How high is the Pomperaug River at Southbury, CT right now?

The Pomperaug River at Southbury, CT is currently flowing at 50 cubic feet per second with a gage height of 2.83 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Pomperaug River at Southbury, CT normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 38th percentile compared to the long-term historical record at this gauge.

Is the Pomperaug River at Southbury, CT at flood stage?

No — the gage height is 6.17 feet below the NWS flood-stage threshold of 9.0 feet.

What is the historical median flow for the Pomperaug River at Southbury, CT on June 11?

The long-term median discharge for this date is 61 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 29 to 212 cfs.

Where is the Pomperaug River at Southbury, CT stream gauge located?

The Pomperaug River at Southbury, CT stream gauge is operated by the USGS in Naugatuck Valley Planning Region, CT on the Pomperaug River. USGS site number 01204000 (coordinates 41.4819, -73.2246).

Pomperaug River at Southbury, CT

USGS Site No: 01204000 • Pomperaug River • Naugatuck Valley Planning Region, CT

Pomperaug River at Southbury, CT on the Pomperaug River is currently at 50 cfs (Normal — 38th percentile for this date) . Gage height: 2.83 ft.

Reading from 1 week ago

CFS Discharge

2.83

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	29
25th	Low threshold	39
50th (Median)	Normal (median)	61	Today: 50 cfs
75th	High threshold	104
95th	Very High threshold	212

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	60	2.91
May 27, 2026	72	3.02
May 26, 2026	99	3.23
May 25, 2026	145	3.52
May 24, 2026	124	3.33
May 23, 2026	39	2.73
May 22, 2026	42	2.75
May 21, 2026	44	2.77
May 20, 2026	51	2.83
May 19, 2026	52	2.84
May 18, 2026	53	2.86
May 17, 2026	59	2.91
May 16, 2026	66	2.97
May 15, 2026	80	3.08
Apr 21, 2026	85	3.12
Apr 20, 2026	91	3.17
Apr 19, 2026	90	3.16
Apr 18, 2026	92	3.18
Apr 17, 2026	102	3.25
Apr 16, 2026	107	3.28
Apr 15, 2026	96	3.20
Apr 14, 2026	94	3.19
Apr 13, 2026	96	3.21
Apr 12, 2026	98	3.22
Apr 11, 2026	101	3.25
Apr 10, 2026	107	3.29
Apr 9, 2026	111	3.31
Apr 8, 2026	116	3.35
Apr 7, 2026	127	3.41
Apr 6, 2026	146	3.52

Station Information

USGS Site No: 01204000
State: CT
County: Naugatuck Valley Planning Region
Coordinates: 41.4819, -73.2246
Drainage Area: 75 mi²
Datum (ft): 164.5
HUC Code: 011000050903

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 8.5 ft
Flood Stage: 9.0 ft
Moderate Flood: 10.0 ft
Major Flood: 12.0 ft

Currently 6.17 ft below flood stage.

Recent Extremes

Max discharge: 1,510 cfs

May 6, 2025
Min discharge: 8 cfs

Sep 21, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Weekeepeemee River at Hotchkissville, CT
5.3 mi · 13 cfs

Low
Pootatuck River at Sandy Hook, CT
5.3 mi · 16 cfs

Low
Pootatuck River at Berkshire
5.8 mi · 10 cfs

Low
Nonewaug River at Minortown, CT
7.0 mi · 6 cfs

Low
Shepaug River near Roxbury, CT
7.2 mi · 11 cfs

Very Low