How high is the Sangamon River at Monticello, IL right now?

The Sangamon River at Monticello, IL is currently flowing at 137 cubic feet per second with a gage height of 5.81 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Sangamon River at Monticello, IL normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 26th percentile compared to the long-term historical record at this gauge.

Is the Sangamon River at Monticello, IL at flood stage?

No — the gage height is 7.19 feet below the NWS flood-stage threshold of 13.0 feet.

What is the historical median flow for the Sangamon River at Monticello, IL on June 11?

The long-term median discharge for this date is 268 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 81 to 1,980 cfs.

Where is the Sangamon River at Monticello, IL stream gauge located?

The Sangamon River at Monticello, IL stream gauge is operated by the USGS in Piatt County, IL on the Sangamon River. USGS site number 05572000 (coordinates 40.0312, -88.5892).

Sangamon River at Monticello, IL

USGS Site No: 05572000 • Sangamon River • Piatt County, IL

Sangamon River at Monticello, IL on the Sangamon River is currently at 137 cfs (Normal — 26th percentile for this date) . Gage height: 5.81 ft.

Reading from 1 week ago

↑ Upstream on Sangamon River

Sangamon River at Fisher, IL

Downstream on Sangamon River ↓

Sangamon River at Route 48 at Decatur, IL

137

CFS Discharge

5.81

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	81
25th	Low threshold	134
50th (Median)	Normal (median)	268	Today: 137 cfs
75th	High threshold	720
95th	Very High threshold	1,980

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	171	6.11
May 27, 2026	215	6.45
May 26, 2026	150	5.92
May 25, 2026	124	5.70
May 24, 2026	131	5.76
May 23, 2026	143	5.87
May 22, 2026	161	6.02
May 21, 2026	186	6.23
May 20, 2026	226	6.53
May 19, 2026	253	6.72
May 18, 2026	173	6.11
May 17, 2026	145	5.88
May 16, 2026	149	5.92
May 15, 2026	155	5.97
Apr 20, 2026	740	9.33
Apr 19, 2026	559	8.47
Apr 18, 2026	470	8.01
Apr 17, 2026	199	6.26
Apr 16, 2026	118	5.64
Apr 15, 2026	108	5.54
Apr 14, 2026	115	5.61
Apr 13, 2026	127	5.73
Apr 12, 2026	144	5.88
Apr 11, 2026	166	6.07
Apr 10, 2026	195	6.31
Apr 9, 2026	239	6.63
Apr 8, 2026	314	7.12
Apr 7, 2026	444	7.87
Apr 6, 2026	546	8.41
Apr 5, 2026	476	8.05

Station Information

USGS Site No: 05572000
State: IL
County: Piatt County
Coordinates: 40.0312, -88.5892
Drainage Area: 550 mi²
Datum (ft): 625.6
HUC Code: 07130006

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 11.0 ft
Flood Stage: 13.0 ft
Moderate Flood: 17.0 ft
Major Flood: 20.0 ft

Currently 7.19 ft below flood stage.

Recent Extremes

Max discharge: 993 cfs

Jun 7, 2025
Min discharge: 0 cfs

Nov 25, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Salt Creek Near Farmer City, IL
14.1 mi · 29 cfs

Very Low
Copper Slough at Champaign, IL
15.6 mi · 2 cfs

Very Low
Lake Fork at Atwood, IL
16.7 mi · 91 cfs

Normal
North Fork Salt Creek Near DE Witt, IL
18.3 mi · 20 cfs

Very Low
Boneyard Creek at Urbana, IL
20.0 mi · 2 cfs

Normal