How high is the Connecticut River at Thompsonville, CT right now?

The Connecticut River at Thompsonville, CT is currently flowing at 12,000 cubic feet per second with a gage height of 8.80 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Connecticut River at Thompsonville, CT normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 51th percentile compared to the long-term historical record at this gauge.

Is the Connecticut River at Thompsonville, CT at flood stage?

No — the gage height is 6.20 feet below the NWS flood-stage threshold of 15.0 feet.

What is the historical median flow for the Connecticut River at Thompsonville, CT on June 11?

The long-term median discharge for this date is 11,800 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 5,240 to 41,100 cfs.

Where is the Connecticut River at Thompsonville, CT stream gauge located?

The Connecticut River at Thompsonville, CT stream gauge is operated by the USGS in Capitol Planning Region, CT on the Connecticut River. USGS site number 01184000 (coordinates 41.9872, -72.6053).

Connecticut River at Thompsonville, CT

USGS Site No: 01184000 • Connecticut River • Capitol Planning Region, CT

Connecticut River at Thompsonville, CT on the Connecticut River is currently at 12,000 cfs (Normal — 51th percentile for this date) . Gage height: 8.80 ft.

Reading from 1 week ago

↑ Upstream on Connecticut River

Connecticut River at I-391 Bridge at Holyoke, MA

12,000

CFS Discharge

8.80

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	5,240
25th	Low threshold	7,870
50th (Median)	Normal (median)	11,800
75th	High threshold	17,500	Today: 12,000 cfs
95th	Very High threshold	41,100

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	18,400	9.58
May 27, 2026	20,100	9.79
May 26, 2026	17,900	9.52
May 25, 2026	11,700	8.77
May 24, 2026	10,300	8.61
May 23, 2026	10,300	8.62
May 22, 2026	14,000	9.03
May 21, 2026	17,200	9.44
May 20, 2026	18,400	9.59
May 19, 2026	24,300	10.20
May 18, 2026	36,000	11.23
May 17, 2026	39,800	11.59
May 16, 2026	39,000	11.51
May 15, 2026	22,000	9.95
Apr 21, 2026	37,900	11.41
Apr 20, 2026	34,300	11.06
Apr 19, 2026	34,700	11.10
Apr 18, 2026	34,300	11.07
Apr 17, 2026	32,000	10.88
Apr 16, 2026	28,800	10.62
Apr 15, 2026	22,900	10.08
Apr 14, 2026	23,400	10.13
Apr 13, 2026	24,100	10.20
Apr 12, 2026	24,400	10.23
Apr 11, 2026	24,400	10.22
Apr 10, 2026	22,000	10.00
Apr 9, 2026	25,800	10.36
Apr 8, 2026	28,500	10.60
Apr 7, 2026	28,700	10.61
Apr 6, 2026	34,700	11.10

Station Information

USGS Site No: 01184000
State: CT
County: Capitol Planning Region
Coordinates: 41.9872, -72.6053
Drainage Area: 9,660 mi²
Datum (ft): 27.8
HUC Code: 010802050105

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 14.0 ft
Flood Stage: 15.0 ft
Moderate Flood: 17.0 ft
Major Flood: 19.0 ft

Currently 6.20 ft below flood stage.

Recent Extremes

Max discharge: 83,000 cfs

May 11, 2025
Min discharge: 2,220 cfs

Sep 4, 2025
Days at flood stage: 1

Computed from the local daily-values archive.

Nearby Gauges

Stony Brook Near West Suffield, CT
5.7 mi · 4 cfs

Normal
Broad Brook at Broad Brook, CT
5.8 mi · 17 cfs

Normal
Farmington River at Tariffville, CT
9.6 mi · 430 cfs

Very Low
Hockanum River Near East Hartford, CT
14.1 mi · 82 cfs

Normal
North Branch Park River at Hartford, CT
15.0 mi · 14 cfs

Normal