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Connecticut River at Thompsonville water level

River gauge, Connecticut River, Connecticut, United States

Directions

Low for mid-October

Water level

8.23ft Up 0.04 ft over the last 24 hours

Flow
6,860 cfs
Water temperature
55 °F
10 20 Highest onrecord 26.60 ft Minor floodstage 15.00 ft

History

8101315ftOct 16Oct 17Oct 19Oct 20Oct 22Minor flood stage8101315ftOct 16Oct 19Oct 22Minor flood stage
8101315ftSep 21Sep 28Oct 6Oct 14Oct 22Minor flood stage8101315ftSep 21Oct 6Oct 22Minor flood stage
1015ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage1015ftOct 2025Apr 2026Oct 2026Minor flood stage
1015ftJanMarMayJulSepNov20261015ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Forecast Minor flood stage

The forecast expects the river to rise to 8.40 ft by Tuesday, October 20 at 08:00 PM. Issued Monday, October 19 at 10:40 AM by NOAA National Weather Service.

What this means

Low water at Connecticut River at Thompsonville: the gauge reads 8.23 ft, below normal for mid-October.

That puts it 0.86 ft below the median of 9.09 ft for mid-October, based on 32 years of readings. It is 6.77 ft below the flood stage of 15.00 ft. A year ago it stood at 7.54 ft (+0.69 ft).

It is on the way up, by 0.04 ft over the past 24 hours. The forecast expects the river to rise to 8.40 ft by Tuesday, October 20 at 08:00 PM. The 30-day range is 7.61 ft – 8.80 ft.

The sensor also reports a water temperature of 55 °F.

Compared with 32 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
9.09 ft0.86 ft below the median for this date
Normal for this date
7.97 ft – 10.48 ft8 years in 10 fall in this range (32 years of records)
Same day last year
7.54 ft+0.69 ft
Lowest and highest in 30 days
7.61 ft – 8.80 ft
Lowest and highest in 12 months
7.26 ft – 13.42 ft
Highest on record
26.60 ftMarch 20, 1936
Forecast peak
8.40 ftTuesday, October 20 at 08:00 PM

Paddling and fishing conditions

At low levels, plan for shorter paddling trips and expect to walk your boat through a few shoals.

For reference, flood stage is 15.00 ft.

What happens at each level

18.00 ft
Significant and widespread flooding along the river can be expected from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
17.00 ft
Flooding will become more widespread along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
16.00 ft
Flooding impacts low lying areas along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
15.00 ft
Lowland flooding will begin along the Connecticut River near Thompsonville.
8.23 ft
Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: < 5 %.

RankLevelDate
126.60 ftMarch 20, 1936
224.40 ftJuly 23, 1938
320.93 ftAugust 19, 1955
420.80 ftMay 31, 1984
520.47 ftApril 20, 1933
620.01 ftApril 6, 1960
719.30 ftJanuary 1, 1949
818.96 ftApril 14, 1934
918.93 ftMarch 23, 1948
1018.74 ftApril 1, 1987

Weather at the gauge

Rain in the last 3 days: 0.53 in. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 57° 38° – Wind 14 mph
18 Sun 55° 34° – Wind 4 mph
19 Mon 60° 36° – Wind 8 mph
20 Tue 65° 42° – Wind 11 mph
21 Wed 58° 39° – Wind 11 mph
22 Thu 63° 36° – Wind 10 mph
23 Fri 60° 39° – Wind 10 mph

Forecast: Open-Meteo

Sunrise 07:09 AM Sunset 06:03 PM Daylight 10 hr, 54 min First quarter 68%

Map

Other gauges on the Connecticut River

Gauge Level Compared with normal 24 hours Distance
Connecticut River at Wells RiverRiver gauge, Connecticut River 2.36 ft Below flood stage −0.15 ft 152 mi
Connecticut River at West LebanonRiver gauge, Connecticut River 5.01 ft Below flood stage −0.25 ft 116 mi
Connecticut River at North WalpoleRiver gauge, Connecticut River 7.11 ft Below flood stage −1.64 ft 79 mi
Connecticut River near NorthfieldRiver gauge, Connecticut River 3,940 cfs Low −4,020.0 cfs 49 mi
Connecticut River at Montague CityRiver gauge, Connecticut River 7.45 ft Below flood stage −3.19 ft 41 mi
Connecticut River at I-391 Bridge at HolyokeRiver gauge, Connecticut River 5.77 ft Below flood stage −0.15 ft 14 mi
Connecticut River at HartfordTidal gauge, Connecticut River 2.75 ft Normal +0.18 ft 15 mi
Connecticut River at Middle HaddamTidal gauge, Connecticut River 2.69 ft Below flood stage −0.03 ft 31 mi
Connecticut River at EssexEstuary gauge, Connecticut River 2.79 ft Very high +0.55 ft 45 mi
Connecticut River at Old LymeEstuary gauge, Connecticut River 2.83 ft Very high +0.91 ft 49 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Stony Brook near West SuffieldRiver gauge, Stony Brook 4.2 cfs Normal −0.7 cfs 5.7 mi
Broad Brook at Broad BrookRiver gauge, Broad Brook 0.52 ft Low +0.01 ft 5.8 mi
Westfield River near WestfieldRiver gauge, Westfield River 3.88 ft Below flood stage −0.12 ft 10 mi
Farmington River at TariffvilleRiver gauge, Farmington River 1.53 ft Normal −0.11 ft 10 mi
Chicopee River at Indian OrchardRiver gauge, Chicopee River 4.68 ft Below flood stage +0.01 ft 13 mi
Hockanum River near East HartfordRiver gauge, Hockanum River 2.11 ft Normal −0.04 ft 14 mi
North Branch Park River at HartfordRiver gauge, North Branch Park River 1.74 ft Normal −0.02 ft 15 mi
Hubbard River near West HartlandRiver gauge, Hubbard River 25.0 cfs Normal +0.3 cfs 17 mi

Questions and answers

How does the Connecticut River at Thompsonville compare with last year?

It is 0.69 ft higher than on the same day last year, when the reading was 7.54 ft.

What is flood stage for the Connecticut River at Thompsonville?

The official flood stage is 15.00 ft. The level is currently 6.77 ft below it.

What is a normal level for the Connecticut River at Thompsonville in mid-October?

The median for mid-October is 9.09 ft. In 8 years out of 10 the reading falls between 7.97 ft and 10.48 ft, based on 32 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Connecticut River at Thompsonville today?

On Oct 20, 2026, 07:30 AM EDT, the water level was 8.23 ft. Up 0.04 ft over the last 24 hours.

Is Connecticut River at Thompsonville rising or falling?

Up 0.04 ft over the last 24 hours. Up 0.31 ft over the last 7 days.

Is the level of Connecticut River at Thompsonville normal?

Low for mid-October. Compared with 32 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:01184000 (Agency page)
Coordinates
41.98720, -72.60535 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 8.23 ft 2026-10-20 11:30 Provisional
Flow 6,860 cfs 2026-10-20 11:30 Provisional
Water temperature 55 °F 2026-10-20 11:00 Provisional

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How to cite

U.S. Geological Survey: Connecticut River at Thompsonville (usgs:01184000). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/connecticut/connecticut-river-at-thompsonville

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer