Country: Canada
United StatesCanadaUnited Kingdom

Lac Champlain water level history

Daily records since 1964 · Level today: 4.154 m

Highest on record
7.003 m
May 6, 2011
Lowest on record
3.962 m
Oct 16, 2025
Today
4.154 m
Oct 23, 2026
Years of data
62
since 1964

In short

Across 60 complete years, 1965 had the lowest average level (4.395 m) and 2011 the highest (5.385 m).

On average the lake is lowest in October (4.541 m) and highest in May (5.515 m).

Lac Champlain level, all years

Loading chart…

Measured Normal range for the date (middle 50% of past years)

Each year's lowest and highest level

3.84.65.56.37.21964197219801988199620042012202020261964: lowest 3.97 m (1964-11-24), highest 4.18 m (1964-12-30), average 4.06 m, 45 days measured1965: lowest 4.09 m (1965-07-31), highest 4.93 m (1965-12-01), average 4.39 m, 365 days measured1966: lowest 4.17 m (1966-11-02), highest 5.40 m (1966-04-21), average 4.65 m, 365 days measured1967: lowest 4.25 m (1967-01-24), highest 5.46 m (1967-04-22), average 4.67 m, 365 days measured1968: lowest 4.13 m (1968-11-12), highest 5.72 m (1968-04-08), average 4.72 m, 366 days measured1969: lowest 4.32 m (1969-10-22), highest 6.29 m (1969-05-01), average 4.97 m, 365 days measured1970: lowest 4.32 m (1970-09-15), highest 6.23 m (1970-05-01), average 4.81 m, 365 days measured1971: lowest 4.31 m (1971-11-22), highest 6.40 m (1971-05-12), average 4.90 m, 365 days measured1972: lowest 4.39 m (1972-10-29), highest 6.47 m (1972-05-11), average 5.04 m, 366 days measured1973: lowest 4.41 m (1973-11-15), highest 6.12 m (1973-04-06), average 5.22 m, 365 days measured1974: lowest 4.32 m (1974-11-21), highest 6.02 m (1974-05-01), average 5.06 m, 365 days measured1975: lowest 4.33 m (1975-08-30), highest 5.69 m (1975-05-02), average 4.85 m, 365 days measured1976: lowest 4.71 m (1976-12-31), highest 6.51 m (1976-04-05), average 5.30 m, 366 days measured1977: lowest 4.36 m (1977-08-15), highest 6.03 m (1977-04-06), average 5.01 m, 365 days measured1978: lowest 4.11 m (1978-12-07), highest 6.20 m (1978-04-30), average 4.89 m, 365 days measured1979: lowest 4.20 m (1979-01-01), highest 6.02 m (1979-04-06), average 4.90 m, 365 days measured1980: lowest 4.19 m (1980-03-13), highest 5.21 m (1980-04-20), average 4.57 m, 366 days measured1981: lowest 4.43 m (1981-02-01), highest 5.69 m (1981-03-02), average 4.98 m, 365 days measured1982: lowest 4.20 m (1982-11-02), highest 6.08 m (1982-04-26), average 4.79 m, 365 days measured1983: lowest 4.26 m (1983-11-04), highest 6.46 m (1983-05-08), average 5.02 m, 365 days measured1984: lowest 4.27 m (1984-11-07), highest 5.93 m (1984-06-09), average 5.03 m, 366 days measured1985: lowest 4.31 m (1985-08-31), highest 5.43 m (1985-04-24), average 4.78 m, 365 days measured1986: lowest 4.45 m (1986-01-19), highest 6.11 m (1986-04-06), average 4.92 m, 365 days measured1987: lowest 4.29 m (1987-09-08), highest 5.77 m (1987-04-10), average 4.73 m, 365 days measured1988: lowest 4.15 m (1988-10-22), highest 5.34 m (1988-05-10), average 4.63 m, 366 days measured1989: lowest 4.28 m (1989-02-21), highest 5.63 m (1989-05-15), average 4.84 m, 365 days measured1990: lowest 4.58 m (1990-01-16), highest 5.78 m (1990-03-25), average 5.14 m, 147 days measured1991: lowest 4.14 m (1991-09-13), highest 5.72 m (1991-01-01), average 4.81 m, 365 days measured1992: lowest 4.29 m (1992-10-05), highest 5.68 m (1992-05-03), average 4.71 m, 366 days measured1993: lowest 4.36 m (1993-11-01), highest 6.56 m (1993-05-02), average 4.85 m, 365 days measured1994: lowest 4.29 m (1994-11-27), highest 6.46 m (1994-04-29), average 4.89 m, 365 days measured1995: lowest 4.17 m (1995-10-05), highest 5.28 m (1995-11-23), average 4.66 m, 365 days measured1996: lowest 4.27 m (1996-10-20), highest 6.31 m (1996-05-16), average 5.15 m, 366 days measured1997: lowest 4.38 m (1997-10-26), highest 5.75 m (1997-05-06), average 4.93 m, 365 days measured1998: lowest 4.42 m (1998-12-31), highest 6.46 m (1998-04-06), average 5.20 m, 365 days measured1999: lowest 4.09 m (1999-09-17), highest 5.52 m (1999-04-07), average 4.70 m, 365 days measured2000: lowest 4.18 m (2000-10-30), highest 6.34 m (2000-05-14), average 4.97 m, 366 days measured2001: lowest 4.01 m (2001-11-28), highest 6.31 m (2001-04-27), average 4.68 m, 365 days measured2002: lowest 4.07 m (2002-01-07), highest 5.69 m (2002-06-17), average 4.75 m, 347 days measured2003: lowest 4.31 m (2003-03-16), highest 5.86 m (2003-12-29), average 4.96 m, 365 days measured2004: lowest 4.39 m (2004-11-20), highest 5.87 m (2004-01-03), average 5.07 m, 366 days measured2005: lowest 4.48 m (2005-10-08), highest 5.89 m (2005-05-02), average 5.12 m, 365 days measured2006: lowest 4.61 m (2006-10-17), highest 5.89 m (2006-07-02), average 5.32 m, 365 days measured2007: lowest 4.39 m (2007-10-07), highest 6.22 m (2007-04-30), average 5.04 m, 365 days measured2008: lowest 4.48 m (2008-10-22), highest 6.25 m (2008-04-23), average 5.22 m, 354 days measured2009: lowest 4.52 m (2009-10-23), highest 5.68 m (2009-04-09), average 5.01 m, 354 days measured2010: lowest 4.45 m (2010-09-26), highest 5.78 m (2010-04-10), average 5.06 m, 364 days measured2011: lowest 4.52 m (2011-08-28), highest 7.00 m (2011-05-06), average 5.39 m, 365 days measured2012: lowest 4.20 m (2012-09-02), highest 5.17 m (2012-05-25), average 4.68 m, 364 days measured2013: lowest 4.37 m (2013-10-29), highest 5.93 m (2013-07-10), average 4.92 m, 365 days measured2014: lowest 4.18 m (2014-10-23), highest 6.19 m (2014-04-21), average 4.86 m, 365 days measured2015: lowest 4.31 m (2015-10-27), highest 5.61 m (2015-07-02), average 4.79 m, 365 days measured2016: lowest 3.98 m (2016-10-20), highest 5.49 m (2016-03-31), average 4.64 m, 366 days measured2017: lowest 4.27 m (2017-10-25), highest 6.04 m (2017-04-19), average 4.91 m, 365 days measured2018: lowest 4.11 m (2018-09-24), highest 6.04 m (2018-05-05), average 4.81 m, 365 days measured2019: lowest 4.22 m (2019-09-30), highest 6.29 m (2019-04-29), average 5.14 m, 365 days measured2020: lowest 4.08 m (2020-09-25), highest 5.62 m (2020-04-15), average 4.71 m, 366 days measured2021: lowest 4.22 m (2021-10-14), highest 5.26 m (2021-05-11), average 4.61 m, 365 days measured2022: lowest 4.22 m (2022-09-06), highest 5.90 m (2022-04-21), average 4.79 m, 365 days measured2023: lowest 4.75 m (2023-06-25), highest 5.86 m (2023-12-23), average 5.20 m, 365 days measured2024: lowest 4.17 m (2024-11-22), highest 5.83 m (2024-04-19), average 5.00 m, 366 days measured2025: lowest 3.96 m (2025-10-16), highest 5.72 m (2025-05-21), average 4.71 m, 365 days measured2026: lowest 4.08 m (2026-10-10), highest 4.24 m (2026-10-18), average 4.15 m, 30 days measured
