How high is the Mill Creek at Old Mill Creek, IL right now?

The Mill Creek at Old Mill Creek, IL is currently flowing at 11 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 Mill Creek at Old Mill Creek, IL normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 19th percentile compared to the long-term historical record at this gauge.

Is the Mill Creek at Old Mill Creek, IL at flood stage?

No — the gage height is 4.97 feet below the NWS flood-stage threshold of 11.0 feet.

What is the historical median flow for the Mill Creek at Old Mill Creek, IL on June 11?

The long-term median discharge for this date is 33 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 4 to 357 cfs.

Where is the Mill Creek at Old Mill Creek, IL stream gauge located?

The Mill Creek at Old Mill Creek, IL stream gauge is operated by the USGS in Lake County, IL on the Mill Creek. USGS site number 05527950 (coordinates 42.4153, -87.9692).

Mill Creek at Old Mill Creek, IL

USGS Site No: 05527950 • Mill Creek • Lake County, IL

Mill Creek at Old Mill Creek, IL on the Mill Creek is currently at 11 cfs (Low — 19th percentile for this date) . Gage height: 6.03 ft.

Reading from 1 week ago

↑ Upstream on Mill Creek

Mill Creek Near Batavia, IL

Downstream on Mill Creek ↓

Mill Creek at Milan, IL

CFS Discharge

6.03

Gage Height (ft)

Low

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	4
25th	Low threshold	17	Today: 11 cfs
50th (Median)	Normal (median)	33
75th	High threshold	89
95th	Very High threshold	357

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	12	6.04
May 27, 2026	12	6.03
May 26, 2026	12	6.06
May 25, 2026	16	6.18
May 24, 2026	15	6.15
May 23, 2026	12	6.04
May 22, 2026	12	6.05
May 21, 2026	13	6.08
May 20, 2026	15	6.15
May 19, 2026	15	6.16
May 18, 2026	16	6.18
May 17, 2026	17	6.22
May 16, 2026	19	6.25
May 15, 2026	18	6.24
Apr 20, 2026	524	10.41
Apr 19, 2026	595	10.65
Apr 18, 2026	932	11.44
Apr 17, 2026	543	10.44
Apr 16, 2026	584	10.61
Apr 15, 2026	858	11.27
Apr 14, 2026	208	8.65
Apr 13, 2026	173	8.37
Apr 12, 2026	185	8.48
Apr 11, 2026	214	8.72
Apr 10, 2026	243	8.94
Apr 9, 2026	233	8.86
Apr 8, 2026	267	9.11
Apr 7, 2026	302	9.35
Apr 6, 2026	341	9.59
Apr 5, 2026	392	9.85

Station Information

USGS Site No: 05527950
State: IL
County: Lake County
Coordinates: 42.4153, -87.9692
Drainage Area: 61 mi²
Datum (ft): 668.1
HUC Code: 07120004

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 10.0 ft
Flood Stage: 11.0 ft
Moderate Flood: 12.0 ft
Major Flood: 15.0 ft

Currently 4.97 ft below flood stage.

Recent Extremes

Max discharge: 932 cfs

Apr 18, 2026
Min discharge: 1 cfs

Sep 8, 2025
Days at flood stage: 2

Computed from the local daily-values archive.

Nearby Gauges

Des Plaines River Near Gurnee, IL
5.1 mi · 84 cfs

Normal
Des Plaines River at Russell, IL
5.6 mi · 35 cfs

Normal
Fox River at Johnsburg, IL
13.9 mi · 427 cfs

Very High
Skokie River at Lake Forest, IL
14.1 mi · 1 cfs

Very Low
Nippersink Creek Near Spring Grove, IL
14.3 mi · 101 cfs

Normal