Lake levels › Connecticut

Thomaston Lake water level today

Normal for this time of year

381.08ft

feet above sea level ·

vs normal for Oct 10−0.2 ft
24 hours−0.05 ft
7 days−0.4 ft
30 days+0.1 ft
vs a year ago−4.0 ft

Is Thomaston Lake low right now?

Thomaston Lake was at 381.08 ft on October 10, 2026. That is 0.23 ft below the typical level for October 10, within the normal range. Over the past week the lake has been falling about 0.05 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)
378388399410421NovDecJanFebMarAprMayJunJulAugSepOct

Thomaston Lake on Oct 10 in past years

2025385.1−4.0
2024381.4−0.3
2023393.9−12.8
2022381.4−0.4
2021385.1−4.0
2020380.6+0.5

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Change
Oct 10381.11−0.02
Oct 9381.13−0.03
Oct 8381.16−0.04
Oct 7381.20−0.01
Oct 6381.21−0.09
Oct 5381.30−0.04
Oct 4381.34−0.11
Oct 3381.45−0.22
Oct 2381.67−0.26
Oct 1381.93−0.85
Sep 30382.78−7.31
Sep 29390.09−0.83
Sep 28390.92+8.68
Sep 27382.24+0.97

Daily means of the operator's readings (midnight to midnight, local time).

About Thomaston Lake

10-year range
380.6 ft (October 2, 2016) to 445.1 ft (September 3, 2021)
Operated by
U.S. Army Corps of Engineers
Data
U.S. Army Corps of Engineers — NAE district, TMD

Lakes near Thomaston Lake

Questions

Is Thomaston Lake low right now?

Thomaston Lake was at 381.08 ft on October 10, 2026. That is 0.23 ft below the typical level for October 10, within the normal range. Over the past week the lake has been falling about 0.05 ft a day.

How often is the Thomaston Lake level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Army Corps of Engineers (NAE district, TMD). Readings are provisional and can be revised.