3.84.65.56.37.2196419801996201220261964: lowest 3.97 m (1964-11-24), highest 4.18 m (1964-12-30), average 4.06 m, 45 days measured1965: lowest 4.09 m (1965-07-31), highest 4.93 m (1965-12-01), average 4.39 m, 365 days measured1966: lowest 4.17 m (1966-11-02), highest 5.40 m (1966-04-21), average 4.65 m, 365 days measured1967: lowest 4.25 m (1967-01-24), highest 5.46 m (1967-04-22), average 4.67 m, 365 days measured1968: lowest 4.13 m (1968-11-12), highest 5.72 m (1968-04-08), average 4.72 m, 366 days measured1969: lowest 4.32 m (1969-10-22), highest 6.29 m (1969-05-01), average 4.97 m, 365 days measured1970: lowest 4.32 m (1970-09-15), highest 6.23 m (1970-05-01), average 4.81 m, 365 days measured1971: lowest 4.31 m (1971-11-22), highest 6.40 m (1971-05-12), average 4.90 m, 365 days measured1972: lowest 4.39 m (1972-10-29), highest 6.47 m (1972-05-11), average 5.04 m, 366 days measured1973: lowest 4.41 m (1973-11-15), highest 6.12 m (1973-04-06), average 5.22 m, 365 days measured1974: lowest 4.32 m (1974-11-21), highest 6.02 m (1974-05-01), average 5.06 m, 365 days measured1975: lowest 4.33 m (1975-08-30), highest 5.69 m (1975-05-02), average 4.85 m, 365 days measured1976: lowest 4.71 m (1976-12-31), highest 6.51 m (1976-04-05), average 5.30 m, 366 days measured1977: lowest 4.36 m (1977-08-15), highest 6.03 m (1977-04-06), average 5.01 m, 365 days measured1978: lowest 4.11 m (1978-12-07), highest 6.20 m (1978-04-30), average 4.89 m, 365 days measured1979: lowest 4.20 m (1979-01-01), highest 6.02 m (1979-04-06), average 4.90 m, 365 days measured1980: lowest 4.19 m (1980-03-13), highest 5.21 m (1980-04-20), average 4.57 m, 366 days measured1981: lowest 4.43 m (1981-02-01), highest 5.69 m (1981-03-02), average 4.98 m, 365 days measured1982: lowest 4.20 m (1982-11-02), highest 6.08 m (1982-04-26), average 4.79 m, 365 days measured1983: lowest 4.26 m (1983-11-04), highest 6.46 m (1983-05-08), average 5.02 m, 365 days measured1984: lowest 4.27 m (1984-11-07), highest 5.93 m (1984-06-09), average 5.03 m, 366 days measured1985: lowest 4.31 m (1985-08-31), highest 5.43 m (1985-04-24), average 4.78 m, 365 days measured1986: lowest 4.45 m (1986-01-19), highest 6.11 m (1986-04-06), average 4.92 m, 365 days measured1987: lowest 4.29 m (1987-09-08), highest 5.77 m (1987-04-10), average 4.73 m, 365 days measured1988: lowest 4.15 m (1988-10-22), highest 5.34 m (1988-05-10), average 4.63 m, 366 days measured1989: lowest 4.28 m (1989-02-21), highest 5.63 m (1989-05-15), average 4.84 m, 365 days measured1990: lowest 4.58 m (1990-01-16), highest 5.78 m (1990-03-25), average 5.14 m, 147 days measured1991: lowest 4.14 m (1991-09-13), highest 5.72 m (1991-01-01), average 4.81 m, 365 days measured1992: lowest 4.29 m (1992-10-05), highest 5.68 m (1992-05-03), average 4.71 m, 366 days measured1993: lowest 4.36 m (1993-11-01), highest 6.56 m (1993-05-02), average 4.85 m, 365 days measured1994: