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Colebrook River Lake Water Level Today

Daily level, distance to full pool and history for Colebrook River Lake, on the West Branch Farmington River in Connecticut.

Updated · Source: US Army Corps of EngineersUSACE Provisional

Water level Provisional

654.88ft

msl · 8:30 AM CST, Nov 9, 2026

  • 55.12 ftbelow full pool (710.0 ft)
  • 16,242acre-ft in storage
  • +0.06 ftin 24 h+0.06 ft in 7 days−5.24 ft in 30 days
650660670680690700710720730650660670680690700710720730650660670680690700710720730
  • Full pool
  • 1 yr ago

Is Colebrook River Lake full?

No. Colebrook River Lake is 55.12 ft below full pool (710.0 ft). It is 10.70 ft lower than a year ago (665.58 ft on Nov 9, 2025).

Colebrook River Lake level history

View data table
DateLevel (ft)
Nov 9, 2026654.88
Nov 8, 2026654.83
Nov 7, 2026654.79
Nov 6, 2026654.75
Nov 5, 2026654.72
Nov 4, 2026654.73
Nov 3, 2026654.76
Nov 2, 2026654.82
Nov 1, 2026655.03
Oct 31, 2026655.28
Oct 30, 2026655.51
Oct 29, 2026655.74
Oct 28, 2026655.99
Oct 27, 2026656.22
Oct 26, 2026656.63
Oct 25, 2026656.85
Oct 24, 2026656.99
Oct 23, 2026657.31
Oct 22, 2026657.72
Oct 21, 2026658.13
Oct 20, 2026658.52
Oct 19, 2026658.86
Oct 18, 2026658.96
Oct 17, 2026658.90
Oct 16, 2026658.99
Oct 15, 2026659.30
Oct 14, 2026659.58
Oct 13, 2026659.73
Oct 12, 2026659.71
Oct 11, 2026659.62
Oct 10, 2026660.12
  • Colebrook River Lake level
  • Full pool 710.0 ft
  • Above full pool
Source: USACE · Daily averages since 1969

Colebrook River Lake on Nov 9 in past years

Colebrook River Lake water level on Nov 9 in past years
YearLevel (ft)vs todayvs full pool
2026today654.88—−55.12 ft
2025665.58+10.70−44.42 ft
2024657.12+2.24−52.88 ft
2023707.37+52.49−2.63 ft
2022692.29+37.41−17.71 ft
2021700.41+45.53−9.59 ft
2020652.19−2.69−57.81 ft
2019677.18+22.30−32.82 ft
2018713.15+58.27+3.15 ft
2017659.48+4.60−50.52 ft
2016638.67−16.21−71.33 ft

Today’s level is the lowest for this date since 2020.

Lake facts

Full pool (conservation pool)
710.0 ft msl
Top of flood pool
761.0 ft msl
Record high
757.50 ftJun 4, 1984
Record low
610.00 ftDec 1, 1978
Data since
Apr 1, 1969
Dam
Colebrook River Damcompleted 1969
River
West Branch Farmington River
Operated by
US Army Corps of Engineers, New England District
Dam location
Litchfield County
Gauge location
42.0064, −73.0364

Dam, river and owner from the National Inventory of Dams (USACE). Records cover Apr 1, 1969 to today (daily averages).

Colebrook River Lake map and depth

  • Dam and level gauge
Shoreline © OpenStreetMap contributors · Open the full map
Average depth when full
about 66 ftcapacity ÷ surface area
Surface area
about 750 acresmeasured on the OpenStreetMap outline
Height of Colebrook River Dam
223 ftNational Inventory of Dams

The outline shows the mapped shoreline, not today’s water line: when the lake is low, the water stands back from it.

Weather on the lake

  1. Today51°FHighLow 36°FNW 9–14 mphChance Rain Showers
  2. Tonight36°FLowNW 5–13 mphMostly Cloudy
  3. Tuesday55°FHighLow 38°FW 3–8 mphPartly Sunny
  4. Wednesday55°FHighLow 35°FNW 2–7 mphMostly Sunny
  5. Thursday53°FHighLow 35°FNE 1–5 mphMostly Cloudy then Chance Light Rain
  6. Friday45°FHighLow 30°FNE 12 mphLight Rain Likely
  7. Saturday44°FHighLow 29°FN 12 mphChance Light Rain

Forecast: National Weather Service for the dam area (42.01, −73.04). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

What is the full pool level of Colebrook River Lake?
710.0 ft above mean sea level, the top of its conservation pool. Above it, water is held in the flood pool (up to 761.0 ft) and released through Colebrook River Dam when conditions downstream allow.
How much does Colebrook River Lake need to be full?
Colebrook River Lake needs 55.12 ft more water to reach full pool (710.0 ft), as of Nov 9, 2026.
How deep is Colebrook River Lake?
Colebrook River Lake is about 66 ft deep on average when full: 49,000 acre-ft of storage spread over about 750 acres of surface. As in most reservoirs, the deepest water is in the old river channel near Colebrook River Dam.
Is Colebrook River Lake rising or falling?
It is rising: +0.06 ft in the last 7 days and +0.06 ft in 24 hours, to 654.88 ft on 8:30 AM CST, Nov 9, 2026 (US Army Corps of Engineers).
When was Colebrook River Lake last full?
It was last at or above full pool (710.0 ft) on May 20, 2026. On Nov 9, 2026 it was 55.12 ft below.
What was the highest level ever recorded?
Colebrook River Lake reached 757.50 ft on Jun 4, 1984. The lowest was 610.00 ft on Dec 1, 1978 (USACE data since 1969).
How much has Colebrook River Lake changed in the last year?
In the last 12 months it ranged from 654.72 ft (Nov 5, 2026) to 712.07 ft (Apr 20, 2026), a swing of 57.35 ft.
How often is this page updated?
This page is updated several times a day with the latest reading from US Army Corps of Engineers. The last reading is from 8:30 AM CST, Nov 9, 2026.

Where this data comes from

Hourly pool elevation from the US Army Corps of Engineers (water.usace.army.mil). Recent readings are provisional and may be revised. Weather from the National Weather Service. Dam details from the National Inventory of Dams.

Lake Levels Daily is an independent site, not affiliated with TWDB, LCRA, USACE, USGS, NOAA, TVA or any lake operator. Check official sources before making safety decisions.