480	13.30
Apr 18, 2026	4,270	13.13
Apr 17, 2026	3,740	12.66
Apr 16, 2026	3,460	12.37
Apr 15, 2026	2,680	11.04
Apr 14, 2026	1,430	7.00
Apr 13, 2026	1,300	6.46
Apr 12, 2026	1,320	6.57
Apr 11, 2026	1,380	6.80
Apr 10, 2026	1,330	6.61
Apr 9, 2026	1,260	6.31
Apr 8, 2026	1,380	6.78
Apr 7, 2026	1,540	7.41
Apr 6, 2026	1,630	7.76
Apr 5, 2026	1,540	7.43

Station Information

USGS Site No: 05435500
State: IL
County: Stephenson County
Coordinates: 42.3003, -89.6153
Drainage Area: 1,327 mi²
Datum (ft): 742.4
HUC Code: 07090003

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 11.5 ft
Flood Stage: 13.0 ft
Moderate Flood: 14.0 ft
Major Flood: 16.0 ft

Currently 8.14 ft below flood stage.

Recent Extremes

Max discharge: 4,480 cfs

Apr 19, 2026
Min discharge: 475 cfs

Dec 2, 2025
Days at flood stage: 3

Computed from the local daily-values archive.

Nearby Gauges

Pecatonica River at Martintown, WI
17.3 mi · 706 cfs

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

Normal
Sugar River Near Brodhead, WI
24.2 mi · 339 cfs

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

Normal
Elkhorn Creek Near Penrose, IL
27.8 mi · 60 cfs

Normal