lowest 4.29 m (1994-11-27), highest 6.46 m (1994-04-29), average 4.89 m, 365 days measured1995: lowest 4.17 m (1995-10-05), highest 5.28 m (1995-11-23), average 4.66 m, 365 days measured1996: lowest 4.27 m (1996-10-20), highest 6.31 m (1996-05-16), average 5.15 m, 366 days measured1997: lowest 4.38 m (1997-10-26), highest 5.75 m (1997-05-06), average 4.93 m, 365 days measured1998: lowest 4.42 m (1998-12-31), highest 6.46 m (1998-04-06), average 5.20 m, 365 days measured1999: lowest 4.09 m (1999-09-17), highest 5.52 m (1999-04-07), average 4.70 m, 365 days measured2000: lowest 4.18 m (2000-10-30), highest 6.34 m (2000-05-14), average 4.97 m, 366 days measured2001: lowest 4.01 m (2001-11-28), highest 6.31 m (2001-04-27), average 4.68 m, 365 days measured2002: lowest 4.07 m (2002-01-07), highest 5.69 m (2002-06-17), average 4.75 m, 347 days measured2003: lowest 4.31 m (2003-03-16), highest 5.86 m (2003-12-29), average 4.96 m, 365 days measured2004: lowest 4.39 m (2004-11-20), highest 5.87 m (2004-01-03), average 5.07 m, 366 days measured2005: lowest 4.48 m (2005-10-08), highest 5.89 m (2005-05-02), average 5.12 m, 365 days measured2006: lowest 4.61 m (2006-10-17), highest 5.89 m (2006-07-02), average 5.32 m, 365 days measured2007: lowest 4.39 m (2007-10-07), highest 6.22 m (2007-04-30), average 5.04 m, 365 days measured2008: lowest 4.48 m (2008-10-22), highest 6.25 m (2008-04-23), average 5.22 m, 354 days measured2009: lowest 4.52 m (2009-10-23), highest 5.68 m (2009-04-09), average 5.01 m, 354 days measured2010: lowest 4.45 m (2010-09-26), highest 5.78 m (2010-04-10), average 5.06 m, 364 days measured2011: lowest 4.52 m (2011-08-28), highest 7.00 m (2011-05-06), average 5.39 m, 365 days measured2012: lowest 4.20 m (2012-09-02), highest 5.17 m (2012-05-25), average 4.68 m, 364 days measured2013: lowest 4.37 m (2013-10-29), highest 5.93 m (2013-07-10), average 4.92 m, 365 days measured2014: lowest 4.18 m (2014-10-23), highest 6.19 m (2014-04-21), average 4.86 m, 365 days measured2015: lowest 4.31 m (2015-10-27), highest 5.61 m (2015-07-02), average 4.79 m, 365 days measured2016: lowest 3.98 m (2016-10-20), highest 5.49 m (2016-03-31), average 4.64 m, 366 days measured2017: lowest 4.27 m (2017-10-25), highest 6.04 m (2017-04-19), average 4.91 m, 365 days measured2018: lowest 4.11 m (2018-09-24), highest 6.04 m (2018-05-05), average 4.81 m, 365 days measured2019: lowest 4.22 m (2019-09-30), highest 6.29 m (2019-04-29), average 5.14 m, 365 days measured2020: lowest 4.08 m (2020-09-25), highest 5.62 m (2020-04-15), average 4.71 m, 366 days measured2021: lowest 4.22 m (2021-10-14), highest 5.26 m (2021-05-11), average 4.61 m, 365 days measured2022: lowest 4.22 m (2022-09-06), highest 5.90 m (2022-04-21), average 4.79 m, 365 days measured2023: lowest 4.75 m (2023-06-25), highest 5.86 m (2023-12-23), average 5.20 m, 365 days measured2024: lowest 4.17 m (2024-11-22), highest 5.83 m (2024-04-19), average 5.00 m, 366 days measured2025: lowest 3.96 m (2025-10-16), highest 5.72 m (2025-05-21), average 4.71 m, 365 days measured2026: lowest 4.08 m (2026-10-10), highest 4.24 m (2026-10-18), average 4.15 m, 30 days measured
Lowest to highest that yearYear average2026 so far

One bar per year from the lowest to the highest daily level, with the year's average. Years with no bar have no daily record in the agency archive.

Lowest years

Years ranked by their lowest daily level.

  • 20253.962 m on Oct 16
  • 20163.985 m on Oct 20
  • 20014.010 m on Nov 28
  • 20024.072 m on Jan 7
  • 20204.082 m on Sep 25

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)4.1524.078Oct 104.243Oct 18
20254.7123.962Oct 165.723May 21
20245.0054.173Nov 225.830Apr 19
20235.2054.749Jun 255.858Dec 23
20224.7894.225Sep 65.898Apr 21
20214.6074.225Oct 145.256May 11
20204.7124.082Sep 255.625Apr 15
20195.1444.223Sep 306.294Apr 29
20184.8144.112Sep 246.039May 5
20174.9074.267Oct 256.035Apr 19
20164.6433.985Oct 205.488Mar 31
20154.7924.312Oct 275.608Jul 2
20144.8644.185Oct 236.189Apr 21
20134.9184.365Oct 295.932Jul 10
20124.6764.203Sep 25.175May 25
20115.3854.521Aug 287.003May 6
20105.0614.449Sep 265.776Apr 10
20095.0114.519Oct 235.681Apr 9
20085.2224.480Oct 226.247Apr 23
20075.0384.389Oct 76.224Apr 30
20065.3164.608Oct 175.891Jul 2
20055.1184.475Oct 85.890May 2
20045.0654.385Nov 205.874Jan 3
20034.9554.309Mar 165.862Dec 29
20024.7544.072Jan 75.686Jun 17
20014.6854.010Nov 286.310Apr 27
20004.9674.183Oct 306.340May 14
19994.6974.086Sep 175.522Apr 7
19985.1964.417Dec 316.457Apr 6
19974.9324.378Oct 265.751May 6
19965.1524.268Oct 206.308May 16
19954.6584.167Oct 55.276Nov 23
19944.8924.290Nov 276.460Apr 29
19934.8494.361Nov 16.564May 2
19924.7074.290Oct 55.684May 3
19914.8094.140Sep 135.717Jan 1
1990 (147 days)5.1354.584Jan 165.776Mar 25
19894.8384.279Feb 215.633May 15
19884.6294.150Oct 225.343May 10
19874.7264.294Sep 85.768Apr 10
19864.9194.452Jan 196.110Apr 6
19854.7814.312Aug 315.427Apr 24
19845.0254.271Nov 75.931Jun 9
19835.0254.259Nov 46.458May 8
19824.7864.196Nov 26.077Apr 26
19814.9764.427Feb 15.692Mar 2
19804.5704.191Mar 135.207Apr 20
19794.8954.203Jan 16.023Apr 6
19784.8934.112Dec 76.197Apr 30
19775.0124.362Aug 156.032Apr 6
19765.2964.706Dec 316.514Apr 5
19754.8504.328Aug 305.691May 2
19745.0584.322Nov 216.017May 1
19735.2194.407Nov 156.123Apr 6
19725.0424.389Oct 296.474May 11
19714.9054.307Nov 226.395May 12
19704.8114.316Sep 156.227May 1
19694.9684.322Oct 226.291May 1
19684.7214.127Nov 125.721Apr 8
19674.6724.246Jan 245.459Apr 22
19664.6524.173Nov 25.398Apr 21
19654.3954.093Jul 314.932Dec 1
1964 (45 days)4.0573.968Nov 244.182Dec 30

Levels in metres. Partial years show the number of days with data.

Monthly averages

MonthAverageLowestHighest
January4.8184.0725.876
February4.7684.1455.890
March4.9244.1916.203
April5.5044.2006.860
May5.5154.4657.003
June5.1324.2856.899
July4.8674.0935.932
August4.6984.1125.642
September4.5604.0035.585
October4.5413.9625.706
November4.6763.9685.780
December4.7794.0116.009

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Daily levels as CSV (22,093 rows; credit the original agencies listed below)